Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7322419 | Circulating sub and method | — | 2008-01-29 |
| 6655462 | Magnetic well cleaning apparatus | Paul Howlett | 2003-12-02 |
| 6497295 | Torque limiting tool | Paul Howlett | 2002-12-24 |
| 6453996 | Apparatus incorporating jet pump for well head cleaning | Paul Howlett, George Telfer | 2002-09-24 |
| 6454009 | Apparatus and method for cleaning well risers | Paul Howlett | 2002-09-24 |
| 6401813 | Wellhead cleanup tool | Paul Howlett | 2002-06-11 |
| 6347667 | Well clean-up tool with improved cleaning member | Paul Howlett | 2002-02-19 |
| 6343648 | Down-hole tool with detachable cleaning pads | Paul Howlett | 2002-02-05 |
| 6302214 | Apparatus and method for inflating packers in a drilling well | Paul Howlett | 2001-10-16 |
| 6279657 | Apparatus and method for circulating fluid in a well bore | Paul Howlett | 2001-08-28 |
| 6253861 | Circulation tool | Paul Howlett | 2001-07-03 |
| 6250387 | Apparatus for catching debris in a well-bore | Paul Howlett | 2001-06-26 |
| 6227291 | Compact well clean up tool with multifunction cleaning apparatus | Paul Howlett | 2001-05-08 |
| 6220357 | Downhole flow control tool | Paul Howlett | 2001-04-24 |
| 6152228 | Apparatus and method for circulating fluid in a borehole | — | 2000-11-28 |
| 6152220 | Down-hole tool with centralising component | Paul Howlett | 2000-11-28 |
| 6152221 | Apparatus with retractable cleaning members | Paul Howlett | 2000-11-28 |
| 6102060 | Detachable locking device for a control valve and method | Paul Howlett | 2000-08-15 |