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Forward Citations = 116

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3 inventors (with patents filed for the assignee):

Marvin H Grove (8 out of 9 patents)

Ronald G Dunegan (3 out of 6 patents)

Sidney A Ottenstein (1 out of 6 patents)

10 patents: Sort by Forward Citations

1. 4062516 - Valve construction (1977-12-13),

2. 4026515 - Flow control apparatus (1977-05-31),

3. 4000989 - Method and apparatus for eliminating air from liquid flow streams (1977-01-04),

4. 3998089 - Liquid meter prover apparatus (1976-12-21),

5. 3978707 - Flow control apparatus and system (1976-09-07),

6. 3972507 - Valve construction (1976-08-03),

7. 3969924 - Fluid flow control apparatus and method (1976-07-20),

8. 3957246 - Gate valve and method of manufacture (1976-05-18),

9. 3955796 - Flow control apparatus (1976-05-11),

10. 3952759 - Liquid line break control system and method (1976-04-27),

M & J Valve Company is a leading manufacturer of oil and gas valves, serving industries worldwide. With a strong focus on quality and innovation, M & J Valve has earned a reputation for excellence in valve design and manufacturing. The company offers a wide range of valve products, including gate, ball, and check valves, designed to meet the needs of a variety of applications.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

10 Patents

#460 in Houston, TX

#1,824 in Texas

#28,955 in US

#54,268 in the World

Houston, TX, United States of America

M & J Valve Company

Forward Citations = 116

3 inventors:

Marvin H Grove (8 out of 9 patents)

Ronald G Dunegan (3 out of 6 patents)

Sidney A Ottenstein (1 out of 6 patents)

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