Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5713581 | Fibrous seal for blowout preventer | Stephen P. Simons, William David Breach | 1998-02-03 |
| 5542454 | Free flow low energy pipe protector | Stephen P. Simons | 1996-08-06 |
| 5465759 | Variable diameter pipe protector | Stephen Patrick Simmons | 1995-11-14 |
| 5430087 | Carbon black pair with different particle size and improved rubber stock | William David Breach | 1995-07-04 |
| 5364064 | Safety sub with asymmetrical wall elastomeric closure for retaining drilling fluids | Stephen P. Simons | 1994-11-15 |
| 5339864 | Safety sub for retaining drilling fluids | William L. Carbaugh | 1994-08-23 |
| 5294253 | Carbon black system and improved rubber stock | William David Breach | 1994-03-15 |
| 5180137 | Ram type blowout preventer having improved ram front packings | Stephen P. Simons | 1993-01-19 |
| 5100950 | Rubber and fluorocarbon micropowder composition | William David Breach | 1992-03-31 |