Terry A Keifer (2 out of 3 patents)
Company Badge
USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#43 in King of Prussia, PA
#3,432 in Pennsylvania
#94,953 in US
Check Mate Systems, Inc.
Forward Citations = 69
1 inventor:
King of Prussia, PA, United States of America
Check Mate Systems, Inc.
Calculating rank
Trademarks = 1
Forward Citations = 69
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1 inventor (with patents filed for the assignee):
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Check Mate Systems, Inc.. Retrieved from https://idiyas.com/company/check-mate-systems
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]