McCaskill; John W.
Patent Applications and Registrations
Patent applications and USPTO patent grants for McCaskill; John W..The latest application filed is for "manipulator system for servicing a hydraulic choke".
- McCaskill; John W. - Jersey Village TX
- McCaskill; John W. - Houston TX
- McCaskill; John W. - Tyler TX
| Patent | Date |
|---|---|
| Manipulator system for servicing a hydraulic choke App 20070051407 - Schmidt; David A. ; et al. | 2007-03-08 |
| Manipulator system for servicing a hydraulic choke Grant 7,159,604 - Schmidt , et al. January 9, 2 | 2007-01-09 |
| Shear mechanism for backpressure relief in a choke valve Grant 7,124,770 - Schmidt , et al. October 24, 2 | 2006-10-24 |
| Manipulator system for servicing a hydraulic choke App 20050236046 - Schmidt, David A. ; et al. | 2005-10-27 |
| Modular actuator system for valves and chokes Grant 6,883,614 - Schmidt , et al. April 26, 2 | 2005-04-26 |
| Shear mechanism for backpressure relief in a choke valve App 20050072464 - Schmidt, Robert F. ; et al. | 2005-04-07 |
| Solids separation system for well flowback App 20040217050 - Schmidt, David A. ; et al. | 2004-11-04 |
| Modular actuator system for valves and chokes App 20040216888 - Schmidt, David A. ; et al. | 2004-11-04 |
| Pipe joint with remotely operable latch Grant 4,185,856 - McCaskill January 29, 1 | 1980-01-29 |
| Balanced stem fail-safe valve system Grant RE30,115 - Herd , et al. October 16, 1 | 1979-10-16 |
| Balanced stem fail-safe valve system Grant 3,933,338 - Herd , et al. January 20, 1 | 1976-01-20 |
| Pipe Hanger Grant 3,741,589 - Herd , et al. June 26, 1 | 1973-06-26 |
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