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For the Inventor, By the Inventor

Racine, WI, United States of America

Twin Disc Incorporated


USPTO Granted Patents = 74



Trademarks = 16

Forward Citations = 1,107

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51 inventors (with patents filed for the assignee):

goldMedal James B Black (8 out of 8 patents)

silverMedal Philip Rolla (7 out of 7 patents)

bronzeMedal Edwin Eugene Wilson (7 out of 11 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 33 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:
Hybrid Powertrain
Electro-Hydraulic Pumping
Fracturing Fluid
Clutch Wear Sensor
Heavy-Duty Transmission
Marine Propulsion
Programmable Trim Control
Torque Transfer System
Hydraulic Power Take-Off
Multi-Speed Transmission
Synchronized Clutch
Waterjet Propulsion

74 patents:

1. 12491392 - Water and electrical supply system for firefighting (2025-12-09),
2. 12325301 - Hybrid industrial machine powertrain (2025-06-10),
3. 11891884 - Electro-hydraulic high-pressure oilfield pumping system (2024-02-06),
4. 11795799 - Compound electro-hydraulic frac pumping system (2023-10-24),
5. 11788395 - Oilfield pressure pumping system with slow speed and high pressure fracturing fluid output (2023-10-17),
6. 11761319 - Fracturing of a deep or wet well utilizing an air/fuel mixture and multiple stage restriction orifice assembly (2023-09-19),
7. 11346198 - Fracturing of a wet well utilizing an air/fuel mixture (2022-05-31),
8. 11187253 - Clutch stack wear sensor system for a power transmission device (2021-11-30),
9. 10914327 - Clutch stack wear sensor system for a power transmission device (2021-02-09),
10. 10865630 - Fracturing utilizing an air/fuel mixture (2020-12-15),
11. 10443690 - Heavy-duty industrial transmission (2019-10-15),
12. 10392915 - Fracturing utilizing an air/fuel mixture (2019-08-27),
13. 10359087 - Hydraulic power take-off with brake disconnect system for industrial drives (2019-07-23),
14. 10316917 - Hydraulic power take-off with multiple-force brake system for industrial drives (2019-06-11),
15. 10228027 - Integrated multi-position force lubrication system (2019-03-12),
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 - Dec 30 2025

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74 Patents

#11 in Racine, WI

#111 in Wisconsin

#4,790 in US

#9,842 in the World

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Racine, WI, United States of America

Twin Disc Incorporated

Forward Citations = 1,107

51 inventors:

goldMedal James B Black (8 out of 8 patents)

silverMedal Philip Rolla (7 out of 7 patents)

bronzeMedal Edwin Eugene Wilson (7 out of 11 patents)

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

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

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