% Expired Patents = 50.0

Forward Citations = 36

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3 inventors (with patents filed for the assignee):

John Stuhr French (2 out of 11 patents)

Patrick Thomas Brennan (2 out of 2 patents)

Billy T Upchurch (2 out of 2 patents)

4 patents: Sort by Forward Citations

1. 9982475 - System and method for automatically closing a garage door (2018-05-29),

2. 9458657 - System and method for automatically closing a garage door (2016-10-04),

3. 4616045 - Process of preparing an oxygen permeable, styrene based, contact lens (1986-10-07),

4. 4528301 - Oxygen permeable, styrene based, contact lens material (1985-07-09),

Company Overview

GBF Corporation is a leading provider of innovative solutions in the field of construction, infrastructure, and engineering. With a focus on sustainability and technology, GBF Corporation offers a wide range of services including design, project management, and construction. Committed to delivering high-quality projects on time and within budget, GBF Corporation is known for its dedication to exceeding client expectations and fostering long-term relationships.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#70 in Elk Grove Village, IL

#2,841 in Illinois

#60,671 in US

Elk Grove Village, IL, United States of America

Gbf Corporation

Forward Citations = 36

3 inventors:

John Stuhr French (2 out of 11 patents)

Patrick Thomas Brennan (2 out of 2 patents)

Billy T Upchurch (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gbf Corporation. Retrieved from https://idiyas.com/company/gbf

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]