Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4633949 | Method of preventing precipitation of ferrous sulfide and sulfur during acidizing | — | 1987-01-06 |
| 4574050 | Method for preventing the precipitation of ferric compounds during the acid treatment of wells | Charles M. Maddin | 1986-03-04 |
| 4426296 | Method of acidizing wells using gelled acids | — | 1984-01-17 |
| 4317735 | Method of inhibiting crosslinking of aqueous xanthan gums in the presence of ferric acid ions | — | 1982-03-02 |