% Expired Patents = 13.3

Trademarks = 1

Forward Citations = 154

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5 inventors (with patents filed for the assignee):

Robert J Heideman (15 out of 27 patents)

Richard T Mitera (5 out of 6 patents)

Richard G Dressell, Jr (3 out of 6 patents)

4. Ronald F Legawiec (1 out of 1 patent)

5. Virgil J Van Parys (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. 7156215 - Quick change shock absorber (2007-01-02),

2. 6609597 - Dampening apparatus (2003-08-26),

3. 5407052 - Snubber assembly (1995-04-18),

4. 5159997 - Miniature shock absorber (1992-11-03),

5. 5147017 - Shock absorber (1992-09-15),

6. 5050712 - Shock absorber (1991-09-24),

7. 4825031 - Weld gun control (1989-04-25),

8. 4810849 - Weld gun control (1989-03-07),

9. 4771866 - Shock absorber with proximity switch (1988-09-20),

10. 4702355 - Shock absorber with hole-on-groove configuration and with adjusting (1987-10-27),

11. 4694939 - Shock absorber with stop collar (1987-09-22),

12. 4690255 - Compact shock absorber (1987-09-01),

13. D281772 - Hydraulic shock absorber (1985-12-17),

14. 4321987 - Shock absorber (1982-03-30),

15. 4298101 - Shock absorber (1981-11-03),

Company Overview

Enertrols, Inc. is a technology-driven company based in Westland, Michigan, specializing in advanced energy management solutions. The organization focuses on the development and manufacturing of innovative products that enhance energy efficiency and sustainability across various sectors. With a commitment to research and development, Enertrols leverages cutting-edge technology to create solutions that address the evolving needs of energy consumption and management, contributing to a more sustainable future.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

15 Patents

#2 in Westland, MI

#753 in Michigan

#21,068 in US

#39,959 in the World

Westland, MI, United States of America

Enertrols, Inc.

Forward Citations = 154

5 inventors:

Robert J Heideman (15 out of 27 patents)

Richard T Mitera (5 out of 6 patents)

Richard G Dressell, Jr (3 out of 6 patents)

4. Ronald F Legawiec (1 out of 1 patent)

5. Virgil J Van Parys (1 out of 1 patent)

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

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]