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For the Inventor, By the Inventor

Chicago, IL, United States of America

Energy Absorption Systems, Inc.


USPTO Granted Patents = 91

% Expired Patents = 5.5



Trademarks = 24

Forward Citations = 2,276

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49 inventors (with patents filed for the assignee):

goldMedal Patrick A Leonhardt (22 out of 22 patents)

silverMedal Michael J Buehler (19 out of 21 patents)

bronzeMedal James B Welch (16 out of 18 patents)

4.  Barry D Stephens (15 out of 16 patents)

5.  Michael H Oberth (12 out of 12 patents)

6.  Owen S Denman (10 out of 12 patents)

7.  John V Machado (9 out of 10 patents)

8.  Sean Thompson (7 out of 9 patents)

9.  David C Gertz (7 out of 33 patents)

10.  William G Krage (7 out of 8 patents)

11.  Douglas E Wilkinson (6 out of 6 patents)

12.  John F LaTurner (6 out of 6 patents)

13.  Lincoln C Cobb (6 out of 6 patents)

14.  John D Intagliata (5 out of 5 patents)

15.  Bret Eckert (5 out of 5 patents)


Core Competencies:
Crash Cushion
Vehicle Impact Attenuator
Highway Barrier
Energy Absorbing Vehicle Barrier
Frangible Post
Towable Impact Attenuator
Self-Righting Delineator
Guardrail Assembly
Roadway Monitoring
Barrier Transfer Device
Pavement Marker

91 patents:

1. RE47626 - End terminal (2019-09-30),
2. 10047488 - Frangible post for highway barrier end terminals (2018-08-14),
3. 10006179 - Crash cushion (2018-06-26),
4. 10006178 - Self-righting flexible delineator with protective collar (2018-06-26),
5. RE46861 - Crash attenuator (2018-05-21),
6. 9790653 - Energy absorbing vehicle barrier (2017-10-17),
7. 9567717 - Pavement marker (2017-02-14),
8. 9399845 - Crash attenuator (2016-07-26),
9. 9371619 - Self-righting flexible delineator with protective collar (2016-06-21),
10. 9238922 - Ground anchor for flexible delineator (2016-01-19),
11. 9200417 - Guardrail system with a releasable post (2015-12-01),
12. 8974142 - Crash cushion (2015-03-10),
13. 8905382 - End terminal (2014-12-09),
14. 8647012 - Gate for barrier system and methods for the assembly and use thereof (2014-02-11),
15. 8556286 - Towable impact attenuator (2013-10-15),
Energy Absorption Systems, Inc. specializes in designing and manufacturing innovative products for energy absorption and impact protection across various industries. With over 25 years of experience, we develop cutting-edge solutions that enhance safety and minimize damage caused by collisions or impacts. Our diverse range of products includes crash cushions, truck mounted attenuators, barrier systems, and more. We are dedicated to providing reliable, high-quality solutions to our customers and maintaining the highest standards in the industry.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 29 2026

91 Patents

#70 in Chicago, IL

#233 in Illinois

#4,103 in US

#8,429 in the World

Chicago, IL (US)
Chicago, IL, United States of America

Energy Absorption Systems, Inc.

Forward Citations = 2,276

49 inventors:

goldMedal Patrick A Leonhardt (22 out of 22 patents)

silverMedal Michael J Buehler (19 out of 21 patents)

bronzeMedal James B Welch (16 out of 18 patents)

4.  Barry D Stephens (15 out of 16 patents)

5.  Michael H Oberth (12 out of 12 patents)

Please report any incorrect information to [email protected]
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