Gunma, Japan

Toshihiko Tanuma

This inventor holds 3 USPTO granted patents. Top assignees: Sawafuji Electric Co., Ltd., Daihatsu Motor Company, Ltd.. Active years: 1989-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshihiko Tanuma. Retrieved from https://idiyas.com/inventor/toshihiko-tanuma

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 = 3.3

ph-index = 3

Forward Citations = 82(Granted Patents)


Company Filing History:


Years Active: 1989-1993

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3 patents (USPTO):Explore Patents

Title: The Innovations of Toshihiko Tanuma

Introduction

Toshihiko Tanuma is a notable inventor based in Gunma, Japan. He has made significant contributions to the field of engineering, particularly in welding and power generation technologies. With a total of three patents to his name, Tanuma's work reflects a commitment to innovation and practical solutions.

Latest Patents

Tanuma's latest patents include the D-C arc welding apparatus and an engine-driven power generating system. The D-C arc welding apparatus features an engine-driven welder that converts alternating current (A-C) power generated by an engine-driven alternator into direct current (D-C) power. This apparatus includes a battery-driven welder and a changeover switch that allows users to select between high-power and low-power modes. The engine-driven power generating system comprises a bridge circuit section with low-frequency and high-frequency switching elements. This system converts A-C voltage generated by an engine-driven A-C generator into D-C voltage, which is then transformed into a predetermined level of low-frequency A-C voltage. An emergency relay circuit device is included to protect the system against abnormal operating conditions.

Career Highlights

Throughout his career, Tanuma has worked with reputable companies such as Sawafuji Electric Co., Ltd. and Daihatsu Motor Company, Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Tanuma has collaborated with notable coworkers, including Shinji Kikuchi and Toshimichi Suzuki. Their combined efforts have likely fostered an environment of creativity and innovation in their respective projects.

Conclusion

Toshihiko Tanuma's contributions to engineering through his patents and collaborations highlight his role as a significant inventor in Japan. His work continues to influence advancements in welding and power generation technologies.

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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