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For the Inventor, By the Inventor

Wixom, MI, United States of America

Mac Valves, Inc.


USPTO Granted Patents = 80

% Expired Patents = 12.5



Trademarks = 12

Forward Citations = 607

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26 inventors (with patents filed for the assignee):

goldMedal James A Neff (33 out of 35 patents)

silverMedal Kevin C Williams (15 out of 15 patents)

bronzeMedal Jeffrey S Simmonds (15 out of 15 patents)

4.  Robert H Neff (12 out of 12 patents)

5.  Eric Paul Janssen (10 out of 10 patents)

6.  Brett Landacre (9 out of 9 patents)

7.  Richard A Fagerlie (8 out of 9 patents)

8.  Matthew Neff (7 out of 7 patents)

9.  Michael Jamison (6 out of 8 patents)

10.  Gilles Beaulieu (5 out of 6 patents)

11.  Michael E Robert (4 out of 13 patents)

12.  Thomas R Jones (4 out of 4 patents)

13.  Jeffrey Simmonds (3 out of 3 patents)

14.  David M Sobka, Jr (2 out of 2 patents)

15.  Joseph Richardson (2 out of 2 patents)


Core Competencies:
Proportional Flow Control
Pressure Regulator
Solenoid Valve
Pneumatic System
Pilot Valve
Multi-Port Valve
Poppet Valve
Diaphragm Valve
Flow Control
Quad Ring Seal
Modular Valve
Directional Control

80 patents:

1. 12467542 - Valve having a quad ring seal (2025-11-11),
2. 12152700 - Pilot valve having diaphragm (2024-11-26),
3. 12104704 - Three-way valve (2024-10-01),
4. 11976734 - Proportional flow control valve (2024-05-07),
5. 11859729 - Proportional solenoid valve (2024-01-02),
6. 11779872 - Pulse valve (2023-10-10),
7. 11248715 - Proportional solenoid valve (2022-02-15),
8. 11067102 - Digital proportional pressure controller (2021-07-20),
9. 11028837 - Solenoid pump (2021-06-08),
10. 10935153 - Proportional flow control valve poppet with flow control needle (2021-03-02),
11. 10808860 - Latching pneumatic control valve (2020-10-20),
12. 10774943 - Modular valve with O-ring valve set (2020-09-15),
13. 10753498 - Flow-through liquid valve (2020-08-25),
14. 10731677 - Pneumatic control valve manifold (2020-08-04),
15. 10711915 - Pilot actuated control pilot for operating valve (2020-07-14),
Mac Valves, Inc., based in Wixom, Michigan, specializes in the development and manufacturing of advanced pneumatic valves. The company focuses on a range of core technologies including proportional flow control, pressure regulators, solenoid valves, and various types of pilot and multi-port valves. With a commitment to innovation, Mac Valves serves diverse industries by providing solutions that enhance the efficiency and reliability of pneumatic systems, catering to the evolving needs of automation and control applications.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Mac Valves, Inc.
80 Patents

#2 in Wixom, MI

#182 in Michigan

#4,627 in US

#9,440 in the World

Wixom, MI (US)
Wixom, MI, United States of America

Mac Valves, Inc.

Forward Citations = 607

26 inventors:

goldMedal James A Neff (33 out of 35 patents)

silverMedal Kevin C Williams (15 out of 15 patents)

bronzeMedal Jeffrey S Simmonds (15 out of 15 patents)

4.  Robert H Neff (12 out of 12 patents)

5.  Eric Paul Janssen (10 out of 10 patents)

Please report any incorrect information to [email protected]
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