Leismer; Dwayne D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Leismer; Dwayne D..The latest application filed is for "subsurface annular safety barrier".
- Leismer; Dwayne D. - Basiglio IT
- Leismer; Dwayne D. - Pearland TX
| Patent | Date |
|---|---|
| Subsurface annular safety barrier Grant 7,543,652 - Krawiec , et al. June 9, 2 | 2009-06-09 |
| Subsurface Annular Safety Barrier App 20070034380 - Krawiec; Peter ; et al. | 2007-02-15 |
| Subsurface annular safety barrier Grant 7,140,447 - Krawiec , et al. November 28, 2 | 2006-11-28 |
| System and Method for Utilizing Nano-Scale Filler in Downhole Applications App 20050161212 - Leismer, Dwayne D. ; et al. | 2005-07-28 |
| Control line cutting tool and method Grant 6,789,627 - Leismer September 14, 2 | 2004-09-14 |
| Subsurface annular safety barrier App 20040129433 - Krawiec, Peter ; et al. | 2004-07-08 |
| Apparatus and method for completing a junction of plural wellbores Grant 6,732,801 - Ohmer , et al. May 11, 2 | 2004-05-11 |
| Apparatus and method for spacing out of offshore wells Grant 6,712,149 - Leismer , et al. March 30, 2 | 2004-03-30 |
| Downhole multiplexer and related methods Grant 6,491,102 - Leismer , et al. December 10, 2 | 2002-12-10 |
| Apparatus and method for completing a junction of plural wellbores App 20020121375 - Ohmer, Herve ; et al. | 2002-09-05 |
| Controlling activation of devices Grant 6,433,991 - Deaton , et al. August 13, 2 | 2002-08-13 |
| Apparatus and method for spacing out of offshore wells App 20020096331 - Leismer, Dwayne D. ; et al. | 2002-07-25 |
| Downhole multiplexer and related methods App 20020066574 - Leismer, Dwayne D. ; et al. | 2002-06-06 |
| Control line cutting tool and method App 20010045283 - Leismer, Dwayne D. | 2001-11-29 |
| Wellbore flow control device Grant 6,308,783 - Pringle , et al. October 30, 2 | 2001-10-30 |
| Pilot-operated pressure-equalizing mechanism for subsurface valve Grant 6,296,061 - Leismer October 2, 2 | 2001-10-02 |
| Wellbore flow control device App 20010015276 - Pringle, Ronald E. ; et al. | 2001-08-23 |
| Downhole multiplexer and related methods Grant 6,247,536 - Leismer , et al. June 19, 2 | 2001-06-19 |
| Selective re-entry tool for multiple tubing completions and method of using Grant 6,209,649 - Pringle , et al. April 3, 2 | 2001-04-03 |
| Expanded slip well anchor Grant 5,348,090 - Leismer September 20, 1 | 1994-09-20 |
| Emergency downhole disconnect tool Grant 5,323,853 - Leismer , et al. June 28, 1 | 1994-06-28 |
| Fail safe gas bias safety valve Grant 5,310,004 - Leismer May 10, 1 | 1994-05-10 |
| Selective hydraulic lock-out well safety valve and method Grant 5,167,284 - Leismer December 1, 1 | 1992-12-01 |
| Slip mechanism for a well tool Grant 5,101,897 - Leismer , et al. April 7, 1 | 1992-04-07 |
| Well tool hydrostatic release means Grant 4,976,317 - Leismer December 11, 1 | 1990-12-11 |
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