Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6283228 | Method for preserving core sample integrity | Pierre E. Collee, Steven R. Radford, William A. Mallow | 2001-09-04 |
| 5881825 | Method for preserving core sample integrity | Pierre E. Collee | 1999-03-16 |
| 5560438 | Method and composition for preserving core sample integrity using an encapsulating material | Pierre E. Collee | 1996-10-01 |
| 5546798 | Method and composition for preserving core sample integrity using a water soluble encapsulating material | Pierre E. Collee | 1996-08-20 |
| 5099930 | Drilling fluid methods and composition | William M. Dye, F. Martin Smith, Alphonse C. Perricone | 1992-03-31 |
| 5007489 | Drilling fluid methods and composition | William M. Dye, F. Martin Smith, Alphonse C. Perricone | 1991-04-16 |
| 4963273 | Modified non-polluting liquid phase shale swelling inhibition drilling fluid and method of using same | Alphonse C. Perricone, Dennis K. Clapper | 1990-10-16 |
| 4941981 | Modified non-polluting liquid phase shale swelling inhibition drilling fluid | Alphonse C. Perricone, Dennis K. Clapper | 1990-07-17 |
| 4830765 | Modified non-polluting liquid phase shale swelling inhibition drilling fluid and method of using same | Alphonse C. Perricone, Dennis K. Clapper | 1989-05-16 |
| 4309329 | Aqueous drilling fluid additive | James M. Lucas, Alphonse C. Perricone | 1982-01-05 |
| 4293427 | Drilling fluid containing a copolymer filtration control agent | James M. Lucas, Alphonse C. Perricone | 1981-10-06 |
| 4288582 | Aqueous drilling fluid additive, composition and process | James M. Lucas, Alphonse C. Perricone | 1981-09-08 |
| 4268400 | Aqueous drilling fluid additive, composition and process | James M. Lucas, Alphonse C. Perricone | 1981-05-19 |