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For the Inventor, By the Inventor

Carrollton, TX, United States of America

Dosmatic USA, Inc.


USPTO Granted Patents = 13

% Expired Patents = 15.4



Trademarks = 6

Forward Citations = 98

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6 inventors (with patents filed for the assignee):

goldMedal Frank A Walton (13 out of 14 patents)

silverMedal James E Williams (5 out of 5 patents)

bronzeMedal Edward Grout (3 out of 3 patents)

4.  Jay A Rasmussen (3 out of 4 patents)

5.  James Allen Mann, Jr (1 out of 1 patent)

6.  James A Mann (1 out of 1 patent)


13 patents:

1. D603435 - Dosage piston retention clip (2009-11-03),
2. D603427 - On-off plunger (2009-11-03),
3. D602512 - Piston assembly (2009-10-20),
4. 7438537 - Liquid additive injection pump with mixing chamber and one way valve (2008-10-21),
5. D573620 - Self sealing piston ring (2008-07-22),
6. 7131454 - Piston sealing mechanism for liquid additive injection pump (2006-11-07),
7. D525685 - One way valve gasket (2006-07-25),
8. 7032760 - Backwash flushing filter (2006-04-25),
9. 7000782 - Backwash flushing filter (2006-02-21),
10. 6910405 - On/off switch for liquid additive injection pump (2005-06-28),
11. 6431198 - Pumping system for the injection of measured quantities of fluid into a fluid stream (2002-08-13),
12. 6357466 - Pumping system for the injection of measured quantities of fluid into a fluid stream (2002-03-19),
13. 6254366 - Replaceable seal having a friction fit (2001-07-03),
Dosmatic USA, Inc. is a leading manufacturer of water-powered chemical injectors and proportioners. The company offers a wide range of products for a variety of industries, including agriculture, food processing, and industrial applications. Dosmatic's innovative solutions provide accurate and reliable dosing of chemicals and fertilizers, helping customers improve efficiency and reduce waste. With a commitment to quality and customer satisfaction, Dosmatic continues to be a trusted partner for liquid management solutions.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

13 Patents

#24 in Carrollton, TX

#1,485 in Texas

#23,808 in US

#44,950 in the World

Carrollton, TX (US)
Carrollton, TX, United States of America

Dosmatic USA, Inc.

Forward Citations = 98

6 inventors:

goldMedal Frank A Walton (13 out of 14 patents)

silverMedal James E Williams (5 out of 5 patents)

bronzeMedal Edward Grout (3 out of 3 patents)

4.  Jay A Rasmussen (3 out of 4 patents)

5.  James Allen Mann, Jr (1 out of 1 patent)

Please report any incorrect information to [email protected]
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