Saitama, Japan

Kei Yoshinaga

This inventor holds 3 USPTO granted patents and 2 EPO patents. Top assignees: Honda Motor Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha. Active years: 1996-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kei Yoshinaga. Retrieved from https://idiyas.com/inventor/kei-yoshinaga

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 33.3


Average Co-Inventor Count = 5.6

ph-index = 2

Forward Citations = 19(Granted Patents)


Company Filing History:


Years Active: 1996-2011

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3 patents (USPTO):Explore Patents

Title: Kei Yoshinaga: Innovator in Clutch System Technology

Introduction

Kei Yoshinaga is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of clutch system technology, holding a total of 3 patents. His innovative designs have enhanced the performance and reliability of clutch systems in various applications.

Latest Patents

Yoshinaga's latest patents include a multi-plate clutch system and a clutch that incorporates damper springs. The multi-plate clutch system features an outer clutch member with multiple first clutch plates and a central spool with second clutch plates interspaced with the first. This design includes a cam mechanism that ensures consistent clutch capacity, even with variations in production accuracy. The clutch with damper springs effectively prevents tilting of the clutch outer when torque varies. It utilizes damper springs to transmit torque and a thrust washer to regulate the position of the clutch outer, ensuring stability during operation.

Career Highlights

Throughout his career, Kei Yoshinaga has worked with prominent companies such as Honda Motor Co., Ltd. and Honda Giken Kogyo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to the advancement of automotive technology.

Collaborations

Yoshinaga has collaborated with talented individuals in the industry, including Isamu Takahashi and Kazumitsu Yamamoto. These partnerships have fostered innovation and creativity in his projects.

Conclusion

Kei Yoshinaga's contributions to clutch system technology demonstrate his expertise and commitment to innovation. His patents reflect a deep understanding of mechanical engineering and a drive to improve automotive performance.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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