Forward Citations = 78

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2 inventors (with patents filed for the assignee):

Helmut A Heine (1 out of 30 patents)

Werner Theissig (1 out of 8 patents)

1 patent: Sort by Forward Citations

1. 4675919 - Headband with cushion (1987-06-30),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

1 Patents

#90 in Long Island City, NY

#8,665 in New York

#136,919 in US

Long Island City, NY, United States of America

Proper Manufacturing Co. Inc.

Forward Citations = 78

2 inventors:

Helmut A Heine (1 out of 30 patents)

Werner Theissig (1 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Proper Manufacturing Co. Inc.. Retrieved from https://idiyas.com/company/proper-manufacturing-company

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]