Forward Citations = 53

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4 inventors (with patents filed for the assignee):

Teddy J Hirsch (1 out of 2 patents)

Lincoln C Cobb (1 out of 1 patent)

Raymond A Wardell (1 out of 1 patent)

4. Lincoln C Cobb (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5054954 - Roadway barrier (1991-10-08),

2. 4423854 - Roadway barrier (1984-01-03),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#591 in Toronto

#6,019 in Canada

Toronto, Canada

International Barrier Corporation

Forward Citations = 53

4 inventors:

Teddy J Hirsch (1 out of 2 patents)

Lincoln C Cobb (1 out of 1 patent)

Raymond A Wardell (1 out of 1 patent)

4. Lincoln C Cobb (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: International Barrier Corporation. Retrieved from https://idiyas.com/company/international-barrier

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]