Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8348542 | Connection system for tubular members | — | 2013-01-08 |
| 8267436 | Arrow-shaped thread form for tubular connections | — | 2012-09-18 |
| 8136846 | Cylindrical tapered thread form for tubular connections | — | 2012-03-20 |
| 7836909 | Rotatable wedge valve mechanism and method for manufacture | — | 2010-11-23 |
| 7690697 | Thread form for tubular connections | — | 2010-04-06 |
| 7588269 | Z-shaped thread form for tubular connections | — | 2009-09-15 |
| 7484523 | Rotatable wedge cartridge valve mechanism and method for assembly and disassembly | — | 2009-02-03 |
| 7152700 | Dual wall drill string assembly | William G. Riel | 2006-12-26 |
| 7134514 | Dual wall drill string assembly | Bill Riel | 2006-11-14 |
| 7007984 | Hang-free thread design | — | 2006-03-07 |
| 6832789 | Threaded pipe connection with cylindrical metal-to-metal, high pressure containment seal | — | 2004-12-21 |
| 6722706 | Thread from with multifacited flanks | — | 2004-04-20 |
| 6254146 | Thread form with multifacited flanks | — | 2001-07-03 |