Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5350528 | Method of supporting fractures in geological formations and hydraulic fluid composition for same | John A. Westland, Glenn S. Penny, R. Scott Stephens | 1994-09-27 |
| 5009797 | Method of supporting fractures in geologic formations and hydraulic fluid composition for same | Glenn S. Penny, Robert S. Stephens | 1991-04-23 |