Chita, Japan

Tsutomu Yoshikawa

This inventor holds 6 USPTO granted patents. Top assignees: Denso Corporation, Nippondenso Co., Ltd., Nippondenso Corporation. Active years: 1997-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Yoshikawa. Retrieved from https://idiyas.com/inventor/tsutomu-yoshikawa

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 = 3.4

ph-index = 4

Forward Citations = 33(Granted Patents)


Company Filing History:


Years Active: 1997-2001

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6 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Tsutomu Yoshikawa

Introduction

Tsutomu Yoshikawa is a notable inventor based in Chita-gun, Japan. He has made significant contributions to the field of vehicle instrumentation, holding a total of six patents. His work has been influential in enhancing the functionality and design of vehicle indicators.

Latest Patents

Among his latest patents is an innovative indicating instrument for vehicles. This invention features a straight cold cathode fluorescent lamp that is detachably held at the back of a dial plate by a plurality of fork-shaped holders. This design illuminates various scales formed on the front surface of the dial plate and is accommodated in a reflector that is also detachably fixed to the casing of the indicator instrument. Additionally, a circuit board is detachably fixed to the reflector, showcasing the thoughtful engineering behind his inventions.

Career Highlights

Tsutomu Yoshikawa has had a distinguished career, working with prominent companies such as Denso Corporation and Nippondenso Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in automotive technology.

Collaborations

Throughout his career, Yoshikawa has collaborated with talented individuals, including Tadaaki Ishimaru and Teruaki Araki. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.

Conclusion

Tsutomu Yoshikawa's contributions to vehicle instrumentation through his patents and collaborations highlight his role as a significant inventor in the automotive industry. His innovative designs continue to influence the way vehicle indicators are developed and utilized.

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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