Hofman; Raymond A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hofman; Raymond A..The latest application filed is for "downhole tool with expandable seat".
- Hofman; Raymond A. - Midland TX
| Patent | Date |
|---|---|
| Downhole tool with expandable seat Grant 8,887,811 - Hofman , et al. November 18, 2 | 2014-11-18 |
| Differential shifting tool and method of shifting Grant 8,820,418 - Hofman , et al. September 2, 2 | 2014-09-02 |
| Downhole Tool With Expandable Seat App 20130292125 - Hofman; Raymond A. ; et al. | 2013-11-07 |
| Differential Shifting Tool and Method of Shifting App 20130146309 - Hofman; Raymond A. ; et al. | 2013-06-13 |
| Cemented open hole selective fracing system Grant 7,926,571 - Hofman April 19, 2 | 2011-04-19 |
| Remotely operated selective fracing system and method Grant 7,802,627 - Hofman , et al. September 28, 2 | 2010-09-28 |
| Cemented Open Hole Selective Fracing System App 20080302538 - Hofman; Raymond A. | 2008-12-11 |
| Method and apparatus for cementing production tubing in a multilateral borehole Grant 7,377,322 - Hofman May 27, 2 | 2008-05-27 |
| Cemented open hole selective fracing system Grant 7,267,172 - Hofman September 11, 2 | 2007-09-11 |
| Remotely operated selective fracing system App 20070204995 - Hofman; Raymond A. ; et al. | 2007-09-06 |
| Cemented open hole selective fracing system App 20060207763 - Hofman; Raymond A. | 2006-09-21 |
| Method and apparatus for cementing production tubing in a multilateral borehole App 20060207765 - Hofman; Raymond A. | 2006-09-21 |
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