Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658861 | Delayed borate crosslinked fracturing fluid having increased temperature range | Erik Nelson, Vernon G. Constien | 1997-08-19 |
| 5633220 | High internal phase ratio water-in-oil emulsion fracturing fluid | Richard M. Hodge | 1997-05-27 |