Wilkin; James F.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wilkin; James F..The latest application filed is for "anti-rotation assembly for sliding sleeve".
- Wilkin; James F. - Sherwood Park CA
- Wilkin; James F. - Edmonton Alberta CA
| Patent | Date |
|---|---|
| Sliding sleeve having inverting ball seat Grant 9,677,380 - Wilkin June 13, 2 | 2017-06-13 |
| Sliding sleeve having contracting, dual segmented ball seat Grant 9,624,756 - Cast , et al. April 18, 2 | 2017-04-18 |
| Anti-Rotation Assembly for Sliding Sleeve App 20140251628 - Wilkin; James F. ; et al. | 2014-09-11 |
| Sliding Sleeve Having Inverting Ball Seat App 20140166111 - Wilkin; James F. | 2014-06-19 |
| Sliding Sleeve Having Contracting, Dual Segmented Ball Seat App 20140166112 - Cast; Michael W. ; et al. | 2014-06-19 |
| Downhole Packer Having Tandem Packer Elements for Isolating Frac Zones App 20120012342 - Wilkin; James F. ; et al. | 2012-01-19 |
| Downhole Packer Having Swellable Sleeve App 20120012343 - Wilkin; James F. ; et al. | 2012-01-19 |
| Reliable Sleeve Activation for Multi-Zone Frac Operations Using Continuous Rod and Shifting Tools App 20100108323 - Wilkin; James F. | 2010-05-06 |
| Modular liner hanger Grant 7,128,147 - Marcin , et al. October 31, 2 | 2006-10-31 |
| Two-stage downhole packer Grant 6,612,372 - Freiheit , et al. September 2, 2 | 2003-09-02 |
| Port collar assembly for use in a wellbore Grant 6,513,595 - Freiheit , et al. February 4, 2 | 2003-02-04 |
| Port Collar assembly for use in a wellbore App 20030019630 - Freiheit, Roland R. ; et al. | 2003-01-30 |
| Method and apparatus for downhole sand clean-out operations in the petroleum industry Grant 5,447,200 - Dedora , et al. September 5, 1 | 1995-09-05 |
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