Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5009798 | Low fluid loss heavy brines containing hydroxyethyl cellulose | Roy F. House | 1991-04-23 |
| 4686051 | Method of increasing the rate of hydration of activated hydroxyethyl cellulose compositions | Roy F. House | 1987-08-11 |
| 4582614 | Compositions and method for thickening aqueous brines | Roy F. House | 1986-04-15 |
| 4566976 | Viscous heavy brines | Roy F. House | 1986-01-28 |
| 4496468 | Hydrated hydroxyethyl cellulose compositions | Roy F. House | 1985-01-29 |
| 4476032 | Method of increasing the rate of hydration of activated hydroethyl cellulose compositions | Roy F. House | 1984-10-09 |
| 4459214 | Viscous heavy brines | Roy F. House | 1984-07-10 |
| 4439333 | Heavy brine viscosifiers | Roy F. House | 1984-03-27 |
| 4427556 | Dispersible hydrophilic polymer compositions | Roy F. House | 1984-01-24 |
| 4420406 | Thickened heavy brines | Roy F. House | 1983-12-13 |
| 4392964 | Compositions and method for thickening aqueous brines | Roy F. House | 1983-07-12 |
| 4330414 | Dispersible hydrophilic polymer compositions | — | 1982-05-18 |