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Buffalo, NY, United States of America

Gemcor Engineering Corp.

Calculating rank

USPTO Granted Patents = 39

Forward Citations = 701

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30 inventors (with patents filed for the assignee):

Bradley M Roberts (11 out of 14 patents)

Jeffrey P Weaver (8 out of 8 patents)

Mark J Andrews (8 out of 36 patents)

4. David Michalewski (8 out of 8 patents)

5. Thomas H Speller, Sr (7 out of 8 patents)

6. Robert J Kellner (6 out of 14 patents)

7. John W Davern (6 out of 8 patents)

8. Joseph A Dionne (5 out of 5 patents)

9. Ernest K Krell (4 out of 4 patents)

10. John W Zienkiewicz (4 out of 4 patents)

11. Mark F Cassidy, Jr (3 out of 4 patents)

12. James L Birke (3 out of 4 patents)

13. Thomas H Rummell (3 out of 3 patents)

14. Mark J Catania (3 out of 3 patents)

15. James J Birke (3 out of 3 patents)

Core Competencies:

Riveting Machine

Fastening Apparatus

Programmable Fixture

Tooling Positioning

Automatic Sealant Application

Coldworking Tool Automation

Multi-Position Rotary Head

High Energy Impact Riveting

Five Axis Riveter

Slug Riveting Method

Piston Rod Stabilizing Device

Jet Guide Rivet Injector

39 patents: Sort by Forward Citations

1. 5778505 - Apparatus for fastening a semi-cylindrical workpiece (1998-07-14),

2. 5687463 - Apparatus for positioning of tooling efficiently (1997-11-18),

3. 5661892 - Method for positioning tooling (1997-09-02),

4. 5653005 - Programmable fixture and assembly cell (1997-08-05),

5. 5647111 - Automatic sealant application apparatus and method (1997-07-15),

6. 5621970 - Method for positioning a wing panel for riveting (1997-04-22),

7. 5615474 - Automatic fastening machine with statistical process control (1997-04-01),

8. 5613395 - Coldworking tool automation (1997-03-25),

9. 5611130 - Multi-position rotary head apparatus (1997-03-18),

10. 5604974 - Apparatus for positioning a wing panel for riveting (1997-02-25),

11. 5575166 - High energy impact riveting apparatus and method (1996-11-19),

12. 5555616 - Method and apparatus for positioning of tooling efficiently (1996-09-17),

13. 5535498 - Hole probe method (1996-07-16),

14. 5477597 - Apparatus for positioning tooling (1995-12-26),

15. 5471865 - High energy impact riveting apparatus and method (1995-12-05),

Company Overview

Gemcor Engineering Corp. is a specialized engineering firm based in Buffalo, NY, focusing on the development and manufacturing of advanced aerospace components and systems. The company is recognized for its expertise in precision machining and assembly processes, catering primarily to the aerospace and defense sectors. Gemcor's innovative solutions enhance the efficiency and reliability of aircraft manufacturing, contributing to the advancement of aerospace technology and supporting the industry's stringent quality standards.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

39 Patents

#10 in Buffalo, NY

#542 in New York

#8,835 in US

#17,475 in the World

Buffalo, NY, United States of America

Gemcor Engineering Corp.

Forward Citations = 701

30 inventors:

Bradley M Roberts (11 out of 14 patents)

Jeffrey P Weaver (8 out of 8 patents)

Mark J Andrews (8 out of 36 patents)

4. David Michalewski (8 out of 8 patents)

5. Thomas H Speller, Sr (7 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Gemcor Engineering Corp.. Retrieved from https://idiyas.com/company/gemcor-engineering

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]

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