Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6899172 | Abrasion resistant frac head | Jerry Alan Johnson | 2005-05-31 |
| 6189629 | Lateral jet drilling system | Dwight N. Loree | 2001-02-20 |
| 5569385 | Food processing effluent rendering process and apparatus | Lynda C. O'Carroll, Colm D. O'Carroll, Alan W. Jones, Marilyn T. Matlock | 1996-10-29 |
| 5396956 | Well head isolation tool sealing nipple testing apparatus and method of pressure testing isolation tool sealing nipple seals when in position on a well | Bruce CHEREWYK, Albert Roesch | 1995-03-14 |
| 5285852 | Wellhead isolation tool and method of use thereof | — | 1994-02-15 |
| 5261487 | Packoff nipple | Albert Roesch | 1993-11-16 |
| 5103900 | High pressure adapter for well-heads | Albert Roesch | 1992-04-14 |
| 5025857 | Wellhead tubing and casing packer and installation and removal tool | — | 1991-06-25 |
| 5020590 | Back pressure plug tool | — | 1991-06-04 |
| 5012865 | Annular and concentric flow wellhead isolation tool | — | 1991-05-07 |
| 4993488 | Well casing packers | — | 1991-02-19 |
| 4993489 | Wellhead isolation tool | — | 1991-02-19 |
| 4991650 | Wellhead isolation tool | — | 1991-02-12 |
| 4691770 | Well casing packer | — | 1987-09-08 |
| 4657075 | Well head isolation tool | — | 1987-04-14 |
| 4632183 | Insertion drive system for tree savers | — | 1986-12-30 |
| 4601494 | Nipple insert | — | 1986-07-22 |