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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#8 in Fairfield, IA
#591 in Iowa
#94,953 in US
Harper Corporation
Forward Citations = 15
3 inventors:
Fairfield, IA, United States of America
Harper Corporation
Calculating rank
% Expired Patents = 50.0
Trademarks = 1
Forward Citations = 15
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3 inventors (with patents filed for the assignee):
Terrence Treacy (1 out of 11 patents)
David J Greubel (1 out of 1 patent)
Jeff Campbell (1 out of 1 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Harper Corporation. Retrieved from https://idiyas.com/company/harper
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]