Fujisawa, Japan

Koichi Yoshihara

This inventor holds 7 USPTO granted patents. Top assignees: Nok Corporation, Freudenberg-Nok General Partnership, Suzuki Motor Corporation. Active years: 1996-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Yoshihara. Retrieved from https://idiyas.com/inventor/koichi-yoshihara

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.3

ph-index = 5

Forward Citations = 97(Granted Patents)


Company Filing History:


Years Active: 1996-2009

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7 patents (USPTO):Explore Patents

Title: Koichi Yoshihara: Innovator in Fluid Control Technologies

Introduction

Koichi Yoshihara is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of fluid control technologies, holding a total of 7 patents. His innovative designs focus on improving the efficiency and reliability of valve systems.

Latest Patents

Yoshihara's latest patents include a Float Valve and a Fluid Cutoff Valve Device. The Float Valve features a first valve port designed with a seal diameter smaller than that of a second valve port. This design allows for a reduced attachment force of the first valve body portion with respect to the valve seat, enabling the first valve port to open without increasing the weight of the float. Once the first valve port is opened, the pressure difference between the inside of a fuel tank and a connecting pipe is minimized, facilitating the reliable opening of the second valve body portion. The Fluid Cutoff Valve Device is designed to prevent excessive feed during a full-tank state by throttling the flow rate of fuel vapor before closing the float valve.

Career Highlights

Throughout his career, Koichi Yoshihara has worked with prominent companies such as Nok Corporation and Suzuki Motor Corporation. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Yoshihara has collaborated with talented individuals in the industry, including Kazuo Satoh and Takayuki Ota. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Koichi Yoshihara's work in fluid control technologies exemplifies the spirit of innovation. His patents reflect a commitment to enhancing the functionality and efficiency of valve systems. His contributions continue to influence the industry and inspire future inventors.

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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