Nagoya, Japan

Koji Kitagawa

This inventor holds 3 USPTO granted patents. Top assignee: Daido Metal Company Ltd.. Active years: 1996-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Kitagawa. Retrieved from https://idiyas.com/inventor/koji-kitagawa-rfnft7x9

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

Calculating rank

% Patents Active = 66.7

Average Co-Inventor Count = 5.1

ph-index = 2

Forward Citations = 30(Granted Patents)


Company Filing History:


Years Active: 1996-2004

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3 patents (USPTO):Explore Patents

Title: Koji Kitagawa: Innovator in Fuel Cell Technology

Introduction

Koji Kitagawa is a prominent inventor based in Nagoya, Japan. He has made significant contributions to the field of fuel cell technology, holding a total of 3 patents. His work focuses on improving the efficiency and performance of portable fuel cells.

Latest Patents

One of his latest patents is a portable fuel cell stack. This innovative design reduces the number of components by minimizing the flow field plates. It enhances cell performance by lowering internal resistance through fewer contact points. The fuel is supplied directly from the center of an end plate to a fuel distribution manifold. The stack consists of two end plates, multiple unit cells, and a central fuel distribution manifold. Additionally, a tie bolt integrates these components, ensuring a compact and efficient design. Another notable patent is a sliding bearing assembly that excels in fretting resistance. This assembly features a sliding bearing with a bearing alloy layer and a phosphate film composed of needle or columnar crystals, enhancing its durability.

Career Highlights

Koji Kitagawa is associated with Daido Metal Company Ltd., where he continues to innovate in the field of fuel cell technology. His work has garnered attention for its practical applications and advancements in energy efficiency.

Collaborations

He has collaborated with notable coworkers, including Eiji Kato and Yukio Naruse, contributing to various projects that enhance the company's technological capabilities.

Conclusion

Koji Kitagawa's contributions to fuel cell technology exemplify his commitment to innovation and efficiency. His patents reflect a deep understanding of engineering principles and a drive to improve energy solutions.

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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