Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6453996 | Apparatus incorporating jet pump for well head cleaning | Mark Carmichael, George Telfer | 2002-09-24 |
| 6401813 | Wellhead cleanup tool | Mark Carmichael | 2002-06-11 |
| 6347667 | Well clean-up tool with improved cleaning member | Mark Carmichael | 2002-02-19 |
| 6343648 | Down-hole tool with detachable cleaning pads | Mark Carmichael | 2002-02-05 |
| 6302214 | Apparatus and method for inflating packers in a drilling well | Mark Carmichael | 2001-10-16 |
| 6279657 | Apparatus and method for circulating fluid in a well bore | Mark Carmichael | 2001-08-28 |
| 6253861 | Circulation tool | Mark Carmichael | 2001-07-03 |
| 6250387 | Apparatus for catching debris in a well-bore | Mark Carmichael | 2001-06-26 |
| 6227291 | Compact well clean up tool with multifunction cleaning apparatus | Mark Carmichael | 2001-05-08 |
| 6220357 | Downhole flow control tool | Mark Carmichael | 2001-04-24 |
| 6152220 | Down-hole tool with centralising component | Mark Carmichael | 2000-11-28 |
| 6152221 | Apparatus with retractable cleaning members | Mark Carmichael | 2000-11-28 |
| 6102060 | Detachable locking device for a control valve and method | Mark Carmichael | 2000-08-15 |