Forward Citations = 58

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4 inventors (with patents filed for the assignee):

Kenneth W Hotchkiss (3 out of 11 patents)

John A Popken (1 out of 7 patents)

George A Kopp, Sr (1 out of 1 patent)

4. Nellie S Griffith (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4449015 - Connector cover with multiple mounting means (1984-05-15),

2. 4104703 - Terminal block cover for covering block and space between adjacent blocks (1978-08-01),

3. 3966074 - Terminal box and cover (1976-06-29),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#303 in Boulder, CO

#1,778 in Colorado

#73,860 in US

Boulder, CO, United States of America

Proto Production Plastics, Inc.

Forward Citations = 58

4 inventors:

Kenneth W Hotchkiss (3 out of 11 patents)

John A Popken (1 out of 7 patents)

George A Kopp, Sr (1 out of 1 patent)

4. Nellie S Griffith (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Proto Production Plastics, Inc.. Retrieved from https://idiyas.com/company/proto-production-plastics

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]