Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| RE39869 | High efficiency drill pipe | Michael Payne, Edmond I. Bailey | 2007-10-09 | |
| 6447025 | Oilfield tubular connection | — | 2002-09-10 | $17,612,000 |
| 6305723 | Tool joint and drill pipe made therefrom | Ronald W. Schutz, Edmond I. Bailey | 2001-10-23 | |
| 6244631 | High efficiency drill pipe | Michael Payne, Edmond I. Bailey | 2001-06-12 | |
| 5908212 | Ultra high torque double shoulder tool joint | Thomas E. Winship, Gerald E. Wilson | 1999-06-01 | |
| 5492375 | Drill pipe with improved connectors | — | 1996-02-20 | |
| 5433130 | Shoulder dressing apparatus | Terry L. Fite, Clarence J. Hayes | 1995-07-18 | |
| 5355968 | Tool joint stress relief groove | — | 1994-10-18 | |
| 4506432 | Method of connecting joints of drill pipe | — | 1985-03-26 | $2,865,000 |