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For the Inventor, By the Inventor

Racine, WI, United States of America

Twin Disc Incorporated


USPTO Granted Patents = 75

% Expired Patents = 13.3



Trademarks = 1

Forward Citations = 1,124

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51 inventors (with patents filed for the assignee):

goldMedal Edwin Eugene Wilson (8 out of 15 patents)

silverMedal James B Black (8 out of 8 patents)

bronzeMedal Philip Rolla (7 out of 7 patents)

4.  Paul A Pelligrino (6 out of 8 patents)

5.  Raymond C Schneider (6 out of 6 patents)

6.  Horst G Steinhagen (5 out of 5 patents)

7.  Darrel A Jones (4 out of 4 patents)

8.  Joseph B Snoy (4 out of 4 patents)

9.  Ryan J Malloy (3 out of 34 patents)

10.  Gerald A Matranga (3 out of 3 patents)

11.  Andrew Clark (3 out of 3 patents)

12.  Dean J Bratel (3 out of 3 patents)

13.  George Reisch Aschauer (3 out of 8 patents)

14.  Joseph C Terranova (3 out of 3 patents)

15.  Basil White (3 out of 3 patents)


Core Competencies:
Power Transmission
Hydraulic Control
Marine Propulsion
Clutch Technologies
Industrial Drives
Pressure Pumping
Torque Converter
Heavy Duty Transmission
Fracturing Systems
Fluid Control
Electronic Control

75 patents:

1. 12636628 - Electrically driven oilfield blender system (2026-05-26),
2. 12491392 - Water and electrical supply system for firefighting (2025-12-09),
3. 12325301 - Hybrid industrial machine powertrain (2025-06-10),
4. 11891884 - Electro-hydraulic high-pressure oilfield pumping system (2024-02-06),
5. 11795799 - Compound electro-hydraulic frac pumping system (2023-10-24),
6. 11788395 - Oilfield pressure pumping system with slow speed and high pressure fracturing fluid output (2023-10-17),
7. 11761319 - Fracturing of a deep or wet well utilizing an air/fuel mixture and multiple stage restriction orifice assembly (2023-09-19),
8. 11346198 - Fracturing of a wet well utilizing an air/fuel mixture (2022-05-31),
9. 11187253 - Clutch stack wear sensor system for a power transmission device (2021-11-30),
10. 10914327 - Clutch stack wear sensor system for a power transmission device (2021-02-09),
11. 10865630 - Fracturing utilizing an air/fuel mixture (2020-12-15),
12. 10443690 - Heavy-duty industrial transmission (2019-10-15),
13. 10392915 - Fracturing utilizing an air/fuel mixture (2019-08-27),
14. 10359087 - Hydraulic power take-off with brake disconnect system for industrial drives (2019-07-23),
15. 10316917 - Hydraulic power take-off with multiple-force brake system for industrial drives (2019-06-11),
Twin Disc Incorporated is a global leader in power transmission technology and equipment. Established in 1918, the company designs, manufactures, and sells marine and industrial products. Their innovative solutions include transmissions, propulsion systems, control technology, and aftermarket support. Twin Disc serves a wide range of industries, including marine, construction, agriculture, energy, and transportation. With a commitment to quality and customer satisfaction, Twin Disc continues to drive advancements in power transmission technology worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

Twin Disc Incorporated
75 Patents

#12 in Racine, WI

#112 in Wisconsin

#4,895 in US

#9,983 in the World

Racine, WI (US)
Racine, WI, United States of America

Twin Disc Incorporated

Forward Citations = 1,124

51 inventors:

goldMedal Edwin Eugene Wilson (8 out of 15 patents)

silverMedal James B Black (8 out of 8 patents)

bronzeMedal Philip Rolla (7 out of 7 patents)

4.  Paul A Pelligrino (6 out of 8 patents)

5.  Raymond C Schneider (6 out of 6 patents)

Please report any incorrect information to [email protected]
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