Chiba, Japan

Kouji Kubo

This inventor holds 2 USPTO granted patents. Top assignee: Sumitomo Chemical Company, Limited. Active years: 1991-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kouji Kubo. Retrieved from https://idiyas.com/inventor/kouji-kubo-khdoru6v

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 = 2.7

ph-index = 1

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 1991-1994

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2 patents (USPTO):Explore Patents

Title: Innovations by Inventor Kouji Kubo from Chiba, Japan

Introduction: Kouji Kubo is an accomplished inventor based in Chiba, Japan, known for his innovative contributions to materials science. He holds two patents that showcase his expertise in developing advanced polymer-based products that prioritize safety and functionality.

Latest Patents: Kubo's latest patents include a specialized wallpaper and a silk-like polyethylene plastic film. The wallpaper patent involves a flame retardant paper laminated with an expanded resin sheet. This expanded sheet is created through a specific resin composition, offering high safety and meeting fireproof standards as a semi-noncombustible wall covering. It is designed to be free from plasticizer bleeding and offensive odors. Meanwhile, Kubo's silk-like film patent features a unique mixture of ethylene/methacrylate copolymers and polyethylene, resulting in a film that is non-reflective, opaque, and soft to the touch. This film is ideally suited for use in disposable rainwear, medical sheets, and other applications.

Career Highlights: Kouji Kubo is affiliated with Sumitomo Chemical Company, Limited, a leading organization in chemical manufacturing. His role within the company allows him to harness his skills in polymer research and development, contributing significantly to the advancement of innovative materials.

Collaborations: During his career, Kubo has worked alongside notable colleagues such as Shigeichi Kobayashi and Haruo Hayashida. Their collaboration not only highlights the importance of teamwork in innovation but also demonstrates the shared commitment to excellence in the field of material science.

Conclusion: Kouji Kubo is a distinguished inventor whose patents reflect a strong commitment to safety and innovation in materials. His ongoing work at Sumitomo Chemical Company, Limited, positions him as a significant contributor to the advancement of functional and safe materials in various industries.

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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