Forward Citations = 20

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5 inventors (with patents filed for the assignee):

Masayuki Sayama (1 out of 14 patents)

Osamu Ishikawa (1 out of 10 patents)

Hayashi Kageyama (1 out of 1 patent)

4. Takao Tashiro (1 out of 3 patents)

5. Makoto Hagiwara (1 out of 3 patents)

4 patents: Sort by Forward Citations

1. 6095923 - Propeller shaft (2000-08-01),

2. 5616096 - Differential gear unit (1997-04-01),

3. 4983150 - Differential gear apparatus with differential limitation mechanism (1991-01-08),

4. 4940123 - Viscous coupling (1990-07-10),

Company Overview

Viscodrive Japan Ltd. is a leading provider of innovative drive solutions for a wide range of applications. Specializing in precision planetary gearboxes and drive systems, our products are known for their high performance, reliability, and efficiency. With a strong focus on customer satisfaction and technical expertise, we strive to exceed our clients' expectations and deliver superior drive solutions for their specific needs.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

4 Patents

#211 in undefined, undefined

#560 in

#60,641 in US

US

Viscodrive Japan Ltd.

Forward Citations = 20

5 inventors:

Masayuki Sayama (1 out of 14 patents)

Osamu Ishikawa (1 out of 10 patents)

Hayashi Kageyama (1 out of 1 patent)

4. Takao Tashiro (1 out of 3 patents)

5. Makoto Hagiwara (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Viscodrive Japan Ltd.. Retrieved from https://idiyas.com/company/viscodrive-japan

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]