Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5755972 | Method for metal sulfate scale control in harsh oilfield conditions | William M. Hann, Barry Weinstein | 1998-05-26 |
| 5658464 | Method of inhibiting sulfate scale in aqueous systems using poly(amino acids) | William M. Hann, Yi H. Paik, Graham Swift | 1997-08-19 |
| 5277823 | Silica scale inhibition | William M. Hann, Judy H. Bardsley, Jan E. Shulman | 1994-01-11 |