Saitama, Japan

Kouichi Tsutsumi

This inventor holds 3 USPTO granted patents. Top assignee: Honda Giken Kogyo Kabushiki Kaisha. Active years: 2001-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouichi Tsutsumi. Retrieved from https://idiyas.com/inventor/kouichi-tsutsumi

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 = 4.5

ph-index = 2

Forward Citations = 21(Granted Patents)


Company Filing History:


Years Active: 2001-2002

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3 patents (USPTO):Explore Patents

Title: The Innovations of Kouichi Tsutsumi

Introduction

Kouichi Tsutsumi is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of engine technology, holding a total of 3 patents. His work primarily focuses on lubrication systems and crankshaft rotation structures for four-cycle engines.

Latest Patents

One of Tsutsumi's latest patents is a lubrication structure for a four-cycle engine. This innovative lubrication system includes an oil discharge port located in the lower section of the crankcase. The design features a crankshaft that rotates within the crankcase, with specific distances formed between the crank web and the inner surfaces of the crankcase. The back edge of the oil discharge port is wedge-shaped, allowing it to scoop oil from the crank web effectively.

Another significant patent is the crankshaft rotation structure for a four-cycle engine. This structure incorporates a radial ball bearing and a radial roller bearing, which support the crankshaft's rotation. Additionally, an oil jet nozzle is included for cooling the piston, allowing for a more compact engine design.

Career Highlights

Kouichi Tsutsumi is currently employed at Honda Giken Kogyo Kabushiki Kaisha, a leading automotive manufacturer. His work at Honda has allowed him to develop and refine his innovative ideas, contributing to advancements in engine technology.

Collaborations

Throughout his career, Tsutsumi has collaborated with notable colleagues such as Nobuaki Inumaru and Osamu Kudou. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Kouichi Tsutsumi's contributions to engine technology through his patents and work at Honda highlight his innovative spirit and dedication to improving automotive engineering. His inventions continue to influence the industry and pave the way for future advancements.

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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