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USPTO Data Jan 1 1976 - Oct 6 2026
1 Patents
#77 in Solon, OH
#5,264 in Ohio
#136,739 in US
Hdt Engineering Services, Inc.
Forward Citations = 23
3 inventors:
Solon, OH, United States of America
Hdt Engineering Services, Inc.
Trademarks = 2
Forward Citations = 23
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3 inventors (with patents filed for the assignee):
Ezra Johnson (1 out of 6 patents)
Thomas W Van Doren (1 out of 8 patents)
W Travis Lontz (1 out of 3 patents)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hdt Engineering Services, Inc.. Retrieved from https://idiyas.com/company/hdt-engineering-services
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]