% Expired Patents = 100.0

Forward Citations = 4

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4 inventors (with patents filed for the assignee):

Wei Hu (1 out of 8 patents)

Eugene Cook (1 out of 1 patent)

Norman Mark Wereley (1 out of 21 patents)

4. Alan L Browne (1 out of 298 patents)

1 patent: Sort by Forward Citations

1. 7874407 - System and method for magnetorheological-fluid damping utilizing porous media (2011-01-25),

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USPTO Data Jan 1 1976 - Oct 13 2026

1 Patents

#97 in Warren, MI

#4,590 in Michigan

#136,844 in US

Warren, MI, United States of America

Gm Research & Development

Forward Citations = 4

4 inventors:

Wei Hu (1 out of 8 patents)

Eugene Cook (1 out of 1 patent)

Norman Mark Wereley (1 out of 21 patents)

4. Alan L Browne (1 out of 298 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gm Research & Development. Retrieved from https://idiyas.com/company/gm-research-and-development

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]