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For the Inventor, By the Inventor

Elmira, NY, United States of America

The Hilliard Corporation


USPTO Granted Patents = 40



Trademarks = 2

Forward Citations = 656

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29 inventors (with patents filed for the assignee):

goldMedal David C Ochab (15 out of 16 patents)

silverMedal James E Palmer (12 out of 12 patents)

bronzeMedal Kelly P Heath (12 out of 12 patents)

4.  John R Updyke (7 out of 9 patents)

5.  Howard J Knickerbocker (6 out of 6 patents)

6.  Brenton H Barron (4 out of 4 patents)

7.  Matthew J Cowen (4 out of 4 patents)

8.  Steven M Averill (4 out of 4 patents)

9.  William J Coon (3 out of 3 patents)

10.  John Michael Hasson, Jr (3 out of 3 patents)

11.  J Brendan Brewer (2 out of 2 patents)

12.  Scott C Schneider (2 out of 2 patents)

13.  Leslie R White (2 out of 2 patents)

14.  Michael E Kimble (2 out of 2 patents)

15.  Ernest H Pauli (2 out of 2 patents)


40 patents:

1. 12686265 - Positive drive differential (2026-07-21),
2. 12496902 - Positive drive differential with pinion disconnect (2025-12-16),
3. 12331798 - Spring and damper assembly for a centrifugal clutch in a continuously variable transmission (2025-06-17),
4. 12146568 - Driven clutch with dual helix assembly for continuously variable transmission (2024-11-19),
5. 12104659 - Flexible armature plate for an electro-magnetic overrunning clutch (2024-10-01),
6. 11421769 - Bi-directional overrunning clutch differential with output hub supports (2022-08-23),
7. 11236811 - Center differential and drive system for four wheel drive (2022-02-01),
8. 11131350 - Power transmitting clutch and disconnect (2021-09-28),
9. 10989258 - Flexible armature plate for an electro-magnetic overrunning clutch (2021-04-27),
10. 9856930 - Bi-directional overrunning clutch with outer spring for a drive axle (2018-01-02),
11. 9360059 - Twin ratio differential with bi-directional overrunning clutch (2016-06-07),
12. 9278422 - System for dressing a centrifugal clutch (2016-03-08),
13. 9272620 - True four wheel drive system for vehicle (2016-03-01),
14. 9022195 - Bi-directional overrunning clutch having split roll cage and drag mechanism (2015-05-05),
15. 8919513 - Bi-directional overrunning clutch having split roll cage (2014-12-30),
The Hilliard Corporation is a leading manufacturer of motion control products, industrial brakes, and filtration systems. With over 100 years of experience, Hilliard provides innovative solutions to various industries including agriculture, construction, mining, and marine. Their products are known for their high quality, durability, and efficiency. Visit their website to explore their wide range of products and solutions.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

The Hilliard Corporation
40 Patents

#4 in Elmira, NY

#529 in New York

#8,604 in US

#17,011 in the World

Elmira, NY (US)
Elmira, NY, United States of America

The Hilliard Corporation

Forward Citations = 656

29 inventors:

goldMedal David C Ochab (15 out of 16 patents)

silverMedal James E Palmer (12 out of 12 patents)

bronzeMedal Kelly P Heath (12 out of 12 patents)

4.  John R Updyke (7 out of 9 patents)

5.  Howard J Knickerbocker (6 out of 6 patents)

Please report any incorrect information to [email protected]
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