Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646092 | Pretreated clays, their preparation and use in formulation drilling muds not aggressive to layer clays | Giovanni Burrafato | 1997-07-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646092 | Pretreated clays, their preparation and use in formulation drilling muds not aggressive to layer clays | Giovanni Burrafato | 1997-07-08 |