For the Inventor, By the Inventor

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Chicago, IL, United States of America

Jac Operations, Inc.

USPTO Granted Patents = 26

CIPO Patents = 1

Trademarks = 4

Forward Citations = 57

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27 inventors (with patents filed for the assignee):

Gregory P Josephson (9 out of 9 patents)

Michael H Kress (8 out of 8 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. Cloyd Wirick (3 out of 3 patents)

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

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

9. Dave Single (2 out of 2 patents)

10. William Thompson (2 out of 2 patents)

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

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

13. Jeff Boring (2 out of 2 patents)

14. Dave Lohr (2 out of 2 patents)

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

Core Competencies:

Railcar Modifications

Cold Formed Center Sill

Modularization

Hopper Railcar

Transverse Trough Coil Car

Reinforced Side Stake

Open Top Gondola

Railroad Coupler

Intermodal Well Car

Safety Platform

Door Deflector

Remote Activation

26 patents: Sort by Forward Citations

1. 12715483 - Rail car modularized modification programs altering the nature of the center sill in the modified railcar and the modified railcars formed thereby (2026-08-25),

2. 12570333 - Covered hopper railcar (2026-03-10),

3. 12528521 - Railcar gate adaptor and railcar modification using the same (2026-01-20),

4. 12459549 - Method and cast components for cold formed center sill rail car modification programs and railcars formed thereby (2025-11-04),

5. 12054183 - Open top gondola railcar (2024-08-06),

6. 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),

7. 11945476 - Railcar cold formed center sill with stiffness enhancing structure (2024-04-02),

8. 11702115 - Reinforced railcar side stake (2023-07-18),

9. 11554797 - Handheld solenoid activation remote for a railroad car door (2023-01-17),

10. 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),

11. 11338831 - Railcar having cold formed center sill with stiffness enhancing structure (2022-05-24),

12. 10737705 - Reinforced railcar side stake (2020-08-11),

13. 10710612 - Gondola car clean-out door (2020-07-14),

14. 10589757 - Coil railcar with floating floor sheet (2020-03-17),

15. 10486719 - Railroad coupler knuckle with external weight reducing features and method of forming the same (2019-11-26),

Jac Operations, Inc. is a Chicago-based company specializing in advanced manufacturing solutions and engineering services. The organization focuses on providing innovative technologies and processes that enhance operational efficiency across various industries. With expertise in automation, robotics, and supply chain optimization, Jac Operations aims to deliver tailored solutions that meet the evolving needs of its clients. The company's commitment to research and development positions it as a leader in driving technological advancements in manufacturing.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

26 Patents

#166 in Chicago, IL

#675 in Illinois

#12,850 in US

#24,781 in the World

Chicago, IL, United States of America

Jac Operations, Inc.

Forward Citations = 57

27 inventors:

Gregory P Josephson (9 out of 9 patents)

Michael H Kress (8 out of 8 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)

Please report any incorrect information to [email protected]

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