Tokyo, Japan

Kiyohiko Toyama

This inventor holds 11 USPTO granted patents and 10 published patent applications and 2 EPO patents. Top assignees: Nec Corporation, Other. Active years: 2016-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyohiko Toyama. Retrieved from https://idiyas.com/inventor/kiyohiko-toyama

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

USPTO Granted Patents = 11 

% Patents Active = 100.0

 

Average Co-Inventor Count = 3.7

ph-index = 2

Forward Citations = 6(Granted Patents)


Company Filing History:

goldMedal11 out of 36,718 
 
Nec Corporation
 patents
silverMedal1 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 2016-2023

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11 patents (USPTO):Explore Patents

Title: Kiyohiko Toyama: Innovator in Cellulose Derivatives

Introduction

Kiyohiko Toyama is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of cellulose derivatives, holding a total of 11 patents. His innovative work focuses on developing new materials that enhance the properties of cellulose for various applications.

Latest Patents

Among his latest patents, Toyama has developed a cellulose derivative and resin composition for molding. This invention features a cellulose derivative that incorporates a long-chain organic group with five or more carbon atoms and a short-chain organic group with four or fewer carbon atoms. These groups are introduced using the hydroxy groups of cellulose, resulting in a unique crystal structure. Another notable patent is for a cellulose resin composition that includes an acylated cellulose and a lubricant. This composition is designed to create molded bodies with high-quality appearances and scratch resistance.

Career Highlights

Throughout his career, Kiyohiko Toyama has worked with notable companies, including NEC Corporation. His expertise in cellulose derivatives has positioned him as a key figure in the development of advanced materials.

Collaborations

Toyama has collaborated with esteemed colleagues such as Masatoshi Iji and Shukichi Tanaka. Their combined efforts have contributed to the advancement of cellulose-based technologies.

Conclusion

Kiyohiko Toyama's innovative work in cellulose derivatives has led to significant advancements in material science. His contributions continue to influence the industry and pave the way for future innovations.

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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