Gunma, Japan

Shuji Chiba

This inventor holds 2 USPTO granted patents. Top assignee: Toshiba Silicone Co., Ltd.. Active years: 1990-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shuji Chiba. Retrieved from https://idiyas.com/inventor/shuji-chiba

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 2

Forward Citations = 18(Granted Patents)


Location History:

  • Gunma, JP (1990)
  • Tokyo, JP (1997)

Company Filing History:


Years Active: 1990-1997

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2 patents (USPTO):Explore Patents

Title: Innovator Shuji Chiba: Pioneering Silicone Rubber Technologies

Introduction: Shuji Chiba, an accomplished inventor based in Gunma, Japan, has made significant contributions to the field of silicone rubber technologies. With two patents to his name, Chiba's innovations demonstrate his dedication to advancing material science and enhancing manufacturing processes.

Latest Patents: Chiba's latest patents showcase his expertise in silicone compositions. The first patent is for a silicone rubber composition specifically designed for injection molding. This composition utilizes an addition reaction type silicone rubber, compounded with an azo compound and carbon black, alongside cerium hydroxide or cerium oxide. This innovative formulation results in silicone rubber moldings with a reduced compression set and excellent flame retardance, eliminating the need for post-curing after primary molding. Additionally, this invention enables integral molding of silicone rubber with thermoplastic resins.

The second patent involves a curable polyorganosiloxane composition. This formulation includes polyorganosiloxane with hydroxyl or hydrolyzable groups and caters to a range of viscosities. Furthermore, it incorporates an organosilicon compound with hydrolyzable groups and an organic peroxide, achieving both condensation reaction curability and ultraviolet ray curability. This versatility allows for enhanced application in various fields.

Career Highlights: Shuji Chiba is currently affiliated with Toshiba Silicone Co., Ltd., where he actively contributes to research and development efforts. His work at this esteemed company reflects his commitment to innovation and excellence in material science.

Collaborations: Throughout his career, Chiba has collaborated with notable professionals in the industry, including Tsuneo Motegi and Yasuji Matsumoto. These collaborations have fostered advancements in silicone technology and have significantly influenced the development of his patents.

Conclusion: Shuji Chiba's contributions to silicone rubber technology through his patents exemplify the spirit of innovation. As he continues to develop cutting-edge solutions at Toshiba Silicone Co., Ltd., his work is expected to shape the future of materials in various applications, solidifying his position as a leading inventor 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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