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For the Inventor, By the Inventor

Elmira, NY, United States of America

The Hilliard Corporation

Calculating rank
USPTO Granted Patents = 40



Trademarks = 2

Forward Citations = 679

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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)


Core Competencies:
Overrunning Clutch
Centrifugal Clutch
Drive Coupling
Bi-Directional Clutch
Transmission
Differential
Electromagnetic Brake
Spring Assembly
Vehicle Drive System
Heat Mitigating Spring
Engagement Control
Friction Disk

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),
Company Overview
The Hilliard Corporation, based in Elmira, NY, specializes in the design and manufacture of advanced mechanical power transmission products. The company focuses on delivering innovative solutions for various industries, including aerospace, automotive, and industrial applications. Hilliard's expertise encompasses a range of technologies, such as clutches, brakes, and conveyor systems, aimed at enhancing operational efficiency and reliability. With a commitment to quality and engineering excellence, Hilliard serves a diverse clientele across North America and beyond.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

The Hilliard Corporation USPTO Patent Assignee Logo
40 Patents

#4 in Elmira, NY

#532 in New York

#8,637 in US

#17,098 in the World

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

The Hilliard Corporation

Forward Citations = 679

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: The Hilliard Corporation. Retrieved from https://idiyas.com/company/hilliard

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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