Forward Citations = 63

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3 inventors (with patents filed for the assignee):

Vernon R Fencl (9 out of 13 patents)

Laszlo J Javorik (4 out of 5 patents)

Archie Tan (2 out of 2 patents)

11 patents: Sort by Forward Citations

1. 4975556 - Butt welding machine (1990-12-04),

2. 4722216 - Radial forging method (1988-02-02),

3. 4685323 - Method for increasing the buckling load capacity and the comprehensive (1987-08-11),

4. 4590655 - Method for expanding a tubular member (1986-05-27),

5. 4562326 - Machine for welding automotive wheel rim blanks (1985-12-31),

6. 4559482 - Automotive rim roll forming drive system (1985-12-17),

7. 4472959 - Removable multi-die cartridge for shrink forming machine (1984-09-25),

8. 4357561 - Automotive rim roll forming drive system (1982-11-02),

9. 4320327 - Automotive rim roll forming drive system (1982-03-16),

10. 4316377 - Roll forging machine (1982-02-23),

11. 4306437 - System for planishing metal pipe (1981-12-22),

Company Overview

Grotnes Metalforming Systems, Inc. is a prominent player in the metal forming industry, specializing in the design and manufacture of advanced metal forming equipment and systems. With a focus on innovation, the company develops solutions that enhance efficiency and precision in metal processing. Operating from its headquarters in Chicago, IL, Grotnes serves a diverse range of sectors, including automotive and aerospace, leveraging cutting-edge technology to meet the evolving needs of its clients.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

11 Patents

#325 in Chicago, IL

#1,336 in Illinois

#27,529 in US

#51,801 in the World

Chicago, IL, United States of America

Grotnes Metalforming Systems, Inc.

Forward Citations = 63

3 inventors:

Vernon R Fencl (9 out of 13 patents)

Laszlo J Javorik (4 out of 5 patents)

Archie Tan (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Grotnes Metalforming Systems, Inc.. Retrieved from https://idiyas.com/company/grotnes-metalforming-systems

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]