Hiroshima, Japan

Etsuo Shirai

This inventor holds 2 USPTO granted patents. Top assignee: Mazda Motor Corporation. Active years: 1988-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Etsuo Shirai. Retrieved from https://idiyas.com/inventor/etsuo-shirai-usbil963

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


% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 2

Forward Citations = 14(Granted Patents)


Company Filing History:


Years Active: 1988-1989

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2 patents (USPTO):Explore Patents

Title: Etsuo Shirai: Innovator in Automotive Transmission Technology

Introduction

Etsuo Shirai is a notable inventor based in Hiroshima, Japan. He has made significant contributions to the field of automotive technology, particularly in transmission systems. With a total of two patents to his name, Shirai's work has had a meaningful impact on the automotive industry.

Latest Patents

Shirai's latest patents include a shift lever assembly and a gear type transmission apparatus. The shift lever assembly is designed for automotive transmissions and features a lower shift lever that engages and operates the transmission to select the desired gear stage. This assembly includes an upper shift lever that is detachably coupled to the lower lever, allowing for manual actuation. The innovative design ensures that one of the levers terminates in a shaft, while the other has a bore that receives the shaft, facilitating easy detachment through a camming fastener.

The gear type transmission apparatus comprises a transmission case that houses multiple gear trains and an output shaft. This apparatus is designed to transmit engine output through the gear trains, featuring a cover member that secures the opening at the upper portion of the transmission case. A holder member, fixed to the cover, supports a shift rod that operates the gear trains, allowing for selective transmission of the engine's output.

Career Highlights

Etsuo Shirai is currently employed at Mazda Motor Corporation, where he continues to innovate in automotive technology. His work has been instrumental in enhancing the functionality and efficiency of automotive transmission systems.

Collaborations

Shirai has collaborated with notable coworkers, including Hiroaki Nagamatsu and Kazuhiko Moriyama. Their combined expertise has contributed to the development of advanced automotive technologies.

Conclusion

Etsuo Shirai's contributions to automotive transmission technology through his patents reflect his innovative spirit and dedication to the industry. His work at Mazda Motor Corporation continues to influence the future of automotive engineering.

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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