Ami, Japan

Etsuji Yamamoto

This inventor holds 3 USPTO granted patents. Top assignee: Mitsubishi Petrochemical Company Limited. Active years: 1986-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Etsuji Yamamoto. Retrieved from https://idiyas.com/inventor/etsuji-yamamoto-pf42ewyz

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 = 2.8

ph-index = 3

Forward Citations = 36(Granted Patents)


Company Filing History:


Years Active: 1986-1989

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3 patents (USPTO):Explore Patents

Title: Etsuji Yamamoto: Innovator in Composite Oxide Catalysts

Introduction

Etsuji Yamamoto is a notable inventor based in Ami, Japan. He has made significant contributions to the field of catalyst production, particularly in the development of composite oxide catalysts. With a total of 3 patents to his name, Yamamoto's work has had a considerable impact on the industry.

Latest Patents

Yamamoto's latest patents focus on innovative processes for the production of composite oxide catalysts. One of his patents describes a method for producing a Mo-Bi-Na composite oxide catalyst. This process involves incorporating compounds as respective element sources into a composite and subjecting it to heating treatment in an aqueous system. In this method, bismuth oxide and/or bismuth subcarbonate are utilized as a Bi source compound, with at least part of the heat treatment conducted at temperatures ranging from 450°C to 600°C. The introduction of Bi in the form of a specified water-insoluble compound significantly enhances the catalyst's activity. Another patent outlines a similar process, where a bismuth subcarbonate, in which part of the required Na has been solid-dissolved, is used as a Bi source compound. This method also improves the catalyst's activity by introducing Bi and Na in the form of the specified water-insoluble compound.

Career Highlights

Yamamoto is currently employed at Mitsubishi Petrochemical Company Limited, where he continues to innovate in the field of catalyst production. His work has been instrumental in advancing the technology and efficiency of composite oxide catalysts.

Collaborations

Yamamoto has collaborated with notable colleagues, including Kohei Sarumaru and Teruo Saito. Their combined expertise has contributed to the success of various projects and patents in the field.

Conclusion

Etsuji Yamamoto is a distinguished inventor whose work in composite oxide catalysts has led to significant advancements in the industry. His innovative processes and collaborations continue to shape the future of catalyst technology.

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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