Yokohama, Japan

Hajime Nishihara

This inventor holds 22 USPTO granted patents, primarily in Polymer Compositions. Top assignees: Asahi Kasei Kabushiki Kaisha, Asahi Kasei Kogyo Kabushiki Kaisha. Active years: 1992-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Nishihara. Retrieved from https://idiyas.com/inventor/hajime-nishihara

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

Calculating rank

% Patents Active = 95.5

Average Co-Inventor Count = 1.7

ph-index = 9

Forward Citations = 186(Granted Patents)


Location History:

  • Kanagawa, JP (1994)
  • Yokohama, JP (1992 - 2009)

Company Filing History:


Years Active: 1992-2009

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Areas of Expertise:
Olefinic Rubber
Thermoplastic Rubber
Elastomer Composition
Polycarbonate Resin
Flame Retardant
Rubbery Polymer
Softening Agent
Vinyl Terpolymer
Multi-layer Structure
Thermoplastic Copolymer
Fire Retardance
Flow Modifier
22 patents (USPTO):Explore Patents

Title: Hajime Nishihara: Innovator in Rubber Chemistry

Introduction: Hajime Nishihara is a prolific inventor based in Yokohama, Japan, holding an impressive total of 22 patents. His contributions to the field of rubber chemistry have significantly advanced the development of beneficial materials used in various applications.

Latest Patents: Among his latest innovations are two notable patents. The first is for an olefinic rubber composition that provides a process for creating a partially or completely crosslinked olefinic rubber composition. This composition consists of an ethylene-α-olefin copolymer and an olefinic resin, designed to enhance durability and performance in various applications. The second patent focuses on a thermoplastic crosslinked rubber composition, which combines a hydrogenated rubber obtained by modifying conjugated diene-type monomers and an olefinic thermoplastic resin, achieving distinct crystalline properties that improve product functionalities.

Career Highlights: Hajime Nishihara has had a notable career with significant contributions while working at reputable companies, including Asahi Kasei and Asahi Kasei Kogyo. His work in these organizations has paved the way for new advancements in rubber material technologies.

Collaborations: Throughout his career, Nishihara has collaborated with other talented individuals in the field, including Akihiro Watanabe and Katsuaki Maeda. These partnerships have fostered innovation and the successful development of their research into practical applications.

Conclusion: Hajime Nishihara's work stands as a testament to his innovative spirit and dedication to enhancing rubber technologies. His patents not only reflect his expertise but also contribute substantially to advancements in material science, ensuring a lasting impact on the industry.

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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