Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498035 | Pipe coupling | David L. Britten | 1996-03-12 |
| 5468029 | Pipe coupling | David L. Britten, Kevin J. Humphreys, Trent Michael Victor Kaiser | 1995-11-21 |
| 5423579 | Tubular coupling with metal to metal seal | Doyle E. Reeves, Donald J. Ortloff | 1995-06-13 |
| 5348350 | Pipe coupling | David L. Britten | 1994-09-20 |
| 5330239 | Pipe coupling | David L. Britten, Kevin J. Humphreys, Trent Michael Victor Kaiser | 1994-07-19 |
| 4822081 | Driveable threaded tubular connection | — | 1989-04-18 |
| 4662659 | Tubular joint with trapped mid-joint metal-to-metal seal having unequal tapers | K. Darrel Chelette, Donald J. Ortloff, Doyle E. Reeves | 1987-05-05 |
| 4600224 | Tubular connection having a chevron wedge thread | — | 1986-07-15 |
| 4600225 | Tubular connection having a parallel chevron thread | — | 1986-07-15 |
| 4570982 | Tubular joint with trapped mid-joint metal-to-metal seal | K. Darrel Chelette | 1986-02-18 |
| 4324049 | Gaging system and method | — | 1982-04-13 |
| RE30647 | Tubular connection | — | 1981-06-16 |
| 4244607 | Cylindrical threaded connection | — | 1981-01-13 |
| 4192533 | Dovetail connection for pin and box joints | — | 1980-03-11 |