For the Inventor, By the Inventor

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Chicago, IL, United States of America

Jac Operations, Inc.

USPTO Granted Patents = 23

CIPO Patents = 5

Trademarks = 11

Forward Citations = 56

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25 inventors (with patents filed for the assignee):

Gregory P Josephson (6 out of 6 patents)

Michael H Kress (6 out of 6 patents)

Greg P Josephson (4 out of 4 patents)

4. Christopher S Wissinger (3 out of 5 patents)

5. David A Lohr (3 out of 3 patents)

6. Douglas M Jenkins (2 out of 2 patents)

7. Stephen T Ling (2 out of 2 patents)

8. Dave Single (2 out of 2 patents)

9. William Thompson (2 out of 2 patents)

10. Glenn J Fowler (2 out of 2 patents)

11. Keith Alan Miller (2 out of 4 patents)

12. Jeff Boring (2 out of 2 patents)

13. Dave Lohr (2 out of 2 patents)

14. Michael A Selapack (2 out of 5 patents)

15. Todd L Lydic (2 out of 15 patents)

23 patents: Sort by Forward Citations

1. 12459549 - Method and cast components for cold formed center sill rail car modification programs and railcars formed thereby (2025-11-04),

2. 12054183 - Open top gondola railcar (2024-08-06),

3. 11958509 - Hopper railcar with door deflector for transverse pivoted outlet gate, door deflector and method of retrofitting hopper railcar to include door deflector for transverse pivoted outlet gate (2024-04-16),

4. 11945476 - Railcar cold formed center sill with stiffness enhancing structure (2024-04-02),

5. 11702115 - Reinforced railcar side stake (2023-07-18),

6. 11554797 - Handheld solenoid activation remote for a railroad car door (2023-01-17),

7. 11492023 - Transverse trough coil car and slab car with integral adjustable lateral coil stops, vertical trough height adjustment and width adjustable fixed stanchions (2022-11-08),

8. 11338831 - Railcar having cold formed center sill with stiffness enhancing structure (2022-05-24),

9. 10737705 - Reinforced railcar side stake (2020-08-11),

10. 10710612 - Gondola car clean-out door (2020-07-14),

11. 10589757 - Coil railcar with floating floor sheet (2020-03-17),

12. 10486719 - Railroad coupler knuckle with external weight reducing features and method of forming the same (2019-11-26),

13. 10336347 - Railroad well car with open truss sides (2019-07-02),

14. 10315667 - Railroad coil car floating floor sheet (2019-06-11),

15. 10300931 - Multi-unit intermodal railroad well car with safety platform and handbrake (2019-05-28),

JAC OPERATIONS, INC. is a leading provider of operational solutions. We offer a wide range of services, including project management, consulting, and logistics support. With over 10 years of experience, we have built a reputation for delivering exceptional results and exceeding client expectations. Visit our website to learn more about our company and the services we provide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

23 Patents

#175 in Chicago, IL

#720 in Illinois

#13,932 in US

#26,805 in the World

Chicago, IL, United States of America

Jac Operations, Inc.

Forward Citations = 56

25 inventors:

Gregory P Josephson (6 out of 6 patents)

Michael H Kress (6 out of 6 patents)

Greg P Josephson (4 out of 4 patents)

4. Christopher S Wissinger (3 out of 5 patents)

5. David A Lohr (3 out of 3 patents)

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