The Theme Code "二次電池技術" had 591 patent application filings in the most recent period (2022-01-01 to 2022-06-30). This is a significantly decreased of -148 filings (-20.0%) over 739 they had in the same period of the previous year (2021-01-01 to 2021-06-30).
The company had their highest number of filings in 2015 with 2,147 cases, and their lowest number in 2022 with 944 cases.
The mean of the number of filings over the last 5 years (2018 to 2023, 8,049 cases in total) is 1,342, and the median is 1,488. The coefficient of variation (standard deviation/mean) is 0.5, and there have been big fluctuations in the number of filings from year to year.
Index | Value |
---|---|
Average | 1,342 patents |
Std Dev | 674 |
COV | 0.5 |
Year | Cases | YOY |
---|---|---|
2022 year | 944 cases | -34.6 % |
2021 year | 1,443 cases | -5.81 % |
2020 year | 1,532 cases | -20.13 % |
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 二次電池技術[5H029] for the period of the last 10 years (2014-01-01 to 2024-02-29). 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 二次電池技術, 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.
He is a patent attorney at a patent office. 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.
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..
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.
The changes in the number of patent filings of 二次電池技術 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.
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 二次電池技術 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.
The following is a list of words (characteristic terms) often used in 二次電池技術 patent applications. Characteristic terms with a higher importance are used in more patents/patent applications.
This patent analysis report was created for a patent search set of 16,340 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.
The patent information of the higher applicant in the technical theme 二次電池技術 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.
Comparing the number of applications of each company, 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 (2022 to 2024) with 155 cases, followed by 株式会社GSユアサ with 28 cases.
Name | Cases |
---|---|
トヨタ自動車株式会社 | 155 cases |
株式会社GSユアサ | 28 cases |
パナソニックホールディングス株式会社 | 15 cases |
日産自動車株式会社 | 15 cases |
株式会社豊田自動織機 | 12 cases |
株式会社東芝 | 10 cases |
マクセル株式会社 | 6 cases |
Comparing the number of applications of each company, トヨタ自動車株式会社 has the highest number of joint applications in the last for the target period (2014 to 2024) with 2,142 cases, followed by 株式会社豊田自動織機 with 645 cases.
Name | Cases |
---|---|
トヨタ自動車株式会社 | 2,142 cases |
株式会社豊田自動織機 | 645 cases |
株式会社GSユアサ | 476 cases |
株式会社東芝 | 320 cases |
日産自動車株式会社 | 275 cases |
マクセル株式会社 | 226 cases |
三洋電機株式会社 | 210 cases |
株式会社日立製作所 | 131 cases |
パナソニックホールディングス株式会社 | 106 cases |
ソニーグループ株式会社 | 47 cases |
三菱化学株式会社 | 15 cases |
Below is a patent map showing changes in the number of applications for JP patents of 11 companies in the same industry over the past 20 years.
The patent information of the higher applicant in the technical theme 二次電池技術 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.
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 (2022 to 2024) with 155 cases, followed by パナソニックホールディングス株式会社 with 15 cases.
Name | Cases |
---|---|
トヨタ自動車株式会社 | 155 cases |
パナソニックホールディングス株式会社 | 15 cases |
マクセル株式会社 | 6 cases |
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 (2014 to 2024) with 2,142 cases, followed by マクセル株式会社 with 226 cases.
Name | Cases |
---|---|
トヨタ自動車株式会社 | 2,142 cases |
マクセル株式会社 | 226 cases |
三洋電機株式会社 | 210 cases |
株式会社日立製作所 | 131 cases |
パナソニックホールディングス株式会社 | 106 cases |
ソニーグループ株式会社 | 47 cases |
三菱化学株式会社 | 15 cases |
Below is a patent map showing the changes in the numbers of JP patent filings by 二次電池技術’s top 7 coapplicants over the last 20 years.
二次電池技術 filed 2,142 joint applications with トヨタ自動車株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 1,035 cases in total) is 172, and the median is 170. The coefficient of variation (standard deviation/mean) is 0.6, 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 (2020 to 2023). The company had their highest number of filings in 2018 with 312 cases, and their lowest number in 2021 with 144 cases.
Index | Value |
---|---|
Average | 172 patents |
Std Dev | 95.8 |
COV | 0.6 |
Year | Cases | YOY |
---|---|---|
2022 year | 155 cases | +7.64 % |
2021 year | 144 cases | -21.74 % |
2020 year | 184 cases | -23.33 % |
二次電池技術 filed 106 joint applications with パナソニックホールディングス株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 68 cases in total) is 11.3, and the median is 12.5. The coefficient of variation (standard deviation/mean) is 0.6, 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 (2020 to 2023). The company had their highest number of filings in 2020 with 19 cases, and their lowest number in 2015 with 2 cases.
Index | Value |
---|---|
Average | 11.3 patents |
Std Dev | 6.8 |
COV | 0.6 |
Year | Cases | YOY |
---|---|---|
2022 year | 15 cases | +150 % |
2021 year | 6 cases | -68.4 % |
2020 year | 19 cases | +90.0 % |
二次電池技術 filed 210 joint applications with 三洋電機株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 5 years (2018 to 2023, 66 cases in total) is 11.0, and the median is 1.0. The coefficient of variation (standard deviation/mean) is 1.4, and there have been very big fluctuations in the number of filings from year to year.
The company had their highest number of filings in 2015 with 42 cases, and their lowest number in 2022 with 0 cases.
Index | Value |
---|---|
Average | 11.0 patents |
Std Dev | 15.3 |
COV | 1.4 |
Year | Cases | YOY |
---|---|---|
2020 year | 2 cases | -92.3 % |
2019 year | 26 cases | -31.6 % |
2018 year | 38 cases | 0 |
二次電池技術 filed 47 joint applications with ソニーグループ株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 10 years (2013 to 2023, 76 cases in total) is 6.9, and the median is 0. The coefficient of variation (standard deviation/mean) is 1.6, and there have been very big fluctuations in the number of filings from year to year.
The company had their highest number of filings in 2014 with 30 cases, and their lowest number in 2022 with 0 cases.
Index | Value |
---|---|
Average | 6.9 patents |
Std Dev | 11.2 |
COV | 1.6 |
Year | Cases | YOY |
---|---|---|
2016 year | 5 cases | -58.3 % |
2015 year | 12 cases | -60.0 % |
2014 year | 30 cases | +3.45 % |
二次電池技術 filed 15 joint applications with 三菱化学株式会社 for the analysis period (2014 to 2024).
The mean of the number of filings over the last 10 years (2013 to 2023, 44 cases in total) is 4.0, and the median is 0. The coefficient of variation (standard deviation/mean) is 2.2, and there have been very big fluctuations in the number of filings from year to year.
The company had their highest number of filings in 2014 with 12 cases, and their lowest number in 2022 with 0 cases.
Index | Value |
---|---|
Average | 4.0 patents |
Std Dev | 8.6 |
COV | 2.2 |
Year | Cases | YOY |
---|---|---|
2016 year | 1 cases | -50.0 % |
2015 year | 2 cases | -83.3 % |
2014 year | 12 cases | -58.6 % |
The following shows JP patents held by 二次電池技術 that have had an invalidation trial against them demanded or an opposition filed against them by a third party, and 二次電池技術’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 二次電池技術 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.
Of the patent applications filed in the last 10 years (2014-03-01 to 2024-02-29), 1 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6595152 "リチウム二次電池の固体電解質及び当該固体電解質用硫化物系化合物" (1 times) .
- | No. | Title | |
---|---|---|---|
1 | 特許6595152 | リチウム二次電池の固体電解質及び当該固体電解質用硫化物系化合物 | 1 times |
In the last 3 years (2021-03-01 ~ 2024-02-29), there were 40 patents Opposition from third parties. The average number of Opposition is 1.0 times. The most recently Opposition patent is 特許7307543 "電極材料およびそれらの調製のためのプロセス" (Opposition day 2024-01-10) , next is 特許7302614 "二次電池" (Opposition day 2023-12-28) .
- | No. | Title | Opposition days |
---|---|---|---|
1 | 特許7307543 | 電極材料およびそれらの調製のためのプロセス | 2024-01-10 |
2 | 特許7302614 | 二次電池 | 2023-12-28 |
3 | 特許7299816 | 積層型電池の製造方法、積層型電池の製造装置、及び積層型電池 | 2023-12-07 |
4 | 特許7284773 | 全固体二次電池 | 2023-11-13 |
5 | 特許7259100 | リチウムイオン蓄電池 | 2023-10-17 |
6 | 特許7256706 | 全固体リチウムイオン二次電池用電極活物質成形体、全固体リチウムイオン二次電池用電極、全固体リチウムイオン二次電池及び全固体リチウムイオン二次電池用電極活物質成形体の製造方法 | 2023-10-11 |
7 | 特許7206762 | 電極及びその製造方法、電極素子、非水電解液蓄電素子 | 2023-07-12 |
8 | 特許7209636 | 固体電解質の表面を処理するためのシステム及び方法 | 2023-07-12 |
9 | 特許7174875 | リチウム含有塩化物及びその製造方法、並びに固体電解質及び電池 | 2023-05-17 |
10 | 特許7174181 | リチウム含有塩化物及びその製造方法、並びに固体電解質及び電池 | 2023-05-17 |
In the last 3 years (2021-03-01 ~ 2024-02-29), there were 58 patents Protest from third parties. The average number of Protest is 1.2 times. The most recently Protest patent is 特開2022-181111 "蓄電デバイスおよび蓄電デバイス用セパレータ" (Protest day 2024-02-02) , next is 特開2021-152993 "蓄電装置用外装材及びこれを用いた蓄電装置" (Protest day 2024-01-30) .
- | No. | Title | Protest days |
---|---|---|---|
1 | 特開2022-181111 | 蓄電デバイスおよび蓄電デバイス用セパレータ | 2024-02-02 |
2 | 特開2021-152993 | 蓄電装置用外装材及びこれを用いた蓄電装置 | 2024-01-30 |
3 | 特表2023-527035 | 高安全性及び高容量を兼ね備えたリチウム電池用正極板、その製造方法及び使用 | 2024-01-30 |
4 | 再公表2020/066951 | 全固体二次電池用バインダー組成物、全固体二次電池用スラリー組成物、固体電解質含有層および全固体二次電池 | 2024-01-29 |
5 | 特開2023-070239 | 電池ケースおよび電池 | 2024-01-25 |
6 | 特表2023-504467 | フッ素化非環状カーボネートとフッ素化環状カーボネートとを有する電解質組成物 | 2024-01-23 |
7 | 特表2023-540726 | 二次電池用パウチバッグ及びこれを含むパウチ型二次電池 | 2024-01-19 |
8 | 特表2023-549235 | ナトリウム金属電池及び電気化学装置 | 2023-12-25 |
9 | 特開2023-063507 | 電池用非水電解液及びリチウム二次電池 | 2023-12-21 |
10 | 特表2023-548105 | ナトリウムイオン電池の負極極片、電気化学装置及び電子デバイス | 2023-12-11 |
11 | 特開2021-136091 | 全固体電池用外装材及びこれを用いた全固体電池 | 2023-11-30 |
12 | 再公表2020/158873 | 全固体電池用外装材及びこれを用いた全固体電池 | 2023-11-29 |
13 | 特開2021-125415 | 蓄電装置用外装材及びこれを用いた蓄電装置 | 2023-11-20 |
14 | 特許7385543 | タブリード及び非水電解質デバイス | 2023-09-29 |
15 | 特開2021-108264 | 蓄電装置用外装材及びこれを用いた蓄電装置 | 2023-09-06 |
16 | 特表2022-546129 | 硫化物ベースの固体複合電解質膜 | 2023-08-15 |
17 | 特開2023-021107 | 正極活物質、その製造方法、およびこれを含むリチウム二次電池 | 2023-07-12 |
18 | 特表2022-522999 | 濃縮された粒界を有する多結晶金属酸化物 | 2023-07-06 |
19 | 特許7356257 | 硫化物系全固体電池用ラミネートシート及びそれを用いたラミネートパック | 2023-05-31 |
20 | 特許7318647 | 蓄電装置用外装材及びこれを用いた蓄電装置 | 2023-05-26 |
Of the patent applications filed in the last 10 years (2014-03-01 to 2024-02-29), 179 patents/patent applications were protest more than once in the examination process of other patent applications. The mean of the number of protest is 1.3. The most protest patent is 特開2015-205815 "リチウムまたはナトリウムビス(フルオロスルホニル)イミダイドを製造する方法" (6 times) , and the next most protest patent is 再公表2015/186363 "リチウムイオン二次電池電極用バインダー組成物、リチウムイオン二次電池電極用スラリー組成物、リチウムイオン二次電池用電極およびリチウムイオン二次電池" (5 times) .
- | No. | Title | |
---|---|---|---|
1 | 特開2015-205815 | リチウムまたはナトリウムビス(フルオロスルホニル)イミダイドを製造する方法 | 6 times |
2 | 再公表2015/186363 | リチウムイオン二次電池電極用バインダー組成物、リチウムイオン二次電池電極用スラリー組成物、リチウムイオン二次電池用電極およびリチウムイオン二次電池 | 5 times |
3 | 特許6709586 | カーボンブラック分散液およびその利用 | 5 times |
4 | 特許6577697 | 炭素繊維フェルト、その製造方法、及び液流通型電解槽 | 4 times |
5 | 特開2016-171074 | リチウムイオン二次電池電極用バインダー組成物、リチウムイオン二次電池電極用スラリー組成物、リチウムイオン二次電池用電極およびリチウムイオン二次電池 | 4 times |
In the last 3 years (2021-03-01 ~ 2024-02-29), there were 113 patents Inspection from third parties. The average number of Inspection is 1.2 times. The most recently Inspection patent is 特表2023-527035 "高安全性及び高容量を兼ね備えたリチウム電池用正極板、その製造方法及び使用" (Inspection day 2024-02-20) , next is 特表2023-540726 "二次電池用パウチバッグ及びこれを含むパウチ型二次電池" (Inspection day 2024-02-16) .
- | No. | Title | Inspection days |
---|---|---|---|
1 | 特表2023-527035 | 高安全性及び高容量を兼ね備えたリチウム電池用正極板、その製造方法及び使用 | 2024-02-20 |
2 | 特表2023-540726 | 二次電池用パウチバッグ及びこれを含むパウチ型二次電池 | 2024-02-16 |
3 | 特表2023-504467 | フッ素化非環状カーボネートとフッ素化環状カーボネートとを有する電解質組成物 | 2024-02-15 |
4 | 特開2022-181111 | 蓄電デバイスおよび蓄電デバイス用セパレータ | 2024-02-06 |
5 | 再公表2020/066951 | 全固体二次電池用バインダー組成物、全固体二次電池用スラリー組成物、固体電解質含有層および全固体二次電池 | 2024-01-30 |
6 | 特表2023-549235 | ナトリウム金属電池及び電気化学装置 | 2024-01-22 |
7 | 特開2023-063507 | 電池用非水電解液及びリチウム二次電池 | 2024-01-19 |
8 | 特表2023-548105 | ナトリウムイオン電池の負極極片、電気化学装置及び電子デバイス | 2024-01-18 |
9 | 特開2021-125415 | 蓄電装置用外装材及びこれを用いた蓄電装置 | 2023-12-18 |
10 | 特開2021-136091 | 全固体電池用外装材及びこれを用いた全固体電池 | 2023-12-18 |
11 | 特開2021-108264 | 蓄電装置用外装材及びこれを用いた蓄電装置 | 2023-12-18 |
12 | 特開2022-041420 | 塗布方法、燃料電池の製造方法または燃料電池、2次電池の製造方法または2次電池、全固体電池の製造方法または全固体電池 | 2023-11-22 |
13 | 特許7389277 | イオン伝導性層およびその形成方法 | 2023-11-16 |
14 | 特許7385543 | タブリード及び非水電解質デバイス | 2023-10-26 |
15 | 特許7364804 | イオン伝導性材料、イオン伝導性材料を含む電解質、およびその形成方法 | 2023-10-05 |
16 | 特表2022-546129 | 硫化物ベースの固体複合電解質膜 | 2023-09-14 |
17 | 特開2023-021107 | 正極活物質、その製造方法、およびこれを含むリチウム二次電池 | 2023-09-14 |
18 | 特開2020-135949 | 活物質、それを用いた正極合剤及び固体電池 | 2023-09-05 |
19 | 特開2020-140837 | 活物質、それを用いた正極合剤及び固体電池 | 2023-08-22 |
20 | 特開2020-140839 | 活物質、それを用いた正極合剤及び固体電池 | 2023-08-22 |
Of the patent applications filed in the last 10 years (2014-03-01 to 2024-02-29), 286 patents/patent applications were inspection more than once in the examination process of other patent applications. The mean of the number of inspection is 1.3. The most inspection patent is 再公表2015/186363 "リチウムイオン二次電池電極用バインダー組成物、リチウムイオン二次電池電極用スラリー組成物、リチウムイオン二次電池用電極およびリチウムイオン二次電池" (10 times) , and the next most inspection patent is 特開2015-205815 "リチウムまたはナトリウムビス(フルオロスルホニル)イミダイドを製造する方法" (9 times) .
- | No. | Title | |
---|---|---|---|
1 | 再公表2015/186363 | リチウムイオン二次電池電極用バインダー組成物、リチウムイオン二次電池電極用スラリー組成物、リチウムイオン二次電池用電極およびリチウムイオン二次電池 | 10 times |
2 | 特開2015-205815 | リチウムまたはナトリウムビス(フルオロスルホニル)イミダイドを製造する方法 | 9 times |
3 | 特許6729385 | リチウムイオン二次電池負極用ペースト組成物、リチウムイオン二次電池負極用複合粒子、リチウムイオン二次電池負極用スラリー組成物、リチウムイオン二次電池用負極およびリチウムイオン二次電池 | 5 times |
4 | 特許6425484 | 電池用セパレータ | 4 times |
5 | 特許7067473 | 非水系二次電池電極用バインダー組成物、非水系二次電池電極用スラリー組成物、非水系二次電池用電極および非水系二次電池 | 4 times |
Of the patent applications filed in the last 10 years (2014-03-01 to 2024-02-29), 4,801 patents/patent applications were cited more than once in the examination process of other patent applications. The mean of the number of cited is 3.2. The most cited patent is 特許6414700 "非水電解質二次電池" (164 times) , and the next most cited patent is 特許5873533 "リチウムイオン電池用硫化物系固体電解質" (52 times) .
- | No. | Title | |
---|---|---|---|
1 | 特許6414700 | 非水電解質二次電池 | 164 times |
2 | 特許5873533 | リチウムイオン電池用硫化物系固体電解質 | 52 times |
3 | 特開2015-201432 | 非水電解液二次電池用正極活物質粒子粉末及びその製造方法、並びに非水電解液二次電池 | 48 times |
4 | 特許6397262 | 非水電解質二次電池 | 37 times |
5 | 特許6978207 | リチウムイオン電池 | 36 times |
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