Hitachi, Japan

Nobutoshi Chikazumi

This inventor holds 2 USPTO granted patents. Top assignee: Hitachi Chemical Company, Ltd.. Active years: 1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobutoshi Chikazumi. Retrieved from https://idiyas.com/inventor/nobutoshi-chikazumi

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 = 2.4

ph-index = 2

Forward Citations = 12(Granted Patents)


Company Filing History:


Years Active: 1982

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2 patents (USPTO):Explore Patents

Title: Nobutoshi Chikazumi: Innovator in Polymer Chemistry

Introduction

Nobutoshi Chikazumi is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the development of innovative methods and materials. With a total of 2 patents to his name, Chikazumi continues to push the boundaries of scientific research and application.

Latest Patents

Chikazumi's latest patents include a "Special solvent column for GPC" and a "Process for producing granular polymer having uniform fine particle size." The special solvent column for gel-permeation chromatography is packed with porous styrene-divinylbenzene type copolymer spherical particles. This innovative column allows for the analysis of a wider range of samples and enables rapid molecular-weight distribution measurement at normal temperatures. The second patent focuses on producing granular polymers with a uniform fine particle size as small as about 10 µm through suspension polymerization. This process enhances yield and efficiency in polymer production.

Career Highlights

Chikazumi is associated with Hitachi Chemical Company, Ltd., where he applies his expertise in polymer chemistry. His work has been instrumental in advancing the company's research and development initiatives. His innovative approaches have garnered attention in the scientific community, contributing to the evolution of polymer applications.

Collaborations

Chikazumi has collaborated with notable colleagues, including Yoshiyuki Mukoyama and Hatuo Sugitani. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and advancements in their respective fields.

Conclusion

Nobutoshi Chikazumi stands out as a key figure in polymer chemistry, with his innovative patents and contributions to Hitachi Chemical Company, Ltd. His work continues to influence the industry and inspire future innovations in the field.

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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