Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6422326 | Aphron-containing well drilling and servicing fluids of enhanced stability | Roy F. House | 2002-07-23 |
| 6390208 | Aphron-containing well drilling and servicing fluids | — | 2002-05-21 |