For the Inventor, By the Inventor

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Crystal Lake, IL, United States of America

Metrom Rail, LLC

USPTO Granted Patents = 21

% Expired Patents = 9.5

Trademarks = 3

Forward Citations = 76

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8 inventors (with patents filed for the assignee):

Kurt A Gunther (21 out of 22 patents)

Richard C Carlson (14 out of 16 patents)

Marc Wayne Cygnus (12 out of 13 patents)

4. Sara Jo Woitel (9 out of 10 patents)

5. Peter Strezev (5 out of 6 patents)

6. John Albert Plutt, Jr (5 out of 6 patents)

7. Richard E Carlson (3 out of 5 patents)

8. John K Devos (1 out of 1 patent)

21 patents: Sort by Forward Citations

1. 12473002 - Methods and systems for ultra-wideband (UWB) based navigation of arbitrary paths based on reference markers (2025-11-18),

2. 12420848 - Methods and systems for achieving vital ultra-wideband (UWB) based train control (2025-09-23),

3. 12397832 - Rail vehicle signal enforcement and separation control (2025-08-26),

4. 12379479 - Methods and systems for ultra-wideband (UWB) based subway personnel detection (2025-08-05),

5. 12258058 - Rail vehicle signal enforcement and separation control (2025-03-25),

6. 12122436 - Methods and systems for worker protection system with ultra-wideband (UWB) based anchor network (2024-10-22),

7. 11965952 - Methods and systems for ultra-wideband (UWB) based subway personnel detection (2024-04-23),

8. 11952028 - Methods and systems for achieving vital ultra-wideband (UWB) based train control (2024-04-09),

9. 11814088 - Vehicle host interface module (vHIM) based braking solutions (2023-11-14),

10. 11780481 - Methods and systems for worker protection system with ultra-wideband (UWB) based anchor network (2023-10-10),

11. 11700075 - Methods and systems for decentralized rail signaling and positive train control (2023-07-11),

12. 11492027 - Methods and systems for worker protection system with ultra-wideband (UWB) based anchor network (2022-11-08),

13. 11349589 - Methods and systems for decentralized rail signaling and positive train control (2022-05-31),

14. 10778363 - Methods and systems for decentralized rail signaling and positive train control (2020-09-15),

15. 10737709 - Worker protection system (2020-08-11),

Metrom Rail, LLC is a specialized engineering firm based in Crystal Lake, Illinois, focusing on the development and manufacturing of advanced rail systems and components. The company is dedicated to enhancing rail infrastructure through innovative solutions that improve safety, efficiency, and sustainability in transportation. With expertise in railway technology, Metrom Rail engages in research and development to address the evolving needs of the rail industry, contributing to modern transit solutions across various regions.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

21 Patents

#6 in Crystal Lake, IL

#811 in Illinois

#15,668 in US

#29,893 in the World

Crystal Lake, IL, United States of America

Metrom Rail, LLC

Forward Citations = 76

8 inventors:

Kurt A Gunther (21 out of 22 patents)

Richard C Carlson (14 out of 16 patents)

Marc Wayne Cygnus (12 out of 13 patents)

4. Sara Jo Woitel (9 out of 10 patents)

5. Peter Strezev (5 out of 6 patents)

Please report any incorrect information to [email protected]

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