Headrick Manufacturing Co., Inc.

Calculating rank

USPTO Granted Patents = 2

Forward Citations = 165

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3 inventors (with patents filed for the assignee):

J Charles Headrick (2 out of 12 patents)

Robert T Ellingson (1 out of 23 patents)

Michael M Tull (1 out of 2 patents)

2 patents: Sort by Forward Citations

1. 5857291 - Astragal with integral sealing lock block (1999-01-12),

2. 5611173 - Continuous sidelight sill with adaptable threshold caps and removable (1997-03-18),

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USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#22 in Cumming, GA

#1,930 in Georgia

#94,953 in US

Cumming, GA, United States of America

Headrick Manufacturing Co., Inc.

Forward Citations = 165

3 inventors:

J Charles Headrick (2 out of 12 patents)

Robert T Ellingson (1 out of 23 patents)

Michael M Tull (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Headrick Manufacturing Co., Inc.. Retrieved from https://idiyas.com/company/headrick-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]