Sumitomo Riko Company Limited, headquartered in Aichi, Japan, specializes in the development and manufacturing of advanced vibration damping devices. The company focuses on a range of core technologies, including fuel cells, thermal insulation materials, and various mechanical components such as rubber bushings and hydraulic bearings. With a commitment to innovation, Sumitomo Riko plays a significant role in enhancing performance and reliability across multiple industries, including automotive and industrial applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

374 Patents

#7 in Aichi

#458 in Japan

#2,472 in the World

Aichi, Japan

Sumitomo Riko Company Limited

Forward Citations = 469

489 inventors:

Takayoshi Yasuda (15 out of 23 patents)

Koichi Hasegawa (14 out of 56 patents)

Katsuhiko Nakano (13 out of 14 patents)

4. Tomohiro Kanaya (13 out of 19 patents)

5. Koji Tomiyama (12 out of 12 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Riko Company Limited. Retrieved from https://idiyas.com/company/sumitomo-riko-company

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

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]

3 patents (CIPO):

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]

101 patents (EPO):

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]