Kanagawa, Japan

Hiroyuki Kawanishi

This inventor holds 20 USPTO granted patents and 5 published patent applications, primarily in Optical Film Technology. Top assignees: Fujifilm Corporation, Isuzu Motors Limited, Fuji Photo Film Company, Limited. Active years: 1990-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Kawanishi. Retrieved from https://idiyas.com/inventor/hiroyuki-kawanishi

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

Calculating rank
USPTO Granted Patents = 20 

% Patents Active = 50.0

Average Co-Inventor Count = 2.6

ph-index = 6

Forward Citations = 89(Granted Patents)


Location History:

  • Wako, JP (1990)
  • Fujisawa, JP (1999 - 2011)
  • Minami-Ashigara, JP (2006 - 2012)
  • Kanagawa, JP (2005 - 2014)

Company Filing History:


Years Active: 1990-2014

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Areas of Expertise:
Optical Film
Liquid Crystal Display
Polarizing Plate
Flow Control Valve
Actuator Control
Phase Difference Plate
Optical Compensation Film
Polymer Film
Clutch Control
Cellulose Acylate Film
Vehicle Structure
Solenoid
20 patents (USPTO):Explore Patents

Title: Innovations and Contributions of Hiroyuki Kawanishi

Introduction: Hiroyuki Kawanishi, a notable innovator from Kanagawa, Japan, has made significant strides in the field of actuator and clutch control technologies. With an impressive portfolio of 20 patents, Kawanishi's work showcases his commitment to advancing engineering solutions.

Latest Patents: Among his latest inventions are two significant patents that address critical challenges in actuator and clutch control. The first patent is a "Device for Controlling the Stroke of an Actuator." This innovation focuses on a feedback control device that accurately regulates the stroke of an actuator driven by a working fluid. It features a single flow rate control valve that manages the feed and discharge of the working fluid while compensating for secular changes in flow rate. A learning device is integrated, allowing the system to adapt to variations in the neutral position of the valve, enhancing performance through advanced feedback mechanisms.

The second patent is titled "Flow Rate Control Valve for Clutch Control Device," which pertains to a clutch control system used within vehicles. This invention includes a clutch actuator operated by a working fluid, a stroke sensor for movement detection, and a sophisticated flow rate control valve. The control device utilizes feedback from the stroke sensor to adjust the position of the valve body, thereby ensuring optimal control in power transmission devices.

Career Highlights: Hiroyuki Kawanishi has held key positions in two leading companies in Japan. He contributed to the innovation at Fujifilm Corporation and later continued to make advancements at Isuzu Motors Limited, where he applied his expertise in actuator and clutch technologies.

Collaborations: Throughout his career, Kawanishi has collaborated with distinguished professionals such as Yasushi Yamamoto and Hiroaki Sata. These partnerships have played a crucial role in the development of his innovative technologies and have strengthened the impact of his work in the industry.

Conclusion: Hiroyuki Kawanishi's contributions to the field of actuator and clutch control are invaluable. His 20 patents reflect a deep understanding of engineering challenges and offer sophisticated solutions to enhance vehicle performance. As technology continues to evolve, Kawanishi's innovations will undoubtedly play a pivotal role in shaping future advancements in the automotive and engineering sectors.

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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