Wako, Japan

Koji Katsumata

This inventor holds 1 USPTO granted patent. Top assignee: Honda Motor Co., Ltd.. Active years: 2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Katsumata. Retrieved from https://idiyas.com/inventor/koji-katsumata-bwjehg6s

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 = 8.0

ph-index = 1


Company Filing History:


Years Active: 2020

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1 patent (USPTO):Explore Patents

Title: Koji Katsumata and His Engine Valve Operating System.

Introduction

Koji Katsumata is an inventor associated with Wako, Japan, and Honda Motor Co., Ltd. His patent work includes an innovation in valve operation for multicylinder engines.

Latest Patents

Katsumata is credited with 1 patent, titled “Valve Operating System for Multicylinder Engine.” The invention uses a pair of rocker arms, operated by a cam on a camshaft, to open and close a pair of valves on each cylinder. In at least one cylinder, the rocker arms are inclined in opposite directions relative to the direction perpendicular to the camshaft axis. This arrangement counteracts thrust loads on the camshaft, helping reduce those loads and prevent axial movement.

Career Highlights

Katsumata’s documented patent contribution addresses a mechanical challenge in multicylinder engine design: managing the forces applied to a camshaft during valve operation. The patent identifies Honda Motor Co., Ltd. as his company affiliation.

Collaborations

The provided information names Masaru Kawano and Koichi Ogino as Katsumata’s coworkers. It does not specify their roles in the patent or describe particular collaborations.

Conclusion

Koji Katsumata’s patent presents a rocker-arm arrangement designed to reduce camshaft thrust and limit axial movement, reflecting a focused contribution to engine valve-system 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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