Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8196664 | Actuating mechanism | — | 2012-06-12 |
| 8191629 | Pressure equalising devices | Stuart Gordon, Irvine Cardno Brown | 2012-06-05 |
| 7946347 | Injection valve | Irvine Cardno Brown | 2011-05-24 |
| 7748462 | Actuating mechanism | — | 2010-07-06 |
| 7520329 | Injection valve | Irvine Cardno Brown | 2009-04-21 |
| 7145471 | Sequential hydraulic control system for use in a subterranean well | Daniel George Purkis | 2006-12-05 |
| 6595292 | Method and apparatus for use with two or more hydraulic conduits deployed downhole | Daniel George Purkis, Stephen Reid | 2003-07-22 |
| 6585051 | Hydraulically operated fluid metering apparatus for use in a subterranean well, and associated methods | Daniel George Purkis, Jimmie R. Williamson, Jr. | 2003-07-01 |
| 6455466 | Compositions and methods for preventing leaf yellowing in plants | Antonio Ferrante, Donald A. Hunter, Wesley Hackett | 2002-09-24 |
| 6454012 | Tool string shock absorber | — | 2002-09-24 |
| 6109355 | Tool string shock absorber | — | 2000-08-29 |
| 5568836 | Release device for releasably coupling a first object to a second object | — | 1996-10-29 |
| 5535823 | Apparatus for amplifying a load | — | 1996-07-16 |
| 5379837 | Locking member for securing to a lock structure in a conduit | — | 1995-01-10 |
| 5253706 | Release mechanism | — | 1993-10-19 |
| 5088853 | Connector | — | 1992-02-18 |
| 5052485 | Jar mechanism | — | 1991-10-01 |
| 4364422 | Method of producing a nickel electrode | David J. Brown | 1982-12-21 |