Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10844303 | Method for the production of fuel oil | — | 2020-11-24 |
| 7198103 | Method for stimulating a petroleum well | — | 2007-04-03 |
| 6440330 | Sludge liquefaction process and agents | — | 2002-08-27 |
| 6120680 | Sludge liquefaction process and agents | — | 2000-09-19 |
| 5858247 | Sludge demulsification process and agents | — | 1999-01-12 |
| 5344817 | Downhole drilling spotting fluid composition and method | James R. Hayes | 1994-09-06 |
| 5002672 | Downhole drilling spotting fluid composition and method | James R. Hayes | 1991-03-26 |