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USPTO Data Jan 1 1976 - Oct 20 2026
2 Patents
#291 in Indianapolis, IN
#1,327 in Indiana
#94,905 in US
Calumet Penreco, LLC
Forward Citations = 4
6 inventors:
Indianapolis, IN, United States of America
Calumet Penreco, LLC
% Expired Patents = 50.0
Trademarks = 1
Forward Citations = 4
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6 inventors (with patents filed for the assignee):
Steluta Gina Butuc (1 out of 2 patents)
David S Morrison (1 out of 9 patents)
Lin Lu Healy (1 out of 1 patent)
4. Jack C Cunningham, Jr (1 out of 1 patent)
5. Wei Song (1 out of 10 patents)
6. Gina Butuc (1 out of 1 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Calumet Penreco, LLC. Retrieved from https://idiyas.com/company/calumet-penreco
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]
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]