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For the Inventor, By the Inventor

City of Industry, CA, United States of America

Acorn Engineering Company


USPTO Granted Patents = 137



Trademarks = 74

Forward Citations = 1,044

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45 inventors (with patents filed for the assignee):

goldMedal Darryl M Boeltl (42 out of 42 patents)

silverMedal Earl L Morris (33 out of 35 patents)

bronzeMedal Keith D Marshall (18 out of 19 patents)

4.  Christopher T Adkison (16 out of 17 patents)

5.  V Walter Hafner (14 out of 17 patents)

6.  Larry D Fields (11 out of 11 patents)

7.  Carlos J Galeazzi (9 out of 11 patents)

8.  Theodore J Sally (9 out of 10 patents)

9.  David A Young (9 out of 10 patents)

10.  Ron T Hahn (8 out of 8 patents)

11.  Edward B Knoles (7 out of 7 patents)

12.  David P Molinaro (6 out of 6 patents)

13.  Thomas K Zinn (5 out of 8 patents)

14.  Robert L Wheeler (5 out of 16 patents)

15.  Chris Adkison (5 out of 5 patents)


Core Competencies:
Water Providing Station
Hand Washing Station
Clapper Valve
Water Bottle Filler
Showerhead
Ligature Resistant Drain
Accumulator Assembly
Thermostatic Valve
Mechanical Safety Shut-Down Valve
Pneumatic Controller
Folded Towel Dispenser
Wash Basin

137 patents:

1. 12410592 - Water providing station (2025-09-09),
2. D1089571 - Hand washing station (2025-08-19),
3. 12359735 - Spring stop for clapper valve (2025-07-15),
4. 12349822 - Hook for suspending items (2025-07-08),
5. 12292123 - Clapper with an upstream cam-arm and roller arrangement (2025-05-06),
6. D1065924 - Water bottle filler (2025-03-11),
7. D1062348 - Water bottle filler (2025-02-18),
8. D1054737 - Hand dryer wall guard (2024-12-24),
9. 12060702 - Accumulator assembly (2024-08-13),
10. D1032782 - Showerhead (2024-06-25),
11. 11976736 - Eccentric backflow preventer (2024-05-07),
12. D1021025 - Shower caddy (2024-04-02),
13. D1019889 - Showerhead (2024-03-26),
14. D1019265 - Bottle filling station (2024-03-26),
15. D1019194 - Shelf (2024-03-26),
Acorn Engineering Company is a leading manufacturer of plumbing fixtures, systems, and equipment. With over 60 years of experience, Acorn has earned a reputation for providing high-quality products and innovative solutions for commercial, institutional, and industrial applications. Their extensive product range includes stainless steel and solid surface fixtures, emergency showers, drinking fountains, water management systems, and more. Acorn's commitment to craftsmanship, sustainability, and customer satisfaction has made them a trusted choice for architects, engineers, and facility managers worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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137 Patents

#1 in

#2,734 in

#5,753 in the World

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City of Industry, CA, United States of America

Acorn Engineering Company

Forward Citations = 1,044

45 inventors:

goldMedal Darryl M Boeltl (42 out of 42 patents)

silverMedal Earl L Morris (33 out of 35 patents)

bronzeMedal Keith D Marshall (18 out of 19 patents)

4.  Christopher T Adkison (16 out of 17 patents)

5.  V Walter Hafner (14 out of 17 patents)

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