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For the Inventor, By the Inventor

Chicago, IL, United States of America

Energy Absorption Systems, Inc.

Calculating rank
USPTO Granted Patents = 91

% Expired Patents = 5.5



Trademarks = 24

Forward Citations = 2,280

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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),
Company Overview
Energy Absorption Systems, Inc., based in Chicago, IL, specializes in the development and manufacturing of advanced energy absorption technologies aimed at enhancing road safety. The company focuses on innovative solutions such as crash cushions, vehicle impact attenuators, and highway barriers designed to mitigate the effects of vehicle collisions. Their product range also includes frangible posts, towable impact attenuators, self-righting delineators, and guardrail assemblies, all engineered to improve safety on roadways and protect both vehicles and pedestrians.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

91 Patents

#70 in Chicago, IL

#233 in Illinois

#4,113 in US

#8,462 in the World

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

Energy Absorption Systems, Inc.

Forward Citations = 2,280

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Energy Absorption Systems, Inc.. Retrieved from https://idiyas.com/company/energy-absorption-systems

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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