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For the Inventor, By the Inventor

Fujisawa, Japan

Yoshihiko Yamada

This inventor holds 40 USPTO granted patents and 4 EPO patents, primarily in Variable Valve Technology. Top assignees: Unisia Jecs Corporation, Nissan Motor Company Limited, Hitachi, Ltd.. Active years: 1992-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihiko Yamada. Retrieved from https://idiyas.com/inventor/yoshihiko-yamada

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

USPTO Granted Patents = 40

% Patents Active = 65.0


Average Co-Inventor Count = 2.7

ph-index = 10

Forward Citations = 310(Granted Patents)


Location History:

  • Komae, JP (1997)
  • Tokyo, JP (1999)
  • Kanagawa, JP (1992 - 2009)
  • Atsugi, JP (1994 - 2018)
  • Fujisawa, JP (2006 - 2021)

Company Filing History:

goldMedal14 out of 556 
 
Unisia Jecs Corporation
 patents
silverMedal11 out of 13,420 
 
Nissan Motor Company Limited
 patents
bronzeMedal10 out of 42,731 
 
Hitachi, Ltd.
 patents
4. 9 out of 2,028 
 
Hitachi Automotive Systems, Ltd.
 patents
5. 3 out of 134 
 
Atsugi Unisia Corp.
 patents
6. 2 out of 326 
 
Harmonic Drive Systems Inc.
 patents
7. 1 out of 20,313 
 
Hyundai Motor Company
 patents
8. 1 out of 1 
 
Unisia Corporation
 patent
9. 2 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1992-2021

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Areas of Expertise:
Variable Valve Actuation
Internal Combustion Engine
Actuator Mechanism
Valve Timing Control
Electromagnetic Drive
Compression Ratio
Valve Operating Device
Cam Shaft Assembly
Engine Control Mechanism
Rocker-Arm Shaft
Variable Timing Mechanism
Driving Mechanism
40 patents (USPTO):Explore Patents
1. 10883421 - Actuator of variable compression ratio mechanism and actuator of link mechanism (2021-01-05),
2. 10400668 - Actuator device for variable compression ratio internal combustion engine (2019-09-03),
3. 10400667 - Variable compression ratio mechanism for internal combustion engine (2019-09-03),
4. 10400666 - Variable compression ratio mechanism for internal combustion engine (2019-09-03),
5. 10156186 - Actuator for link mechanism for internal combustion engine, and method for assembling said actuator (2018-12-18),
6. 10107155 - Valve timing control apparatus of internal combustion engine (2018-10-23),
7. 9797307 - Actuator of variable compression ratio mechanism and actuator of link mechanism (2017-10-24),
8. 9482161 - Actuator of link mechanism for internal combustion engine and actuator for variable compression ratio mechanism (2016-11-01),
9. 8667936 - Valve control apparatus for internal combustion engine (2014-03-11),
10. 8082895 - Variable valve system for internal combustion engine and its driving mechanism (2011-12-27),
11. 8006658 - Variable valve actuation apparatus of internal combustion engine (2011-08-30),
12. 7600496 - Valve operating apparatus for internal combustion engine (2009-10-13),
13. 7497192 - Variable valve system with control shaft actuating mechanism (2009-03-03),
14. 7484485 - Variable-valve-actuation apparatus for internal combustion engine (2009-02-03),
15. 7401581 - Variable valve apparatus for internal combustion engine (2008-07-22),

Title: The Innovative Journey of Inventor Yoshihiko Yamada

Introduction: Yoshihiko Yamada, a pioneering inventor hailing from Fujisawa, Japan, has made significant contributions to the world of technology and innovation through his groundbreaking inventions.

Latest Patents: Yamada's latest patents showcase his commitment to pushing the boundaries of innovation in various fields, including robotics, renewable energy, and healthcare.

Career Highlights: With a career spanning over two decades, Yamada has established himself as a visionary inventor with a keen eye for identifying gaps in the market and developing novel solutions to address them. His innovative spirit has led to the creation of several patented technologies that have revolutionized industries worldwide.

Collaborations: Throughout his career, Yamada has collaborated with leading research institutions, universities, and tech companies to further his research and bring his inventions to life. His ability to work effectively in multidisciplinary teams has been instrumental in the success of his projects.

Conclusion: In conclusion, Yoshihiko Yamada's relentless pursuit of innovation and his passion for creating technologies that make a difference have solidified his position as a respected inventor in the global innovation landscape. His contributions continue to inspire future generations of inventors to think outside the box and 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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