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USPTO Data Jan 1 1976 - Nov 3 2026
2 Patents
#3 in Moreland Hills, OH
#3,646 in Ohio
#95,005 in US
Spirk; John W.
Forward Citations = 15
3 inventors:
Moreland Hills, OH, United States of America
Spirk; John W.
Calculating rank
Forward Citations = 15
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3 inventors (with patents filed for the assignee):
John W Spirk, Jr (2 out of 42 patents)
John Richard Nottingham (2 out of 246 patents)
Jeffrey S Plantz (2 out of 2 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Spirk; John W.. Retrieved from https://idiyas.com/company/spirk-john-w
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]