Yokohama, Japan

Eiji Endoh

This inventor holds 26 USPTO granted patents and 1 published patent application, plus 2 CIPO patents and 1 EPO patent, primarily in Polymer Electrolyte Fuel Cells. Top assignees: Asahi Glass Company, Limited, Elna Co., Ltd., Agc Inc.. Active years: 1981-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Endoh. Retrieved from https://idiyas.com/inventor/eiji-endoh

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

USPTO Granted Patents = 26 

% Patents Active = 92.3



Average Co-Inventor Count = 2.8

ph-index = 9

Forward Citations = 207(Granted Patents)


Location History:

  • Kanagawa, JP (2005)
  • Tokyo, JP (2017)
  • Yokohama, JP (1981 - 2021)

Company Filing History:


Years Active: 1981-2021

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Areas of Expertise:
Polymer Electrolyte Fuel Cells
Membrane-Electrode Assembly
Electrolyte Membrane
Liquid Composition
Solid Polymer Fuel Cell
Electrolytic Capacitor
Photocatalyst Composition
Electrode Production
Water Electrolysis
Durable Cathode
Low Hydrogen Overvoltage
Anode
26 patents (USPTO):Explore Patents

Title: Eiji Endoh – Innovator in Polymer Electrolyte Fuel Cells

Introduction

Eiji Endoh, based in Yokohama, Japan, is a prolific inventor with an impressive portfolio of 26 patents. His work primarily focuses on advancing fuel cell technology, specifically through innovations in the production of polymer electrolyte fuel cells. His contributions are significant in enhancing energy efficiency and power generation performance.

Latest Patents

One of Eiji Endoh's latest patents involves a liquid composition and a process for its production, which can be utilized to create a membrane-electrode assembly for polymer electrolyte fuel cells. This innovative electrolyte membrane is crafted from a unique liquid composition that includes trivalent cerium, tetravalent cerium, bivalent manganese, or trivalent manganese combined with a polymer featuring a cation-exchange group. The invention details a process that utilizes water and cerium or manganese carbonates to produce a cast film used as the electrolyte membrane. This pioneering approach enables the membrane-electrode assembly to generate electric power with high energy efficiency, consistent performance, and stability, irrespective of the dew point of the feed gas.

Career Highlights

Eiji Endoh has made notable contributions during his tenure at distinguished companies such as Asahi Glass Company, Limited and Elna Co., Ltd. His innovative spirit and technical expertise have propelled advancements in material sciences and energizing solutions.

Collaborations

Throughout his career, Eiji has collaborated with esteemed colleagues, including Yoshio Oda and Hiroshi Otouma. These partnerships have fostered a collaborative environment that fuels creativity and leads to groundbreaking inventions in the field of energy technologies.

Conclusion

Eiji Endoh stands out as a visionary inventor whose work has significantly impacted the realm of polymer electrolyte fuel cells. His latest patents exemplify his commitment to innovation, showcasing advanced techniques that aim to revolutionize energy generation. As the demand for efficient energy solutions continues to rise, Endoh's contributions pave the way for a sustainable future.

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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