Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7459219 | Items made of wear resistant materials | Billi Marie Rogers | 2008-12-02 |
| 6888088 | Hardfacing materials & methods | Billi Marie Rogers | 2005-05-03 |
| 6861612 | Methods for using a laser beam to apply wear-reducing material to tool joints | Billi Marie Rogers | 2005-03-01 |
| 6428858 | Wire for thermal spraying system | Billi Marie Rogers | 2002-08-06 |
| 5482580 | Joining of metals using a bulk amorphous intermediate layer | David M. Scruggs, William L. Johnson, Atakan Peker | 1996-01-09 |
| 4273159 | Earth boring apparatus with multiple welds | Sam Crews | 1981-06-16 |
| 4256518 | Welding and austenitizing earth boring apparatus | Sam Crews | 1981-03-17 |
| 4181845 | Apparatus for tempering the weld between a tool joint connector and a drill pipe tube | — | 1980-01-01 |