% Expired Patents = 100.0

Forward Citations = 5

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4 inventors (with patents filed for the assignee):

Gregory C Welch (2 out of 7 patents)

Douglas Wade Stephan (2 out of 9 patents)

Jenny S J McCahill (1 out of 1 patent)

4. Preston A Chase (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 8642812 - Frustrated Lewis pair compositions (2014-02-04),

2. 8299284 - Frustrated lewis pair compositions (2012-10-30),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#592 in Toronto

#6,024 in Canada

Toronto, Canada

Stephan Consulting Corporation

Forward Citations = 5

4 inventors:

Gregory C Welch (2 out of 7 patents)

Douglas Wade Stephan (2 out of 9 patents)

Jenny S J McCahill (1 out of 1 patent)

4. Preston A Chase (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stephan Consulting Corporation. Retrieved from https://idiyas.com/company/stephan-consulting

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]