Last Updated: 2025/01/01

車両の電気的な推進・制動技術 (JP Patent Analysis Report) (JP SDGs Patent Report)

The Theme Code "車両の電気的な推進・制動技術" had 668 patent application filings in the most recent period (2023-01-01 to 2023-04-30). This is a slightly decreased of -15 filings (-2.2%) over 683 they had in the same period of the previous year (2022-01-01 to 2022-04-30).

The highest number of filings in 2018 with 2,661 cases, and their lowest number in 2023 with 970 cases.

The mean of the number of filings over the last 5 years (2019 to 2024, 9,283 cases in total) is 1,547, and the median is 1,920. 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.

Filing information for the last 5 years (2019 to 2024)
Index Value
Average 1,547 patents
Std Dev 808
COV 0.5

Filing trends for the last 3 years
Year Cases YOY
2023 year 970 cases -49.3 %
2022 year 1,914 cases -0.67 %
2021 year 1,927 cases -0.41 %

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 車両の電気的な推進・制動技術[5H125] for the period of the last 10 years (2015-01-01 to 2024-12-31). 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 車両の電気的な推進・制動技術, 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)    

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..

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

By clicking, you can check the patent application trends in each country of 車両の電気的な推進・制動技術.

Patent Filing Trends in Each Country

Foreign Patent Analysis Report

The following foreign patent analysis reports have been found for 車両の電気的な推進・制動技術. The trends of patent filings of 車両の電気的な推進・制動技術 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

車両の電気的な推進・制動技術, Changes in the Number of JP Patents/Patent Applications

The changes in the number of patent filings of 車両の電気的な推進・制動技術 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 車両の電気的な推進・制動技術 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 車両の電気的な推進・制動技術 patent applications. Characteristic terms with a higher importance are used in more patents/patent applications.

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Search Set (Analysis Patents)

This patent analysis report was created for a patent search set of 18,681 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:
車両の電気的な推進・制動技術[5H125]
Patent Analysis Period
2015-01-01〜2024-12-31
Number of Patents
18,681 patents

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

Same industry / competition company information (JP)

The patent information of the higher applicant in the technical theme 車両の電気的な推進・制動技術 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.

Introduction of patent search function

Competitive analysis can be performed in a short time by using various search functions such as applicant, filing date, and similar patent search.

Trends in filing of joint patent applications in the last 3 years (2023 to 2025).

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 (2023 to 2025) with 383 cases, followed by 本田技研工業株式会社 with 49 cases.

Trends in filing of joint patent applications for the target period (2015 to 2025).

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 (2015 to 2025) with 5,687 cases, followed by 本田技研工業株式会社 with 1,277 cases.

Same industry / competition company, Change in the Number of JP Patents

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.

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 information (JP)

The patent information of the higher applicant in the technical theme 車両の電気的な推進・制動技術 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 (2023 to 2025).

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 (2023 to 2025) with 383 cases, followed by 本田技研工業株式会社 with 49 cases.

Trends in filing of joint patent applications in the last 3 years (2023 to 2025).
Name Cases
トヨタ自動車株式会社 383 cases
本田技研工業株式会社 49 cases
株式会社デンソー 35 cases
日産自動車株式会社 31 cases
株式会社日立製作所 7 cases
株式会社東芝 3 cases
三菱電機株式会社 3 cases

Trends in filing of joint patent applications for the target period (2015 to 2025).

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 (2015 to 2025) with 5,687 cases, followed by 本田技研工業株式会社 with 1,277 cases.

Trends in filing of joint patent applications for the target period (2015 to 2025).
Name Cases
トヨタ自動車株式会社 5,687 cases
本田技研工業株式会社 1,277 cases
株式会社デンソー 907 cases
日産自動車株式会社 519 cases
株式会社日立製作所 365 cases
三菱電機株式会社 341 cases
株式会社東芝 255 cases

Top company, Change in the Number of JP Patents

Below is a ranking of the number of JP patent applications by 車両の電気的な推進・制動技術’s top 7 coapplicants over the last 20 years.

Below is a patent map showing the changes in the numbers of JP patent filings by 車両の電気的な推進・制動技術’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

車両の電気的な推進・制動技術 filed 5,687 joint applications with トヨタ自動車株式会社 for the analysis period (2015 to 2025).

The mean of the number of filings over the last 5 years (2019 to 2024, 2,895 cases in total) is 482, and the median is 588. 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.

The highest number of filings in 2018 with 787 cases, and their lowest number in 2023 with 382 cases.

Filing information for the last 5 years (2019 to 2024)
Index Value
Average 482 patents
Std Dev 238
COV 0.5
Filing trends for the last 3 years
Year Cases YOY
2023 year 382 cases -40.3 %
2022 year 640 cases -7.78 %
2021 year 694 cases +29.24 %

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

車両の電気的な推進・制動技術 filed 519 joint applications with 日産自動車株式会社 for the analysis period (2015 to 2025).

The mean of the number of filings over the last 5 years (2019 to 2024, 216 cases in total) is 36.0, and the median is 38.0. 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.

The number of filings has been decreasing for the last 3 years (2021 to 2024). The highest number of filings in 2015 with 115 cases, and their lowest number in 2023 with 31 cases.

Filing information for the last 5 years (2019 to 2024)
Index Value
Average 36.0 patents
Std Dev 18.8
COV 0.5
Filing trends for the last 3 years
Year Cases YOY
2023 year 31 cases 0
2022 year 31 cases -44.6 %
2021 year 56 cases +24.44 %

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

車両の電気的な推進・制動技術 filed 1,277 joint applications with 本田技研工業株式会社 for the analysis period (2015 to 2025).

The mean of the number of filings over the last 5 years (2019 to 2024, 687 cases in total) is 114, and the median is 124. The coefficient of variation (standard deviation/mean) is 0.7, 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 (2021 to 2024). The highest number of filings in 2019 with 232 cases, and their lowest number in 2023 with 47 cases.

Filing information for the last 5 years (2019 to 2024)
Index Value
Average 114 patents
Std Dev 74.6
COV 0.7
Filing trends for the last 3 years
Year Cases YOY
2023 year 47 cases -65.7 %
2022 year 137 cases +23.42 %
2021 year 111 cases -29.75 %

Trends in filing of joint patent applications with 株式会社日立製作所

車両の電気的な推進・制動技術 filed 365 joint applications with 株式会社日立製作所 for the analysis period (2015 to 2025).

The mean of the number of filings over the last 5 years (2019 to 2024, 179 cases in total) is 29.8, and the median is 33.0. The coefficient of variation (standard deviation/mean) is 0.7, 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 (2021 to 2024). The highest number of filings in 2019 with 66 cases, and their lowest number in 2023 with 7 cases.

Filing information for the last 5 years (2019 to 2024)
Index Value
Average 29.8 patents
Std Dev 21.9
COV 0.7
Filing trends for the last 3 years
Year Cases YOY
2023 year 7 cases -81.1 %
2022 year 37 cases +27.59 %
2021 year 29 cases -27.50 %

Trends in filing of joint patent applications with 株式会社デンソー

車両の電気的な推進・制動技術 filed 907 joint applications with 株式会社デンソー for the analysis period (2015 to 2025).

The mean of the number of filings over the last 5 years (2019 to 2024, 458 cases in total) is 76.3, and the median is 79.0. The coefficient of variation (standard deviation/mean) is 0.7, 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 (2021 to 2024). The highest number of filings in 2019 with 171 cases, and their lowest number in 2023 with 33 cases.

Filing information for the last 5 years (2019 to 2024)
Index Value
Average 76.3 patents
Std Dev 53.1
COV 0.7
Filing trends for the last 3 years
Year Cases YOY
2023 year 33 cases -62.9 %
2022 year 89 cases +28.99 %
2021 year 69 cases -26.60 %

Information on important patents (JP)

The following shows JP patents held by 車両の電気的な推進・制動技術 that have had an invalidation trial against them demanded or an opposition filed against them by a third party, and 車両の電気的な推進・制動技術’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 車両の電気的な推進・制動技術 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.

Oppositioned cases

List of latest Oppositioned patents

In the last 3 years (2022-01-01 ~ 2024-12-31), there were 5 patents Opposition from third parties. The average number of Opposition is 1.0 times. The most recently Opposition patent is 特許7478638 "車両制御装置、車両制御方法および車両制御システム" (Opposition day 2024-11-06) , next is 特許7453436 "ワイヤレス給電評価試験器" (Opposition day 2024-09-18) .

Most recent Opposition (2022-01-01 to 2024-12-31)
- No. Title Opposition days
1 特許7478638 車両制御装置、車両制御方法および車両制御システム 2024-11-06
2 特許7453436 ワイヤレス給電評価試験器 2024-09-18
3 特許7410595 移動体、プログラム及び情報処理方法 2024-02-22
4 特許7217431 電力変換システム、及びケーブル支持器 2023-07-08
5 特許7192740 蓋開閉構造 2023-06-19

Protested cases

List of latest Protested patents

In the last 3 years (2022-01-01 ~ 2024-12-31), there were 16 patents Protest from third parties. The average number of Protest is 1.0 times. The most recently Protest patent is 特開2022-177608 "分岐装置及びシステム" (Protest day 2024-12-03) , next is 特開2022-165246 "燃料電池車両" (Protest day 2024-09-17) .

Most recent Protest (2022-01-01 to 2024-12-31)
- No. Title Protest days
1 特開2022-177608 分岐装置及びシステム 2024-12-03
2 特開2022-165246 燃料電池車両 2024-09-17
3 特開2022-129334 給電システム、管理装置、給電装置、プログラム、およびシステム 2024-06-21
4 特許7596397 電気自動車の充電と配電のための高電力シールドバスバー 2024-02-21
5 特開2022-079316 独立電源装置 2024-01-04
6 特開2022-187878 トンネル内走行用バッテリーカー 2023-08-07
7 特許7397657 タイヤ・ホイール組立体 2023-05-16
8 特開2021-098384 タイヤ・ホイール組立体 2023-05-16
9 特許7568397 タイヤ・ホイール組立体 2023-04-12
10 特許7568396 タイヤ・ホイール組立体 2023-04-12
11 特許7365804 無線受電システム、タイヤ・ホイール組立体、及び、タイヤ 2023-04-07
12 特許7373789 無線給電システム、送電装置、及び受電装置 2023-04-05
13 特許7450355 機械式駐車装置のパレット 2023-03-03
14 特許7238547 自動車用演算装置 2022-06-22
15 特許7146744 電源装置及びこれを備える車両、蓄電装置並びに電源装置用セパレータ 2022-04-06
16 特許7135789 車両用動力伝達装置 2022-01-07

Show 11 patents  

Top Patents/Patent Applications with the Highest Number of Protested

Of the patent applications filed in the last 10 years (2015-01-01 to 2024-12-31), 19 patents/patent applications were protest more than once in the examination process of other patent applications. The mean of the number of protest is 1.0. The most protest patent is 特許7450355 "機械式駐車装置のパレット" (1 times) , and the next most protest patent is 特許6907041 "非接触充電システム" (1 times) .

Top Patents/Patent Applications with the Highest Number of Protest over a Period of 10 Years (2015-01-01 ~ 2024-12-31)
- No. Title
1 特許7450355 機械式駐車装置のパレット 1 times
2 特許6907041 非接触充電システム 1 times
3 特許7397657 タイヤ・ホイール組立体 1 times
4 特許7365804 無線受電システム、タイヤ・ホイール組立体、及び、タイヤ 1 times
5 特開2022-165246 燃料電池車両 1 times

Inspectioned cases

List of latest Inspectioned patents

In the last 3 years (2022-01-01 ~ 2024-12-31), there were 30 patents Inspection from third parties. The average number of Inspection is 1.1 times. The most recently Inspection patent is 特開2019-047548 "車両用温度管理装置" (Inspection day 2024-11-18) , next is 特許7288057 "動力電池の充電方法、及び車両の動力電池の充電方法" (Inspection day 2024-11-15) .

Most recent Inspection (2022-01-01 to 2024-12-31)
- No. Title Inspection days
1 特開2019-047548 車両用温度管理装置 2024-11-18
2 特許7288057 動力電池の充電方法、及び車両の動力電池の充電方法 2024-11-15
3 特開2023-123426 動力電池の充電方法、モータ制御回路及び車両 2024-11-15
4 特許6939750 回転電機 2024-10-25
5 特開2022-165246 燃料電池車両 2024-10-09
6 特開2021-098384 タイヤ・ホイール組立体 2024-08-08
7 特開2024-146936 分散型の電力交換 2024-07-04
8 特開2022-129334 給電システム、管理装置、給電装置、プログラム、およびシステム 2024-06-27
9 特許7596397 電気自動車の充電と配電のための高電力シールドバスバー 2024-04-17
10 特開2024-139725 電気車両の変速システムの制御方法 2024-04-11
11 特開2024-160927 電気車両のバッテリ電力補充管理方法、システム、及びコンピュータープログラム 2024-02-06
12 特開2022-079316 独立電源装置 2024-02-02
13 特開2024-081150 バッテリ状態に基づく車両の始動方法、それを実施するための電気車両、及びコンピュータプログラム 2024-01-04
14 特許7439820 モータユニット 2023-11-27
15 特開2022-187878 トンネル内走行用バッテリーカー 2023-08-17
16 特許7044286 遮蔽装置および車両 2023-08-03
17 特許7452536 駆動装置、および車両駆動システム 2023-08-01
18 再公表2020/066955 駆動装置 2023-07-25
19 特許7397657 タイヤ・ホイール組立体 2023-06-15
20 特許7373789 無線給電システム、送電装置、及び受電装置 2023-05-22

Show 15 patents  

Top Patents/Patent Applications with the Highest Number of Inspectioned

Of the patent applications filed in the last 10 years (2015-01-01 to 2024-12-31), 78 patents/patent applications were inspection more than once in the examination process of other patent applications. The mean of the number of inspection is 1.1. The most inspection patent is 特開2021-098384 "タイヤ・ホイール組立体" (2 times) , and the next most inspection patent is 特許7596397 "電気自動車の充電と配電のための高電力シールドバスバー" (2 times) .

Top Patents/Patent Applications with the Highest Number of Inspection over a Period of 10 Years (2015-01-01 ~ 2024-12-31)
- No. Title
1 特開2021-098384 タイヤ・ホイール組立体 2 times
2 特許7596397 電気自動車の充電と配電のための高電力シールドバスバー 2 times
3 特許6893518 ドライブラインモデル 2 times
4 特許6447326 ハイブリッド車両の設計システム 2 times
5 特許6758025 高いハイブリッド化度を有するハイブリッド車両のための制御システム 2 times

Cited cases

Top Patents/Patent Applications with the Highest Number of Cited

Of the patent applications filed in the last 10 years (2015-01-01 to 2024-12-31), 5,671 patents/patent applications were cited more than once in the examination process of other patent applications. The mean of the number of cited is 2.6. The most cited patent is 特許6273656 "デマンド型運行管理システムの制御方法及びデマンド型運行管理システム" (77 times) , and the next most cited patent is 特許6572567 "交換価格設定装置、交換価格設定方法、プログラム、および記録媒体" (42 times) .

Top Patents/Patent Applications with the Highest Number of Cited over a Period of 10 Years (2015-01-01 ~ 2024-12-31)
- No. Title
1 特許6273656 デマンド型運行管理システムの制御方法及びデマンド型運行管理システム 77 times
2 特許6572567 交換価格設定装置、交換価格設定方法、プログラム、および記録媒体 42 times
3 特許7264036 車両 40 times
4 特開2018-029430 電動車両 34 times
5 特許6420199 自転車用装置 30 times

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