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For the Inventor, By the Inventor

Tokyo, Japan

Tsutomu Hayashi

This inventor holds 55 USPTO granted patents and 4 published patent applications, plus 5 CIPO patents, primarily in Hydraulic Transmission Systems (CPC class 6048). Top assignees: Honda Giken Kogyo Kabushiki Kaisha, Sakata Shokai Ltd.. Active years: 1977-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Hayashi. Retrieved from https://idiyas.com/inventor/tsutomu-hayashi

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

USPTO Granted Patents = 55 

% Patents Active = 98.2


Average Co-Inventor Count = 2.8

ph-index = 18

Forward Citations = 859(Granted Patents)

Forward Citations (Not Self Cited) = 747(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Hoya, JA (1977)
  • Houya, JP (1982)
  • Hoya, JP (1981 - 1987)
  • Hohya, JP (1991)
  • Tokyo, JP (1982 - 1992)
  • Wako, JP (1996 - 2001)
  • Saitama, JP (1996 - 2004)

Company Filing History:

goldMedal54 out of 10,092 
 
Honda Giken Kogyo Kabushiki Kaisha
 patents
silverMedal1 out of 12 
 
Sakata Shokai Ltd.
 patents

Years Active: 1977-2004

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Areas of Expertise:
Hydraulic Drive
Continuously Variable Transmission
Swash Plate
Hydrostatic Transmission
Power Transmission
Brake Device
Variable Displacement
Clutch Valve
Automatic Transmission Control
Braking System
Motorcycle Brake
Static Hydraulic Pressure
55 patents (USPTO):Explore Patents
1. 6698199 - Swash plate type hydraulic drive transmission and hydrostatic type continuously variable transmission (2004-03-02),
2. 6324843 - Hydraulic-mechanical type continuously variable transmission for vehicle (2001-12-04),
3. 6283009 - Swash plate type hydraulic unit (2001-09-04),
4. 6122914 - Swash plate type continuously variable transmission (2000-09-26),
5. 5584214 - Transmission having a static, hydraulic continuously-variable-speed (1996-12-17),
6. 5575151 - Swash plate type hydraulic actuator with variable eccentricities (1996-11-19),
7. 5554009 - Swash-plate hydraulic pressure device (1996-09-10),
8. 5085053 - Swashplate assembly for a swashplate type hydraulic pressure device (1992-02-04),
9. 5065578 - Hydrostatic continously variable transmission with adjustable clutch (1991-11-19),
10. 5060477 - Hydrostatic continuously variable transmission with a set of pump (1991-10-29),
11. 5058382 - Hydrostatically operated continuously variable transmission (1991-10-22),
12. 5038634 - Power transmission system (1991-08-13),
13. 5016737 - Brake device for vehicles (1991-05-21),
14. 4984161 - Method for controlling automatic transmissions (1991-01-08),
15. 4951469 - Hydrostatic continuously variable transmission (1990-08-28),

Title: Tsutomu Hayashi: Pioneering Inventor from Tokyo

Introduction: Tsutomu Hayashi is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Tsutomu Hayashi holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous commitment to pushing the boundaries of technological advancement.

Career Highlights: With over two decades of experience in the tech industry, Tsutomu Hayashi has worked with leading research institutions and companies to develop cutting-edge solutions that have revolutionized various sectors.

Collaborations: Throughout his career, Tsutomu Hayashi has collaborated with top engineers, scientists, and inventors from around the world, fostering a culture of innovation and knowledge sharing.

Conclusion: Tsutomu Hayashi's passion for innovation and his relentless drive to create a better future through technology make him a true pioneer in the world of inventions.

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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