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USPTO Data Jan 1 1976 - Oct 20 2026
2 Patents
#228 in Bellevue, WA
#2,346 in Washington
#94,905 in US
Penwest, Ltd.
Forward Citations = 16
5 inventors:
Bellevue, WA, United States of America
Penwest, Ltd.
CIPO Patents = 1
Trademarks = 1
Forward Citations = 16
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5 inventors (with patents filed for the assignee):
Bill L Miller (1 out of 66 patents)
Wallace H Kunerth (1 out of 2 patents)
James M Quarles (1 out of 5 patents)
4. Ian Lewis Brown (1 out of 2 patents)
5. Duane Tackaberry (1 out of 1 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Penwest, Ltd.. Retrieved from https://idiyas.com/company/penwest
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]
1 patent (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]
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]