Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5879562 | Water treatment process for reducing the hardness of an oilfield produced water | — | 1999-03-09 |
| 5879563 | Use of multiple treatment agents to reduce hardness of an oilfield produced water | — | 1999-03-09 |
| 5327971 | Pressure recorder carrier and method of use | David Ellwood | 1994-07-12 |