Kashiwa, Japan

Eiji Yokoyama

This inventor holds 4 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1979-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Yokoyama. Retrieved from https://idiyas.com/inventor/eiji-yokoyama-7dv3qv9a

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 = 3.8

ph-index = 4

Forward Citations = 122(Granted Patents)


Company Filing History:


Years Active: 1979-1989

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4 patents (USPTO):Explore Patents

Title: Eiji Yokoyama: Innovator in Hydrogen Technology

Introduction

Eiji Yokoyama is a prominent inventor based in Kashiwa, Japan. He has made significant contributions to the field of hydrogen technology, holding a total of four patents. His work focuses on improving the efficiency and responsiveness of power generation systems.

Latest Patents

Yokoyama's latest patents include a reformer designed for producing hydrogen-rich gas through the reaction of natural gas with steam. This invention emphasizes a heater with a dual heating section, utilizing both burner combustion and catalytic combustion to achieve stable combustion. Another notable patent is a power generator containing a fuel cell, which features a fuel supply mechanism that responds rapidly to changes in power load. This innovation ensures that the generator maintains output power without delays, enhancing its responsiveness to sudden increases in demand.

Career Highlights

Eiji Yokoyama is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to develop groundbreaking technologies that contribute to sustainable energy solutions. His inventions are pivotal in advancing hydrogen fuel cell technology, which is essential for the future of clean energy.

Collaborations

Yokoyama has collaborated with notable colleagues, including Yoshiaki Amano and Hideo Ohyauchi. These partnerships have fostered a creative environment that encourages innovation and the development of advanced technologies.

Conclusion

Eiji Yokoyama's contributions to hydrogen technology through his patents and work at Hitachi, Ltd. highlight his role as a key innovator in the field. His inventions are paving the way for more efficient and responsive 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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