Last Updated: 2021/10/29

燃料電池技術 (JP Patent Analysis Report)

The Theme Code "燃料電池技術" had 312 patent application filings in the most recent period (2020-01-01 to 2020-03-31). This is a significantly decreased of -98 filings (-23.9%) over 410 they had in the same period of the previous year (2019-01-01 to 2019-03-31).

The company had their highest number of filings in 2012 with 2,027 cases, and their lowest number in 2019 with 1,215 cases.

The mean of the number of filings over the last 5 years (2015 to 2019, 7,842 cases in total) is 1,568, and the median is 1,605. The coefficient of variation (standard deviation/mean) is 0.13, and there have been small fluctuations in the number of filings from year to year.

Filing information for the last 5 years (2015 to 2019)
Index Value
Average 1,568 patents
Std Dev 198
COV 0.13

The number of filings has been decreasing for the last 3 years (2017 to 2019).

Filing trends for the last 3 years
Year Cases YOY
2019 year 1,215 cases -19.96 %
2018 year 1,518 cases -12.36 %
2017 year 1,732 cases -2.26 %

This report provides the latest patent analysis information (the IP landscape, including a patent map) on the patent search results of the JP patent database for 燃料電池技術[5H126] for the period of the last 10 years (2011-01-01 to 2021-11-30). You can compare the information in this report with the trends in your competitors’ patent filings and technologies, and use it to search for important patents.

This service provides, free of charge, a patent analysis report based on the latest patent data (Japanese, U.S., European, and PCT application publications) for use in patent searches, patent analysis, and IP landscaping. The service is offered by "Patent Integration" a firm specializing in patent search/patent analysis.

This report includes basic information to help you understand the IP strategy and management of 燃料電池技術, such as changes in the number of patents/patent applications they have filed, comparisons of the numbers of patents/patent applications filed by their peers and competitors, their top coapplicants (joint research partners, alliance partners), and their most important patents. It can be used in various intellectual property business operations such as IP landscaping, patent search/patent analysis, preparation of intellectual property business evaluation reports, selection of M&A candidates, and selection of alliance partners.

Article supervision: Patent attorney Yoshiyuki Ose
Article supervised by: Yoshiyuki Ose (Japanese Patent Attorney)      

After studying physics at the University of Tokyo as a doctoral student, he was engaged in intellectual property analysis and technology trend research as an in-house patent attorney at a precision equipment manufacturer and at Toyota Central R&D Labs. Inc.. He is currently a patent attorney at IPTech Patent Professional Corporation, one of Japan's leading patent firms specializing in IT and startups.

He specializes in invention counseling, patent filing, and intellectual property strategies for start-up companies and new businesses in the fields of software, information technology and artificial intelligence. He runs a patent course for beginners on Udemy, an online course provider. Please feel free to contact him via Twitter DM, LinkedIn, or IPTech Patent Professional Corporation.

Introduction

The concept of the "IP landscape" (IPL) has been attracting attention recently.

An IP landscape is not limited to patent information, but also integrates and analyzes business information (e.g., non-patent information such as papers, news releases, stock information, and market information). Intellectual-property-based business management is realized through the analysis of intellectual property information applied to the formulation of management strategies and business strategies. This is a comprehensive approach that includes but not limited to planning of open and closed strategies, selecting M&A candidates, searching for alliance partners, and formulating intellectual property strategies, through the exploitation of intellectual property information.

IP landscaping usually includes patent search and patent analysis. In patent search and patent analysis, it is important to grasp the market position of each company and the overall technological trends and development trends for each technology. More specifically, it is important to understand what intellectual property your own company and other companies hold, what the strengths and weaknesses of other companies are, and how other companies are trying to exploit their intellectual property. In other words, it is important to understand both the business strategy and the intellectual property strategy of each company.

After reading this search report, you may be interested in more detailed patent searches and patent analysis. We offer a service called Patent Integration, which is an integrated patent search and patent analysis service. With reasonable pricing and a simple user interface such that even beginners can quickly search for and analyze patent information by company or technology from a web browser, please consider using it for detailed patent searches, patent analysis, and IP landscaping.

Patent Integration has a patent-landscaping function that can visually represent a set of tens of thousands of patents/patent applications. This allows you to convincingly show the technical positions of your company and its competitors to your management and business strategists in order to formulate management strategies and business strategies.

Foreign Patent Analysis Report

The following foreign patent analysis reports have been found for 燃料電池技術. The trends of patent filings of 燃料電池技術 for each country can be found by clicking on the Applicant/Patent Holder name next to each country.

Patent Filing Trends in Each Country
Country Applicant / Patent Holder

燃料電池技術, Changes in the Number of JP Patents/Patent Applications

The changes in the number of patent filings of 燃料電池技術 over the last 20 years (JP) are shown below.

The change in the number of patents/patent applications is the most basic index in patent analysis. By examining the change in the number of patents/patent applications, you can see the status of technological development and R&D focus for each company or technology. It should be noted that since there is a one and a half year lag between the filing and the laying open of patent applications, it is not possible to analyze the situation more recently than one and half years prior to the present.

In this report, you can only see the change in the number of patents/patent applications by company or technology, whereas Patent Integration allows you to quickly compare the number of patent applications with your competitors in each technical field by cross-referencing with other keywords and patent classifications.

Counting of the Number of Cases using the Patent Mapping Function

By examining the change in the number of patents/patent applications, you can see the status of technological development and R&D focus for each company or technology.

You can select a graph type from the menu on the upper left. Data can be output as a file to the clipboard, or in CSV format or TSV format. You can also output graph images as files in the SVG, PNG, and JPG formats. For the terms of use when using the data, please see "About this Site."

Patent Landscape ({{ld.d.db_name | country_map: 'en'}})

Patent landscaping is a visualization of the distribution of patent filings (application focus areas) for each technical keyword. Mountains and islands indicated by heatmap contours represent clusters of patent applications filed, and red areas on the heatmap indicate many patent filings relating to the keyword.

The patent landscape for 燃料電池技術 gives an intuitive understanding of what patent filings they have made and what technical position is to be established. By selecting filing year checkboxes and filtering, you can track their past filing trends (what technical area they have focused on).

By selecting applicant/patent holder checkboxes and filtering, you can visually grasp the technical areas of the filings for each applicant and the partnerships or alliances formed. Please use it as a guide for patent analysis and IP landscaping.

In addition, by visually representing the patent data in this manner, you can convincingly show the technical positions of your company and its competitors to your management and business strategists in order to formulate management strategies and business strategies.

In Patent Integration, you can check the specifics of a patent filing by clicking anywhere on the patent landscape screen. You can also quickly check the position of each applicant for each technical field by cross-referencing with other keywords and patent classifications. You can use it as a guide when considering hypotheses about each company's IP strategy on the IP Landscape. You can also use it for higher-grade intellectual property activities. It has reasonable pricing and a simple user interface that is easy for beginners to handle.

Visualization of Technical Position

The patent landscape allows you to analyze, without any hassle, what patent applications have been filed and what technical position is to be established.

Characteristic Terms (Importance)

The following is a list of words (characteristic terms) often used in 燃料電池技術 patent applications. Characteristic terms with a higher importance are used in more patents/patent applications.

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Search Set (Analysis Object)

This patent analysis report was created for a patent search set of 15,846 cases retrieved by applying the following search formula and analysis period to the following patent database. Patent information such as a patent analysis result, a patent map, and a patent landscape can be freely used for patent searches, analysis, and work on intellectual property strategies, including IP landscaping.

Patent Database
JP Publications/Granted Patents
Patent Search Formula
Theme Code:
燃料電池技術[5H126]
Patent Analysis Period
2011-01-01〜2021-11-30
Number of Objects
15,846 patents

Analysis results are determined on the basis of patent gazette data issued by the patent office in each country.

Top company information (JP)

The patent information of the higher applicant in the technical theme 燃料電池技術 is shown below. By comparing the number of patents of each company, you can check the research and development status of each company's past and present technical themes and the position of each company in the technical theme.

Search for Coapplicants

Patent integration allows you to find coapplicants in a short amount of time.

Trends in filing of joint patent applications in the last 3 years (2019 to 2021).

among the top coapplicants, トヨタ自動車株式会社 has the highest number of joint applications in the last in the last 3 years (2019 to 2021) with 369 cases, followed by 本田技研工業株式会社 with 136 cases.

Trends in filing of joint patent applications in the last 3 years (2019 to 2021).
Name Cases
トヨタ自動車株式会社 369 cases
本田技研工業株式会社 136 cases
京セラ株式会社 42 cases
日産自動車株式会社 28 cases
株式会社東芝 20 cases
三菱重工業株式会社 11 cases

Trends in filing of joint patent applications for the target period (2011 to 2021).

among the top coapplicants, トヨタ自動車株式会社 has the highest number of joint applications in the last for the target period (2011 to 2021) with 2,504 cases, followed by 本田技研工業株式会社 with 1,284 cases.

Trends in filing of joint patent applications for the target period (2011 to 2021).
Name Cases
トヨタ自動車株式会社 2,504 cases
本田技研工業株式会社 1,284 cases
日産自動車株式会社 677 cases
京セラ株式会社 492 cases
パナソニック株式会社 302 cases
株式会社東芝 150 cases
三菱重工業株式会社 47 cases

Top company, Change in the Number of JP Patents

Below is a patent map showing the changes in the numbers of JP patent filings by 燃料電池技術’s top 7 coapplicants over the last 20 years.

You can select a graph type from the menu on the upper left. Data can be output as a file to the clipboard, or in CSV format or TSV format. You can also output graph images as files in the SVG, PNG, and JPG formats. For the terms of use when using the data, please see "About this Site."

Top company Details (JP)

Trends in filing of joint patent applications with トヨタ自動車株式会社

燃料電池技術 filed 2,504 joint applications with トヨタ自動車株式会社 for the analysis period (2011 to 2021).

The mean of the number of filings over the last 5 years (2015 to 2019, 1,460 cases in total) is 292, and the median is 284. The coefficient of variation (standard deviation/mean) is 0.24, and there have been small fluctuations in the number of filings from year to year.

The company had their highest number of filings in 2018 with 372 cases, and their lowest number in 2013 with 164 cases.

Filing information for the last 5 years (2015 to 2019)
Index Value
Average 292 patents
Std Dev 70.3
COV 0.24
Filing trends for the last 3 years
Year Cases YOY
2019 year 277 cases -25.54 %
2018 year 372 cases +5.08 %
2017 year 354 cases +24.65 %

Trends in filing of joint patent applications with 本田技研工業株式会社

燃料電池技術 filed 1,284 joint applications with 本田技研工業株式会社 for the analysis period (2011 to 2021).

The mean of the number of filings over the last 5 years (2015 to 2019, 452 cases in total) is 90.4, and the median is 97.0. The coefficient of variation (standard deviation/mean) is 0.20, and there have been small fluctuations in the number of filings from year to year.

The number of filings has been increasing for the last 3 years (2017 to 2019). The company had their highest number of filings in 2012 with 249 cases, and their lowest number in 2017 with 59 cases.

Filing information for the last 5 years (2015 to 2019)
Index Value
Average 90.4 patents
Std Dev 18.4
COV 0.20
Filing trends for the last 3 years
Year Cases YOY
2019 year 97 cases +18.29 %
2018 year 82 cases +39.0 %
2017 year 59 cases -47.3 %

Trends in filing of joint patent applications with 日産自動車株式会社

燃料電池技術 filed 677 joint applications with 日産自動車株式会社 for the analysis period (2011 to 2021).

The mean of the number of filings over the last 5 years (2015 to 2019, 277 cases in total) is 55.4, and the median is 62.0. The coefficient of variation (standard deviation/mean) is 0.4, and there have been big fluctuations in the number of filings from year to year.

The number of filings has been decreasing for the last 3 years (2017 to 2019). The company had their highest number of filings in 2013 with 129 cases, and their lowest number in 2019 with 26 cases.

Filing information for the last 5 years (2015 to 2019)
Index Value
Average 55.4 patents
Std Dev 20.5
COV 0.4
Filing trends for the last 3 years
Year Cases YOY
2019 year 26 cases -31.6 %
2018 year 38 cases -38.7 %
2017 year 62 cases -10.14 %

Trends in filing of joint patent applications with 株式会社東芝

燃料電池技術 filed 150 joint applications with 株式会社東芝 for the analysis period (2011 to 2021).

The mean of the number of filings over the last 5 years (2015 to 2019, 86 cases in total) is 17.2, and the median is 15.0. The coefficient of variation (standard deviation/mean) is 0.29, and there have been small fluctuations in the number of filings from year to year.

The number of filings has been decreasing for the last 3 years (2017 to 2019). The company had their highest number of filings in 2017 with 27 cases, and their lowest number in 2014 with 9 cases.

Filing information for the last 5 years (2015 to 2019)
Index Value
Average 17.2 patents
Std Dev 5.0
COV 0.29
Filing trends for the last 3 years
Year Cases YOY
2019 year 14 cases -6.67 %
2018 year 15 cases -44.4 %
2017 year 27 cases +92.9 %

Trends in filing of joint patent applications with パナソニック株式会社

燃料電池技術 filed 302 joint applications with パナソニック株式会社 for the analysis period (2011 to 2021).

The mean of the number of filings over the last 5 years (2015 to 2019, 31 cases in total) is 6.2, and the median is 4.0. The coefficient of variation (standard deviation/mean) is 1.0, and there have been relatively large fluctuations in the number of filings from year to year.

The number of filings has been decreasing for the last 3 years (2017 to 2019). The company had their highest number of filings in 2011 with 115 cases, and their lowest number in 2019 with 0 cases.

Filing information for the last 5 years (2015 to 2019)
Index Value
Average 6.2 patents
Std Dev 6.0
COV 1.0
Filing trends for the last 3 years
Year Cases YOY
2018 year 1 cases -75.0 %
2017 year 4 cases -60.0 %
2016 year 10 cases -37.5 %

Information on important patents (JP)

The following shows JP patents held by 燃料電池技術 that have had an invalidation trial against them demanded or an opposition filed against them by a third party, and 燃料電池技術’s JP patents/patent applications of high importance cited by Examiners in patent examination processes.

By noting the most important patents, you can obtain knowledge of the competitive business environment in which 燃料電池技術 is placed (e.g., whether it is a fiercely competitive environment or an oligopolistic market and the like). In general, it can be understood that a company with a large number of demands for invalidation trials is developing their business in a business environment where IP disputes are common.

If you want to search for more detailed information, you can use Patent Integration to retrieve and download by company cited patents/patent applications or patents undergoing invalidation trials. You can quickly extract important patents from a patent set that includes multiple competitors by cross-referencing with other keywords and patent classifications. Please consider using it for searches for important patents/patent applications.

Search for Information on Important Patents

You can quickly search for important patents/patent applications, such as patents/patent applications that were cited many times and patents that have had invalidation trials demanded against them many times.

Glossary

Cited
Indicates that the patent/patent application has been cited (by Examiners) in notices of reasons for rejection in the examination process of other (Japanese, U.S., or European) patent applications. The higher the number of citations, the more important the patent/patent application is considered to be.
Request for invalidation trial
Indicates that a third party has requested a procedure to invalidate the patent. It is likely to affect the business of third parties and is considered to be of high importance.
Opposition
Indicates that a third party has filed a petition with the Patent Office to hear the validity of the patent again. Like the trial for invalidation, it is considered to be of high importance.
Information provision
Indicates that a third party has provided the Patent Office with useful information for examination for the patent filed. It is usually considered to be of high importance because it is done to prevent the patent from being granted.
Browsing request
Indicates that a third party has requested the Patent Office to view the patent bag (a set of documents exchanged between the Patent Office and the applicant). The bag is often checked prior to trial for invalidation, opposition, and provision of information, and is considered to be a highly important patent.

Invalidationed Trial cases

Top Patents/Patent Applications with the Highest Number of Invalidationed Trial

Of the patent applications filed in the last 10 years (2011-12-01 to 2021-11-30), 3 patents/patent applications were invalidation trial more than once in the examination process of other patent applications. The mean of the number of invalidation trial is 1.0. The most invalidation trial patent is 特許5663694 "空気極材料及び固体酸化物型燃料電池" (1 times) , and the next most invalidation trial patent is 特許5603515 "空気極材料及び固体酸化物型燃料電池" (1 times) .

Top Patents/Patent Applications with the Highest Number of Invalidation Trial over a Period of 10 Years (2011-12-01 ~ 2021-11-30)
- No. Title
1 特許5663694 空気極材料及び固体酸化物型燃料電池 1 times
2 特許5603515 空気極材料及び固体酸化物型燃料電池 1 times
3 特許5836501 カーボン紙を有するフロー電池 1 times

Oppositioned cases

List of latest Oppositioned patents

In the last 3 years (2018-12-01 ~ 2021-11-30), there were 29 patents Opposition from third parties. The average number of Opposition is 1.0 times. The most recently Opposition patent is 特開2019-160475 "燃料電池システム" (Opposition day 2021-09-01) , next is 特許6818960 "セル、セルスタック装置、モジュールおよびモジュール収容装置" (Opposition day 2021-07-26) .

Most recent Opposition (2018-12-01 to 2021-11-30)
- No. Title Opposition days
1 特開2019-160475 燃料電池システム 2021-09-01
2 特許6818960 セル、セルスタック装置、モジュールおよびモジュール収容装置 2021-07-26
3 特許6813992 固体酸化物形燃料電池とこれに用いる電極材料 2021-06-21
4 特許6750192 固体高分子形燃料電池用ガス拡散層 2021-03-02
5 特許6732070 燃料電池のセルスタック 2020-12-24
6 特許6749064 セル、セルスタック装置、モジュール、及びモジュール収納装置 2020-12-04
7 特許6742104 セル間接続部材の製造方法、および固体酸化物形燃料電池用セルの製造方法 2020-11-04
8 特許6673511 固体酸化物形燃料電池空気極用の粉体およびその製造方法 2020-09-25
9 特許6664881 燃料電池空気電極用複合酸化物粉末とその製造方法、燃料電池空気電極並びに燃料電池 2020-09-11
10 特許6635976 燃料電池用電極触媒及びその製造方法 2020-07-28

Show 5 patents  

Protested cases

List of latest Protested patents

In the last 3 years (2018-12-01 ~ 2021-11-30), there were 41 patents Protest from third parties. The average number of Protest is 1.1 times. The most recently Protest patent is 再公表2019/240297 "セル、セルスタック装置、モジュール及びモジュール収納装置" (Protest day 2021-09-06) , next is 再公表2020/004333 "固体酸化物形セル用電極及びそれを用いた固体酸化物形セル" (Protest day 2021-08-02) .

Most recent Protest (2018-12-01 to 2021-11-30)
- No. Title Protest days
1 再公表2019/240297 セル、セルスタック装置、モジュール及びモジュール収納装置 2021-09-06
2 再公表2020/004333 固体酸化物形セル用電極及びそれを用いた固体酸化物形セル 2021-08-02
3 再公表2018/181926 合金部材の製造方法、合金部材、電気化学素子、電気化学モジュール、電気化学装置、エネルギーシステム、および固体酸化物形燃料電池 2021-07-20
4 特開2019-215960 燃料電池および燃料電池の製造方法 2021-06-28
5 再公表2018/181924 電気化学素子、電気化学モジュール、固体酸化物形燃料電池、および製造方法 2021-06-24
6 特表2019-511813 燃料電池 2021-06-09
7 特開2018-204150 炭素繊維シ−ト、ガス拡散電極、膜−電極接合体、固体高分子形燃料電池、及び炭素繊維シートの製造方法 2021-05-21
8 特開2019-186183 燃料電池用の高耐久性電解質膜の製造方法 2021-05-17
9 特開2019-167651 炭素多孔質体 2021-05-14
10 特開2019-081667 窒素含有炭素材料及びその製造方法、並びにそれを用いた燃料電池電極 2021-04-20
11 特開2021-022506 燃料電池セル 2021-04-19
12 特許6934492 燃料電池セル 2021-04-19
13 特表2019-507006 双極性アイオノマー膜 2021-04-09
14 特開2019-125457 燃料電池用ガス拡散層 2021-04-09
15 再公表2018/181923 電気化学装置、エネルギーシステム、および固体酸化物形燃料電池 2021-04-07
16 特開2018-147595 レドックスフロー電池用電極とその製造方法、およびレドックスフロー電池 2021-01-28
17 特開2019-117708 平板型燃料電池スタック 2021-01-27
18 特開2020-095984 電気化学素子、電気化学モジュール、電気化学装置、エネルギーシステム、固体酸化物形燃料電池、および電気化学素子製造方法 2021-01-27
19 特許6910172 セル間接続部材の製造方法 2020-12-25
20 特表2020-524367 高選択性及び高強度のための高度に強化されたイオノマー膜 2020-12-04

Show 15 patents  

Top Patents/Patent Applications with the Highest Number of Protested

Of the patent applications filed in the last 10 years (2011-12-01 to 2021-11-30), 121 patents/patent applications were protest more than once in the examination process of other patent applications. The mean of the number of protest is 2.0. The most protest patent is 特許5936045 "固体酸化物形燃料電池" (6 times) , and the next most protest patent is 特許6174577 "セルおよびセルスタック装置並びに電気化学モジュール、電気化学装置" (6 times) .

Top Patents/Patent Applications with the Highest Number of Protest over a Period of 10 Years (2011-12-01 ~ 2021-11-30)
- No. Title
1 特許5936045 固体酸化物形燃料電池 6 times
2 特許6174577 セルおよびセルスタック装置並びに電気化学モジュール、電気化学装置 6 times
3 特許6008000 前駆体シート 6 times
4 特許6172131 多孔質炭素電極基材 6 times
5 特許5939512 セリウム系複合酸化物の製造方法、固体酸化物型燃料電池セル、及び燃料電池システム 6 times

Inspectioned cases

List of latest Inspectioned patents

In the last 3 years (2018-12-01 ~ 2021-11-30), there were 69 patents Inspection from third parties. The average number of Inspection is 1.3 times. The most recently Inspection patent is 再公表2019/240297 "セル、セルスタック装置、モジュール及びモジュール収納装置" (Inspection day 2021-10-14) , next is 再公表2020/004333 "固体酸化物形セル用電極及びそれを用いた固体酸化物形セル" (Inspection day 2021-09-07) .

Most recent Inspection (2018-12-01 to 2021-11-30)
- No. Title Inspection days
1 再公表2019/240297 セル、セルスタック装置、モジュール及びモジュール収納装置 2021-10-14
2 再公表2020/004333 固体酸化物形セル用電極及びそれを用いた固体酸化物形セル 2021-09-07
3 再公表2018/181926 合金部材の製造方法、合金部材、電気化学素子、電気化学モジュール、電気化学装置、エネルギーシステム、および固体酸化物形燃料電池 2021-09-07
4 再公表2018/181924 電気化学素子、電気化学モジュール、固体酸化物形燃料電池、および製造方法 2021-08-17
5 特許6704544 二次電池および二次電池の製造方法 2021-08-02
6 特表2019-511813 燃料電池 2021-07-28
7 特開2021-022506 燃料電池セル 2021-06-18
8 特許6934492 燃料電池セル 2021-06-18
9 特表2019-507006 双極性アイオノマー膜 2021-06-17
10 再公表2018/181923 電気化学装置、エネルギーシステム、および固体酸化物形燃料電池 2021-06-15
11 特開2019-081667 窒素含有炭素材料及びその製造方法、並びにそれを用いた燃料電池電極 2021-06-10
12 特開2019-167651 炭素多孔質体 2021-05-28
13 特開2019-186183 燃料電池用の高耐久性電解質膜の製造方法 2021-05-21
14 特開2019-125457 燃料電池用ガス拡散層 2021-04-15
15 特許6889900 固体酸化物形燃料電池用アノード及びその製造方法、並びに固体酸化物形燃料電池 2021-04-05
16 特開2019-117708 平板型燃料電池スタック 2021-04-02
17 特開2020-095984 電気化学素子、電気化学モジュール、電気化学装置、エネルギーシステム、固体酸化物形燃料電池、および電気化学素子製造方法 2021-03-30
18 特開2018-147595 レドックスフロー電池用電極とその製造方法、およびレドックスフロー電池 2021-02-05
19 特許6842421 固体ポリマー電解質燃料電池のためのシール 2021-02-05
20 特許5621180 高分子電解質膜の製造方法及び高分子電解質膜 2021-02-04

Show 15 patents  

Top Patents/Patent Applications with the Highest Number of Inspectioned

Of the patent applications filed in the last 10 years (2011-12-01 to 2021-11-30), 356 patents/patent applications were inspection more than once in the examination process of other patent applications. The mean of the number of inspection is 2.3. The most inspection patent is 特許6094038 "多孔質電極基材用前駆体シートの製造方法と、多孔質電極基材の製造方法及び同電極基材" (14 times) , and the next most inspection patent is 特許6461805 "触媒用炭素粉末ならびに当該触媒用炭素粉末を用いる触媒、電極触媒層、膜電極接合体および燃料電池" (10 times) .

Top Patents/Patent Applications with the Highest Number of Inspection over a Period of 10 Years (2011-12-01 ~ 2021-11-30)
- No. Title
1 特許6094038 多孔質電極基材用前駆体シートの製造方法と、多孔質電極基材の製造方法及び同電極基材 14 times
2 特許6461805 触媒用炭素粉末ならびに当該触媒用炭素粉末を用いる触媒、電極触媒層、膜電極接合体および燃料電池 10 times
3 特許5936045 固体酸化物形燃料電池 8 times
4 特許6008000 前駆体シート 8 times
5 特許6172131 多孔質炭素電極基材 8 times

Cited cases

Top Patents/Patent Applications with the Highest Number of Cited

Of the patent applications filed in the last 10 years (2011-12-01 to 2021-11-30), 3,869 patents/patent applications were cited more than once in the examination process of other patent applications. The mean of the number of cited is 2.4. The most cited patent is 特許6608753 "PdRu合金電極材料およびその製造方法" (87 times) , and the next most cited patent is 特許5953575 "全固体アルカリ燃料電池用電解質膜" (38 times) .

Top Patents/Patent Applications with the Highest Number of Cited over a Period of 10 Years (2011-12-01 ~ 2021-11-30)
- No. Title
1 特許6608753 PdRu合金電極材料およびその製造方法 87 times
2 特許5953575 全固体アルカリ燃料電池用電解質膜 38 times
3 特許6077537 レドックスフロー電池システム 26 times
4 特許6030260 燃料電池スタック 20 times
5 特許6139344 電気化学セル 19 times

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