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For the Inventor, By the Inventor

Shizuoka, Japan

Kouichi Kumagai

This inventor holds 2 USPTO granted patents. Top assignee: Kabushiki Kaisha F. C. C.. Active years: 2003-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouichi Kumagai. Retrieved from https://idiyas.com/inventor/kouichi-kumagai-mv9fml2i

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

Calculating rank
USPTO Granted Patents = 2

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 1

Forward Citations = 4(Granted Patents)


Location History:

  • Shizouka, JP (2003)
  • Shizuoka, JP (2004)

Company Filing History:

goldMedal2 out of 172 
 
Kabushiki Kaisha F. C. C.
 patents

Years Active: 2003-2004

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2 patents (USPTO):Explore Patents
1. 6719114 - Clutch outer (2004-04-13),
2. 6505717 - Clutch weight for wet centrifugal clutch and process for producing the same (2003-01-14),

Title: Kouichi Kumagai: Innovator in Clutch Technology

Introduction

Kouichi Kumagai is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of clutch technology, holding 2 patents that showcase his innovative approach to engineering.

Latest Patents

Kumagai's latest patents include a design for a clutch outer. This clutch outer features a cylindrical portion with multiple slits extending in an axial direction. Engagement claws on the outer peripheries of friction plates engage these slits, which consist of both wide and narrow portions. The design allows for efficient die-casting, with a draft for the wide portion being less than that for the narrow portion. His second patent focuses on a clutch weight for a wet centrifugal clutch, which is formed from sintered metal. This innovation reduces costs while stabilizing clutch performance and enhancing appearance.

Career Highlights

Kouichi Kumagai works at Kabushiki Kaisha F. C. C., where he continues to develop cutting-edge technologies in the automotive sector. His work has been instrumental in improving the efficiency and reliability of clutch systems.

Collaborations

Kumagai collaborates with talented coworkers, including Takashi Kodama and Kazuyoshi Miyachi, who contribute to the innovative environment at Kabushiki Kaisha F. C. C.

Conclusion

Kouichi Kumagai's contributions to clutch technology reflect his dedication to innovation and engineering excellence. His patents not only enhance performance but also demonstrate a commitment to cost-effective solutions in the automotive industry.

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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