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For the Inventor, By the Inventor

Traverse City, MI, United States of America

The Oilgear Company

Calculating rank
USPTO Granted Patents = 17

% Expired Patents = 5.9



Trademarks = 2

Forward Citations = 140

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21 inventors (with patents filed for the assignee):

goldMedal Jared Schlueter (6 out of 6 patents)

silverMedal Mitch Terhune (4 out of 4 patents)

bronzeMedal Gary S Jendrzejek (3 out of 3 patents)

4.  Joshua B Groves (2 out of 2 patents)

5.  Josh Groves (2 out of 2 patents)

6.  Frank Groves (2 out of 2 patents)

7.  Tyler Zawacki (2 out of 2 patents)

8.  Dan Mizell (2 out of 2 patents)

9.  Christopher Jon Walter (1 out of 3 patents)

10.  Zach Beery (1 out of 3 patents)

11.  Robert D Chung (1 out of 1 patent)

12.  Anthony M Claas (1 out of 3 patents)

13.  Reginald J Goss (1 out of 1 patent)

14.  Mark J Matenaer (1 out of 1 patent)

15.  Michael J Voigt (1 out of 1 patent)


17 patents:

1. 12320438 - High stability regulator (2025-06-03),
2. 12258980 - Subsea hydraulic pressure boosting and regulating system (2025-03-25),
3. 12044327 - Multi-function subplate mounted valve (2024-07-23),
4. 11891928 - Hydraulic valve with linear adjustable throttling gate and a hydraulic velocity fuse throttling gate (2024-02-06),
5. 11828376 - High stability regulator (2023-11-28),
6. 11480255 - Multi-function subplate mounted valve (2022-10-25),
7. 11401954 - Subsea hydraulic pressure boosting and regulating system (2022-08-02),
8. 10508745 - Valve assembly (2019-12-17),
9. 10365669 - Systems and methods for fluid regulation (2019-07-30),
10. 7172394 - Saddle bearing liner for axial piston pump (2007-02-06),
11. 4932310 - Bearing lubrication in axial piston fluid devices (1990-06-12),
12. 4710107 - Swashblock lubrication in axial piston fluid displacement devices (1987-12-01),
13. 4644748 - Constant speed hydraulic drive (1987-02-24),
14. 4560309 - Two tooth tapered reamer (1985-12-24),
15. 4434811 - Coupling seal and method of assembly (1984-03-06),
Company Overview
The Oilgear Company, headquartered in Traverse City, Michigan, specializes in the design and manufacture of hydraulic systems and components. With a focus on high-performance solutions, Oilgear serves various industries, including aerospace, industrial machinery, and energy. The company is known for its innovative approach to hydraulic technology, emphasizing efficiency and reliability in its products. Oilgear's commitment to research and development ensures that it remains at the forefront of advancements in hydraulic engineering.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

17 Patents

#2 in Traverse City, MI

#682 in Michigan

#18,913 in US

#35,974 in the World

Traverse City, MI (US)
Traverse City, MI, United States of America

The Oilgear Company

Forward Citations = 140

21 inventors:

goldMedal Jared Schlueter (6 out of 6 patents)

silverMedal Mitch Terhune (4 out of 4 patents)

bronzeMedal Gary S Jendrzejek (3 out of 3 patents)

4.  Joshua B Groves (2 out of 2 patents)

5.  Josh Groves (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: The Oilgear Company. Retrieved from https://idiyas.com/company/oilgear-company

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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