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Shreveport, LA, United States of America

W-k-m Wellhead Systems, Inc.

USPTO Granted Patents = 32

Forward Citations = 436

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15 inventors (with patents filed for the assignee):

Clifford M Peters (15 out of 24 patents)

Robert J Diehl (6 out of 9 patents)

William L Godare (5 out of 5 patents)

4. James T Carmichael (3 out of 3 patents)

5. Frederic D Wells, Jr (3 out of 3 patents)

6. Joe G Chambless (2 out of 3 patents)

7. Melvin J Hargraves (2 out of 2 patents)

8. Henry O Tohill (2 out of 2 patents)

9. Allen Roberts (1 out of 13 patents)

10. John P Honaker, Jr (1 out of 1 patent)

11. Donald F Hallden (1 out of 1 patent)

12. L V McCary, Jr (1 out of 1 patent)

13. Herbert O Quebe (1 out of 1 patent)

14. Paul E McGlasson (1 out of 1 patent)

15. John W Knight (1 out of 1 patent)

32 patents: Sort by Forward Citations

1. 4460039 - Wellhead valve removal and installation tool (1984-07-17),

2. 4458903 - Control line sealing connection (1984-07-10),

3. 4390063 - Geothermal wellhead packing assembly (1983-06-28),

4. 4384730 - Seal assembly (1983-05-24),

5. 4372563 - Packing support for mounting a well casing packing (1983-02-08),

6. 4364412 - Pull type relay valve with automatic lockout (1982-12-21),

7. 4353560 - Metal seal assembly with deformable sealing ring (1982-10-12),

8. 4347867 - Safety valve (1982-09-07),

9. 4328013 - Baffle plate for steam separator (1982-05-04),

10. 4320779 - Push-type control valve for fluid actuator (1982-03-23),

11. 4291768 - Packing assembly for wellheads (1981-09-29),

12. 4278278 - Means for tensioning tubing in a wellhead assembly (1981-07-14),

13. 4268283 - Fluid control means for geothermal wells (1981-05-19),

14. 4263938 - Relay valve for fluid actuators (1981-04-28),

15. 4263025 - Baffle plate for cyclone steam separator (1981-04-21),

W-K-M Wellhead Systems, Inc. is a leading manufacturer of wellhead and pressure control equipment for the oil and gas industry. With over 50 years of experience, the company has built a strong reputation for delivering high-quality products and excellent customer service. W-K-M's wellhead systems are designed to meet the rigorous demands of the industry, ensuring safe and efficient operations. From drilling to production, W-K-M provides a comprehensive range of wellhead products and services to support the global energy sector.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

32 Patents

#2 in Shreveport, LA

#23 in Louisiana

#10,244 in US

#20,093 in the World

Shreveport, LA, United States of America

W-k-m Wellhead Systems, Inc.

Forward Citations = 436

15 inventors:

Clifford M Peters (15 out of 24 patents)

Robert J Diehl (6 out of 9 patents)

William L Godare (5 out of 5 patents)

4. James T Carmichael (3 out of 3 patents)

5. Frederic D Wells, Jr (3 out of 3 patents)

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