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For the Inventor, By the Inventor

Plymouth, MI, United States of America

Dadco, Inc.


USPTO Granted Patents = 23



Trademarks = 16

Forward Citations = 130

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11 inventors (with patents filed for the assignee):

goldMedal Jonathan P Cotter (17 out of 33 patents)

silverMedal Jason L Vandine (3 out of 3 patents)

bronzeMedal Michael C Diebolt (2 out of 2 patents)

4.  Jeremy M Kluck (2 out of 2 patents)

5.  David John Gretka, Ii (2 out of 2 patents)

6.  Karen M VanderWeide (1 out of 1 patent)

7.  Hans E Wichmann (1 out of 1 patent)

8.  Carleton D Hall (1 out of 1 patent)

9.  Larry I Kufahl (1 out of 5 patents)

10.  Harry K Kralkow (1 out of 3 patents)

11.  Davis A Donnelly (1 out of 3 patents)


23 patents:

1. 12152653 - Gas spring with overtravel pressure relief (2024-11-26),
2. 12066077 - Gas spring with overtravel pressure relief (2024-08-20),
3. 11959556 - Pressure relief valve assembly (2024-04-16),
4. 11959530 - Gas spring with overtravel pressure relief (2024-04-16),
5. 11460087 - Gas spring with overtravel pressure relief (2022-10-04),
6. 10962030 - Pneumatic cylinder (2021-03-30),
7. 10864610 - Swarf container filler and method (2020-12-15),
8. 10527121 - Overtravel pressure relief for a gas spring (2020-01-07),
9. 10113605 - Overtravel relief assembly for a gas spring (2018-10-30),
10. 9551394 - Overtravel pressure relief for a gas spring (2017-01-24),
11. 9447834 - Overtravel pressure relief for a gas spring (2016-09-20),
12. 9416840 - Gas spring (2016-08-16),
13. 9347510 - Overtravel pressure relief for a gas spring (2016-05-24),
14. 9144864 - Toe clamp, and related manufacturing method, clamping arrangement, and fixture (2015-09-29),
15. 9046146 - Gas spring and gas spring components (2015-06-02),
Company Overview
Dadco, Inc. is a leading manufacturer specializing in innovative solutions for the automotive and industrial sectors. Based in Plymouth, Michigan, the company focuses on the development of advanced hydraulic and pneumatic components, including gas springs, dampers, and other motion control products. With a commitment to quality and engineering excellence, Dadco serves a diverse clientele, providing tailored solutions that enhance performance and efficiency in various applications 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 13 2026

Dadco, Inc. USPTO Patent Assignee Logo
23 Patents

#16 in Plymouth, MI

#524 in Michigan

#14,428 in US

#27,685 in the World

Plymouth, MI (US)
Plymouth, MI, United States of America

Dadco, Inc.

Forward Citations = 130

11 inventors:

goldMedal Jonathan P Cotter (17 out of 33 patents)

silverMedal Jason L Vandine (3 out of 3 patents)

bronzeMedal Michael C Diebolt (2 out of 2 patents)

4.  Jeremy M Kluck (2 out of 2 patents)

5.  David John Gretka, Ii (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dadco, Inc.. Retrieved from https://idiyas.com/company/dadco

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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