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For the Inventor, By the Inventor

Wako, Japan

Chiaki Kumagai

This inventor holds 16 USPTO granted patents. Top assignee: Honda Giken Kogyo Kabushiki Kaisha. Active years: 1989-2000.

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

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

USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 9

Forward Citations = 306(Granted Patents)


Location History:

  • Tokorozawa, JP (1989)
  • Wako, JP (1994 - 1996)
  • Saitama, JP (1989 - 2000)

Company Filing History:

goldMedal16 out of 10,092 
 
Honda Giken Kogyo Kabushiki Kaisha
 patents

Years Active: 1989-2000

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16 patents (USPTO):Explore Patents
1. 6154006 - Battery rental system (2000-11-28),
2. D426518 - Battery re-charger for motor-assisted vehicle (2000-06-13),
3. 5577816 - Method of and system for controlling brakes (1996-11-26),
4. 5573313 - Method of and system for controlling brakes (1996-11-12),
5. 5444625 - Target slippage ratio setting device (1995-08-22),
6. 5411325 - Two wheeled vehicle braking system using a target slippage ratio for (1995-05-02),
7. 5385393 - Device for calculating coefficient of friction of road surface (1995-01-31),
8. 5365444 - Method of estimating vehicle velocity and method of and system for (1994-11-15),
9. 5355717 - Road surface condition sensor for controlling brakes (1994-10-18),
10. 5282400 - Controlling device for non-stage transmission for vehicle (1994-02-01),
11. 5214983 - Controlling device for non-stage transmission for vehicle with fault (1993-06-01),
12. 5173680 - System and method for indicating an abnormal condition in a vehicle with (1992-12-22),
13. 5025685 - Controlling device for non-stage transmission for vehicles (1991-06-25),
14. 4887215 - Method of examining operation of electronic control system for internal (1989-12-12),
15. 4870587 - Method of discriminating a stroke of a 4-cycle internal combustion engine (1989-09-26),

Title: Innovations by Chiaki Kumagai

Introduction

Chiaki Kumagai is a notable inventor based in Wako, Japan. He has made significant contributions to the field of technology, particularly in battery systems. With a total of 16 patents to his name, Kumagai continues to push the boundaries of innovation.

Latest Patents

Among his latest inventions is a battery rental system designed to provide an extremely convenient and economical solution for users. This system features unmanned automatic battery rental stations, a communication system, a central processing station, and ID cards for user identification. The process is simple; users insert their ID cards into the system, and the central processing station automatically charges them for removing a battery. Another notable patent is a battery re-charger for motor-assisted vehicles, which enhances the efficiency of electric mobility.

Career Highlights

Kumagai is currently employed at Honda Giken Kogyo Kabushiki Kaisha, a leading company in the automotive industry. His work focuses on developing innovative solutions that improve the user experience and promote sustainable energy use.

Collaborations

Kumagai has collaborated with several talented individuals in his field, including Keishin Tanaka and Toichiro Hikichi. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Chiaki Kumagai's contributions to battery technology exemplify the spirit of innovation. His work not only enhances convenience for users but also supports the advancement of sustainable energy solutions.

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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