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For the Inventor, By the Inventor

Rancho Cucamonga, CA, United States of America

Proulx Manufacturing, Inc.


USPTO Granted Patents = 36

% Expired Patents = 8.3



Trademarks = 6

Forward Citations = 539

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6 inventors (with patents filed for the assignee):

goldMedal Richard A Proulx (36 out of 36 patents)

silverMedal William Patrick Conley (4 out of 32 patents)

bronzeMedal Rodger Dale Thomason (4 out of 20 patents)

4.  James R Pfaltzgraff (3 out of 6 patents)

5.  Sasha Johnson (2 out of 2 patents)

6.  Paul T Conlon (2 out of 2 patents)


Core Competencies:
Aerodynamic Trimmer Head
Flexible Cutting Line
Trimmer Head
Noise Attenuating Line
Manufacturing Process
Double-Strand Monofilament
Line Loading Mechanism
Vegetation Trimmers

36 patents:

1. 9295195 - Aerodynamic trimmer head for use in flexible line rotary trimmers (2016-03-29),
2. 8973274 - Fixed line head for flexible line rotary trimmers (2015-03-10),
3. 8918999 - Aerodynamic trimmer head for use in flexible line rotary trimmers (2014-12-30),
4. 8910388 - Aerodynamic trimmer head for use in flexible line rotary trimmers (2014-12-16),
5. 8707567 - Trimmer head for use in flexible line rotary trimmers having improved line loading mechanism (2014-04-29),
6. 8567073 - Aerodynamic trimmer head for use in flexible line rotary trimmers (2013-10-29),
7. 8510960 - Trimmer head spool for use in flexible line rotary trimmer heads having improved line loading mechanism (2013-08-20),
8. D638679 - Trimmer head for use in flexible line rotary trimmers (2011-05-31),
9. D638678 - Trimmer head for use in flexible line rotary trimmers (2011-05-31),
10. 7919028 - Method of manufacturing noise attenuating flexible cutting line for use in rotary vegetation trimmers (2011-04-05),
11. 7882642 - Trimmer head for use in flexible line rotary trimmers having improved line loading mechanism (2011-02-08),
12. D630068 - Trimmer head for use in flexible line rotary trimmers (2011-01-04),
13. 7797839 - Trimmer head for use in flexible line rotary trimmers having improved line loading mechanism (2010-09-21),
14. 7762002 - Trimmer head for use in flexible line rotary trimmers having improved line loading mechanism (2010-07-27),
15. 7718103 - Method of manufacturing noise attenuating flexible cutting line for use in rotary vegetation trimmers (2010-05-18),
Proulx Manufacturing, Inc. is a specialized manufacturer based in Rancho Cucamonga, California, focusing on precision engineering and custom fabrication solutions. The company excels in developing high-quality components and systems for various industries, including aerospace, automotive, and industrial applications. With a commitment to innovation, Proulx leverages advanced manufacturing techniques and technologies to meet the evolving needs of its clients, ensuring reliability and performance in every product they deliver.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

Proulx Manufacturing, Inc.
36 Patents

#4 in Rancho Cucamonga, CA

#2,245 in California

#9,502 in US

#18,716 in the World

Rancho Cucamonga, CA (US)
Rancho Cucamonga, CA, United States of America

Proulx Manufacturing, Inc.

Forward Citations = 539

6 inventors:

goldMedal Richard A Proulx (36 out of 36 patents)

silverMedal William Patrick Conley (4 out of 32 patents)

bronzeMedal Rodger Dale Thomason (4 out of 20 patents)

4.  James R Pfaltzgraff (3 out of 6 patents)

5.  Sasha Johnson (2 out of 2 patents)

Please report any incorrect information to [email protected]
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