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For the Inventor, By the Inventor

Sullivan, IL, United States of America

Hydro-gear Limited Partnership


USPTO Granted Patents = 540


Trademarks = 32

Forward Citations = 5,221

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95 inventors (with patents filed for the assignee):

goldMedal Raymond M Hauser (157 out of 160 patents)

silverMedal Thomas J Langenfeld (93 out of 95 patents)

bronzeMedal Scott W Keller (72 out of 73 patents)

4.  Nathan W Bonny (71 out of 71 patents)

5.  Michael Lee Bennett (64 out of 65 patents)

6.  Lonnie E Holder (56 out of 57 patents)

7.  Alyn G Brown (37 out of 46 patents)

8.  Eric S Phanco (34 out of 34 patents)

9.  Jesse L Probst (30 out of 30 patents)

10.  John D Schreier (27 out of 56 patents)

11.  Robert E Trimble (27 out of 27 patents)

12.  Ivan Eugene Fox (27 out of 27 patents)

13.  Christopher Kenneth Wyatt (26 out of 31 patents)

14.  K Mike McCoy (25 out of 25 patents)

15.  Shane A Deters (25 out of 26 patents)


Core Competencies:
Stability Control System
Electric Drive Assembly
Autonomous Vehicle Navigation
Battery Mounting System
Vibration Damping Apparatus
Vision Based Guidance System
Electric Transaxle
Modular Drive System
Operator Feedback System
Regeneration Power Control
Control Assembly for Zero Turn Device
Liquid-Cooled Electric Drive Assembly

540 patents:

1. 12459492 - Stability control system (2025-11-04),
2. 12429100 - Electric brake assembly for electric drives (2025-09-30),
3. 12418215 - Liquid-cooled electric drive assembly (2025-09-16),
4. D1089064 - Battery case (2025-08-19),
5. D1087885 - Battery case (2025-08-12),
6. 12302793 - Operator feedback system for riding lawn mower (2025-05-20),
7. 12298784 - Visual identifiers for docking and zoning an autonomous mower (2025-05-13),
8. 12280820 - Control assembly for zero turn device (2025-04-21),
9. 12239051 - Battery mounting system for electric zero-turn mower (2025-03-04),
10. 12184152 - Vibration damping apparatus for mounting an electric actuator on a hydraulic drive (2024-12-31),
11. 12179739 - Regeneration power control (2024-12-31),
12. 12171159 - Autonomous vehicle navigation (2024-12-24),
13. 12162533 - Control assembly for zero turn vehicle (2024-12-10),
14. 12151739 - Electric transaxle with integral power generating device (2024-11-26),
15. 12151625 - Vehicle drive and control system (2024-11-26),
Hydro-Gear Limited Partnership is a leading manufacturer of precision drive systems for the lawn and garden industry. With a strong focus on innovation and quality, Hydro-Gear designs and produces world-class hydrostatic transmissions, transaxles, and other drive systems used in various outdoor power equipment. They offer a wide range of products that deliver superior performance and efficiency, helping their customers achieve exceptional results. Visit their website to learn more about their offerings and explore the cutting-edge solutions Hydro-Gear has to offer.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

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540 Patents

#1 in Sullivan, IL

#49 in Illinois

#869 in US

#1,743 in the World

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Sullivan, IL, United States of America

Hydro-gear Limited Partnership

Forward Citations = 5,221

95 inventors:

goldMedal Raymond M Hauser (157 out of 160 patents)

silverMedal Thomas J Langenfeld (93 out of 95 patents)

bronzeMedal Scott W Keller (72 out of 73 patents)

4.  Nathan W Bonny (71 out of 71 patents)

5.  Michael Lee Bennett (64 out of 65 patents)

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