Toyota, Japan

Keizo Higashigawa

This inventor holds 4 USPTO granted patents. Top assignee: Toyota Jidosha Kogyo Kabushiki Kaisha. Active years: 1976-1983.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keizo Higashigawa. Retrieved from https://idiyas.com/inventor/keizo-higashigawa

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


% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 3

Forward Citations = 17(Granted Patents)


Location History:

  • Toyota, JA (1976)
  • Toyota, JP (1979 - 1983)

Company Filing History:


Years Active: 1976-1983

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4 patents (USPTO):Explore Patents

Title: Keizo Higashigawa: Innovator in Automotive Technology

Introduction

Keizo Higashigawa is a notable inventor based in Toyota, Japan. He has made significant contributions to automotive technology, holding a total of 4 patents. His work focuses on enhancing the efficiency and performance of carburetors, which are crucial components in internal combustion engines.

Latest Patents

Higashigawa's latest patents include an innovative anti-surge float chamber assembly. This invention defines a float chamber within a body that features an inlet passage for fluid supply and an outlet passage for fluid discharge. The float, which is mounted within the chamber, controls fluid flow through a valve, ensuring that the amount of fluid required for operation remains consistent, regardless of the chamber's tilt angle.

Another significant patent is the acceleration pump for a carburetor. This device incorporates first and second pump levers that are rockably secured to the carburetor body. The design allows for an ideal fuel flow curve, improving exhaust gas purification and enhancing vehicle drivability and acceleration. This innovation addresses the challenges of maintaining an optimal air/fuel ratio during vehicle acceleration.

Career Highlights

Keizo Higashigawa is currently employed at Toyota Jidosha Kogyo Kabushiki Kaisha, where he continues to develop cutting-edge automotive technologies. His work has been instrumental in advancing the performance and efficiency of carburetors, contributing to the overall improvement of vehicle engines.

Collaborations

Higashigawa has collaborated with notable coworkers, including Kazuo Shinoda and Ken Shiozawa. Their combined expertise has fostered a creative environment that encourages innovation and the development of new technologies in the automotive sector.

Conclusion

Keizo Higashigawa's contributions to automotive technology through his patents demonstrate his commitment to innovation and excellence. His work not only enhances vehicle performance but also plays a vital role in the evolution of automotive engineering.

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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