Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8207094 | Wellbore treatment compositions containing foam extenders and methods of use thereof | Richard D. Hutchins, Ann M. W. Hoefer, Alejandro Pena | 2012-06-26 |
| 6613720 | Delayed blending of additives in well treatment fluids | Jean-Pierre Feraud, Michael D. Parris, Richard D. Hutchins, Erik Nelson, Keith Ingram Dismuke | 2003-09-02 |
| 6060436 | Delayed borate crosslinked fracturing fluid | Travis C. Snyder, Dustin L. Free, Brian Roland Ainley | 2000-05-09 |
| 5180500 | Chemical removal of thiourea from hydrochloric acid | — | 1993-01-19 |
| 4971775 | Process for removal of nickel from effluent containing EDTA | Edgar F. Hoy | 1990-11-20 |
| 4822494 | Chemical removal of thiourea from hydrochloric acid | — | 1989-04-18 |