% Expired Patents = 100.0

Forward Citations = 4

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3 inventors (with patents filed for the assignee):

Haroon I Yunus (2 out of 3 patents)

Bumsuk Won (1 out of 2 patents)

Russel Hugh Marvin (1 out of 49 patents)

2 patents: Sort by Forward Citations

1. 7525781 - Snubber circuit (2009-04-28),

2. 7429841 - Method and apparatus for movable element position detection in an electrically commutated machine (2008-09-30),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#25 in Chanhassen, MN

#2,528 in Minnesota

#94,905 in US

Chanhassen, MN, United States of America

The Berquist Torrington Company

Forward Citations = 4

3 inventors:

Haroon I Yunus (2 out of 3 patents)

Bumsuk Won (1 out of 2 patents)

Russel Hugh Marvin (1 out of 49 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: The Berquist Torrington Company. Retrieved from https://idiyas.com/company/berquist-torrington-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]