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For the Inventor, By the Inventor

Itasca, IL, United States of America

Hendrickson Usa, L L.c.


USPTO Granted Patents = 251



Trademarks = 56

Forward Citations = 1,932

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172 inventors (with patents filed for the assignee):

goldMedal Shawn D Noble (46 out of 47 patents)

silverMedal Ashley Thomas Dudding (44 out of 57 patents)

bronzeMedal Jay D White (36 out of 43 patents)

4.  John Edward Ramsey (24 out of 34 patents)

5.  Phillippi R Pierce (18 out of 24 patents)

6.  Michael P Robinson (17 out of 18 patents)

7.  R Scott Fulton (16 out of 17 patents)

8.  Damon Elwood Dilworth (16 out of 17 patents)

9.  Andrew J Westnedge (15 out of 16 patents)

10.  Jesse W Cervantez (14 out of 17 patents)

11.  Matthew J Van Meter (14 out of 15 patents)

12.  Michael J Keeler (13 out of 26 patents)

13.  Hormoz Kerendian (13 out of 13 patents)

14.  William Wilson (11 out of 22 patents)

15.  Jerome Lim Cortez (11 out of 11 patents)


Core Competencies:
Heavy-Duty Vehicles
Axle Suspension Systems
Slack Adjuster Assembly
Lift Axle Systems
Damping Air Spring
Torque Rod
Hub and Rotor Assembly
Tire Inflation System
Self-Steering Axle
Composite Suspension Components
Brake System Components
Modular Bushing Assembly

251 patents:

1. 12449013 - Slack adjuster assembly for heavy-duty vehicles (2025-10-21),
2. 12427826 - Control apparatus for lift axle/suspension systems of heavy-duty vehicles (2025-09-30),
3. 12403737 - Lift axle suspension systems with lift paddle (2025-09-02),
4. 12391082 - Axle-to-beam connection for heavy-duty vehicle axle/suspension systems (2025-08-19),
5. 12370861 - Torque rod for vehicle suspension (2025-07-29),
6. 12370850 - Wishbone-shaped linkage and modular bushing assembly and suspension systems incorporating the same (2025-07-29),
7. 12337637 - Clamp group and round axle with alignment features (2025-06-24),
8. 12305728 - Slack adjuster assembly for heavy-duty vehicles (2025-05-20),
9. 12291064 - Damping air spring for heavy-duty vehicle axle/suspension systems (2025-05-06),
10. 12280618 - Rotary union with energy harvesting structure (2025-04-21),
11. 12179536 - Under beam lift assembly for heavy-duty vehicles (2024-12-31),
12. 12163565 - Process for manufacturing a leaf spring and insert for leaf spring (2024-12-10),
13. 12115814 - Axle for heavy-duty vehicles (2024-10-15),
14. 11891141 - Knuckle for a self-steering axle/suspension system (2024-02-06),
15. 11865862 - Hub and rotor assembly (2024-01-09),
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USPTO Data Jan 1 1976 - Dec 30 2025

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251 Patents

#3 in Itasca, IL

#106 in Illinois

#1,637 in US

#3,353 in the World

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Itasca, IL, United States of America

Hendrickson Usa, L L.c.

Forward Citations = 1,932

172 inventors:

goldMedal Shawn D Noble (46 out of 47 patents)

silverMedal Ashley Thomas Dudding (44 out of 57 patents)

bronzeMedal Jay D White (36 out of 43 patents)

4.  John Edward Ramsey (24 out of 34 patents)

5.  Phillippi R Pierce (18 out of 24 patents)

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