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For the Inventor, By the Inventor

Hyogo, Japan

Koji Irikura

This inventor holds 60 USPTO granted patents, primarily in Hydraulic Transaxles (CPC class 180 ). Top assignees: Kanzaki Kokyukoki Mfg. Co., Ltd., Tuff Torq Corporation, Tuff Toro Corporation. Active years: 1986-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Irikura. Retrieved from https://idiyas.com/inventor/koji-irikura

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

USPTO Granted Patents = 60

% Patents Active = 46.7

Average Co-Inventor Count = 1.8

ph-index = 17

Forward Citations = 722(Granted Patents)

Forward Citations (Not Self Cited) = 658(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Nishinomiya, JP (1986 - 1992)
  • Kobe, JP (1993 - 2002)
  • Amagasaki, JP (1994 - 2003)
  • Amagasaki-shi Hyogo, JP (2006)
  • Amagasaki-shi, Hyogo, JP (2005 - 2007)
  • Hyogo-ken, JP (2000 - 2010)
  • Morristown, TN (US) (2007 - 2012)
  • Hyogo, JP (1994 - 2013)

Company Filing History:

goldMedal45 out of 541 
 
Kanzaki Kokyukoki Mfg. Co., Ltd.
 patents
silverMedal2 out of 17 
 
Tuff Torq Corporation
 patents
bronzeMedal1 out of 1 
 
Tuff Toro Corporation
 patent
4. 15 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1986-2013

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Areas of Expertise:
Hydraulic Transaxle
Vehicle Steering
Multi-Wheel Vehicle
Axle Driving Apparatus
Transmission Apparatus
Variable Displacement Pump
Hydrostatic Transaxle
Differential Gear Assembly
Automatic Traction Enhancement
Twin Transmissions
Zero Turn Vehicle
Riding Lawn Mower
60 patents (USPTO):Explore Patents
1. 8365636 - Automatic traction enhancement for a transaxle (2013-02-05),
2. 8250862 - Vehicle (2012-08-28),
3. 7987669 - Hydraulic steering transaxle and hydraulic driving vehicle (2011-08-02),
4. 7971675 - Hydraulic transaxle and vehicle comprising it (2011-07-05),
5. 7954907 - Supplemental brake system of zero turn vehicle (2011-06-07),
6. 7857079 - Multi-wheel vehicle (2010-12-28),
7. 7856820 - Axle driving apparatus (2010-12-28),
8. 7841429 - Hydraulic transaxle (2010-11-30),
9. 7690469 - Central differential for a working vehicle (2010-04-06),
10. 7591338 - Hydraulic transaxle and vehicle comprising it (2009-09-22),
11. 7510035 - Hydraulic transaxle (2009-03-31),
12. 7493998 - Automatic traction enhancement for transaxle (2009-02-24),
13. 7493975 - Multi-wheel vehicle (2009-02-24),
14. 7490708 - Automatic traction enhancement for a transaxle (2009-02-17),
15. 7484365 - Axle driving apparatus (2009-02-03),

Title: Koji Irikura: Pioneering Innovation in Japan and Beyond

Introduction:

Koji Irikura, a visionary inventor based in Hyogo, Japan, is renowned for his relentless drive to push the boundaries of innovation. With a staggering 60 patents to his name, Irikura's work has paved the way for a new generation of inventors and entrepreneurs.

Latest Patents:

One of Irikura's latest patents is for an "Automatic traction enhancement for a transaxle," revolutionizing the design and functionality of transaxles for working vehicles. This groundbreaking technology features an integrated hydrostatic transmission and a bi-directional overrunning clutch, enhancing the performance and efficiency of vehicles.

Career Highlights:

Having worked at esteemed companies such as Kanzaki Kokyukoki Mfg. Co., Ltd., Irikura has honed his expertise in the field of mechanical engineering and innovation. Throughout his career, he has demonstrated a knack for developing cutting-edge solutions that challenge the status quo and set new industry standards.

Collaborations:

Irikura's collaborative spirit is evident in his partnerships with industry peers such as Norihiro Ishii and Hiroaki Shimizu. Together, they have worked on projects that have pushed the boundaries of what is possible and inspired others to think innovatively.

Conclusion:

Koji Irikura's passion for innovation knows no bounds, and his contributions to the field of mechanical engineering have left an indelible mark on the industry. As he continues to inspire the next generation of inventors and entrepreneurs, his legacy will endure, shaping the future of innovation in Japan and beyond.

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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