For the Inventor, By the Inventor

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Milwaukee, WI, United States of America

Douglas Dynamics LLC

USPTO Granted Patents = 57

% Expired Patents = 1.8

CIPO Patents = 7

Trademarks = 20

Forward Citations = 936

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67 inventors (with patents filed for the assignee):

David N Bloxdorf (16 out of 17 patents)

Chad Thomas Barker (11 out of 11 patents)

James R Doornek (9 out of 9 patents)

4. Christopher Aaron Horn (8 out of 8 patents)

5. Steven Lohry Klug (8 out of 9 patents)

6. Matthew Terran Kaminecki (7 out of 7 patents)

7. Gary E Watson (6 out of 7 patents)

8. Matthew Thoma Curran (5 out of 5 patents)

9. Edward A Simi (5 out of 5 patents)

10. Christopher A Dominguez (4 out of 4 patents)

11. Paul Yagiela (4 out of 5 patents)

12. Andre Valmont LeBlond (4 out of 5 patents)

13. James Calvin Pieper (4 out of 5 patents)

14. Tyler Barron Jones (4 out of 4 patents)

15. Mark Lawrence Stultz (3 out of 4 patents)

Core Competencies:

Snow Plow Assembly

Spreader Device

Brine Machine

Material Mixing System

Hydraulic Control Systems

Vehicle Mounted Accessory

Adjustable Wing Plow

Automatic Headlamp Switching

57 patents: Sort by Forward Citations

1. 12644244 - Containment plow (2026-06-02),

2. 12630989 - Spreader or sprayer and control system therefore (2026-05-19),

3. 12595632 - Snow and ice spreader and sprayer (2026-04-07),

4. 12497744 - Containment plow (2025-12-16),

5. 12497743 - Convertible snow plow (2025-12-16),

6. 12281453 - Snow plow assembly (2025-04-21),

7. 12188190 - Spreader with shaftless auger (2025-01-07),

8. 11731088 - Brine machine and method (2023-08-22),

9. 11680379 - Spreader with shaftless auger (2023-06-20),

10. 11555282 - Snow plow and mount assembly (2023-01-17),

11. 11535986 - Spreader (2022-12-27),

12. 11499280 - Snow plow and mount assembly (2022-11-15),

13. 11427978 - Snow plow and mount assembly (2022-08-30),

14. 11332899 - Snow plow and mount assembly (2022-05-17),

15. 10960363 - Brine machine and method (2021-03-30),

Douglas Dynamics LLC is a leading manufacturer and distributor of snow and ice control equipment, as well as work truck attachments. Founded in 2004, the company is known for its high-quality products, including plows, spreaders, and other accessories designed for commercial and municipal use. With a commitment to innovation and customer satisfaction, Douglas Dynamics serves a diverse range of clients, ensuring reliable performance in challenging weather conditions. The company operates through several well-known brands, including Western, Fisher, and SnowEx, and is dedicated to providing solutions that enhance productivity and safety for its users.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

Douglas Dynamics LLC

57 Patents

#37 in Milwaukee, WI

#160 in Wisconsin

#6,232 in US

#12,529 in the World

Milwaukee, WI, United States of America

Douglas Dynamics LLC

Forward Citations = 936

67 inventors:

David N Bloxdorf (16 out of 17 patents)

Chad Thomas Barker (11 out of 11 patents)

James R Doornek (9 out of 9 patents)

4. Christopher Aaron Horn (8 out of 8 patents)

5. Steven Lohry Klug (8 out of 9 patents)

Please report any incorrect information to [email protected]

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