Tochigi, Japan

Yasushi Koshigaya

This inventor holds 1 USPTO granted patent. Top assignee: Tochigi Fuji Sangyo Kabushiki Kaisha. Active years: 2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasushi Koshigaya. Retrieved from https://idiyas.com/inventor/yasushi-koshigaya

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 = 8.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 2004

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1 patent (USPTO):Explore Patents

Title: Yasushi Koshigaya: Innovator in Clutch Technology

Introduction

Yasushi Koshigaya is a notable inventor based in Tochigi, Japan. He has made significant contributions to the field of clutch technology, particularly with his innovative designs that enhance performance and efficiency. His work has led to the development of a unique wet type friction clutch and electromagnetic clutch.

Latest Patents

Koshigaya holds a patent for a wet type friction clutch and an electromagnetic clutch. This invention features a pilot clutch that is strategically placed in the magnetic flux path of an electromagnet. Upon excitation of the electromagnet, the armature retracts, allowing the pilot clutch to engage. The design includes multiple interleaved clutch plates that facilitate sliding movements. Notably, adjacent clutch plates are equipped with oil guide passageways, which create a hydrodynamic pressure effect, enabling the clutch plates to separate with minimal drag torque. Additionally, the clutch plates are designed with magnetic flux path forming portions, which help to reduce leakage of magnetic flux.

Career Highlights

Koshigaya is associated with Tochigi Fuji Sangyo Kabushiki Kaisha, where he has been instrumental in advancing clutch technology. His innovative approach has garnered attention in the industry, showcasing his expertise and commitment to engineering excellence.

Collaborations

Koshigaya has collaborated with esteemed colleagues such as Yasuhiko Ishikawa and Makoto Ishizuka. Their combined efforts have contributed to the development of cutting-edge technologies in the field.

Conclusion

Yasushi Koshigaya's contributions to clutch technology exemplify his innovative spirit and dedication to engineering. His patent for the wet type friction clutch and electromagnetic clutch highlights his ability to solve complex problems in mechanical design. Through his work, Koshigaya continues to influence the industry and inspire future innovations.

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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