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For the Inventor, By the Inventor

Hiroshima, Japan

Katsuhiko Yokooku

This inventor holds 15 USPTO granted patents. Top assignees: Toyo Kogyo Co., Ltd., Mazda Motor Corporation. Active years: 1979-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhiko Yokooku. Retrieved from https://idiyas.com/inventor/katsuhiko-yokooku

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

USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 10

Forward Citations = 254(Granted Patents)


Location History:

  • Saka, JP (1986)
  • Hiroshima, JP (1979 - 1988)

Company Filing History:

goldMedal8 out of 264 
 
Toyo Kogyo Co., Ltd.
 patents
silverMedal7 out of 4,753 
 
Mazda Motor Corporation
 patents

Years Active: 1979-1988

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15 patents (USPTO):Explore Patents
1. 4763629 - Air-fuel ratio control system for engine (1988-08-16),
2. 4627311 - Automotive driving control system utilizing a stepless transmission (1986-12-09),
3. 4589302 - Control system for an automotive driving system including an engine (1986-05-20),
4. 4572031 - Automotive driving control system utilizing a stepless transmission (1986-02-25),
5. 4532905 - Fuel injection control system for controlling the fuel distribution to (1985-08-06),
6. 4508078 - Electrically operated engine throttle valve actuating device (1985-04-02),
7. 4508076 - Idling speeding control system for internal combustion engine (1985-04-02),
8. 4471745 - Exhaust gas recirculation system for internal combustion engine (1984-09-18),
9. 4434749 - Cooling system for liquid-cooled internal combustion engines (1984-03-06),
10. 4433654 - Knock control device for internal combustion engine (1984-02-28),
11. 4428355 - Exhaust gas recirculation control for internal combustion engines (1984-01-31),
12. 4423705 - Cooling system for liquid-cooled internal combustion engines (1984-01-03),
13. 4376431 - Air-fuel ratio control system with altitude compensator (1983-03-15),
14. 4283368 - Radial flow catalytic converter (1981-08-11),
15. 4142492 - Exhaust gas purification system (1979-03-06),

Title: Katsuhiko Yokooku - Pioneering Inventor from Hiroshima

Introduction: Katsuhiko Yokooku is a renowned inventor hailing from Hiroshima, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Katsuhiko Yokooku holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Yokooku has worked with leading tech companies in Japan, spearheading research and development projects that have led to the creation of cutting-edge products and solutions.

Collaborations: Throughout his career, Katsuhiko Yokooku has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge sharing.

Conclusion: Katsuhiko Yokooku's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a trailblazer in the world of technology, inspiring the next generation of inventors to push the boundaries of what is possible.

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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