Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5942467 | Drilling fluid system containing a combination of hydrophilic carbon black/asphaltite and a refined fish oil/glycol mixture and related methods | Jerry Rayborn | 1999-08-24 |
| 5891832 | Drilling fluid additive containing a fish oil/glycol mixture and related methods | Jerry Rayborn | 1999-04-06 |
| 5843872 | Drilling fluid system and related methods | Jerry Rayborn | 1998-12-01 |