Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7188673 | Process for reducing the production of water in oil wells | Luisa Chiappa, Maria Andrei, Thomas P. Lockhart, Giuseppe Maddinelli | 2007-03-13 |
| 7004253 | Process for reducing the production of water in oil wells | Luisa Chiappa, Maria Andrei, Thomas P. Lockhart, Giuseppe Maddinelli | 2006-02-28 |
| 5646092 | Pretreated clays, their preparation and use in formulation drilling muds not aggressive to layer clays | Stefano Carminati | 1997-07-08 |
| 5532211 | Aqueous drilling muds fluidified by means of zirconium and aluminum complexes | Stefano Carminati | 1996-07-02 |
| 5424283 | Drilling muds effective at high temperature | Fausto Miano, Antonello Pittalis, Thomas P. Lockhart, Stefano Carminati | 1995-06-13 |
| 5219476 | Gellable aqueous composition and its use in enhanced petroleum recovery | Thomas P. Lockhart | 1993-06-15 |
| 5143958 | Gellable aqueous composition and its use in enhanced petroleum | Thomas P. Lockhart | 1992-09-01 |
| 5131469 | Gellable aqueous compositions and its use in enhanced petroleum recovery | Thomas P. Lockhart | 1992-07-21 |
| 5132029 | Method and composition for reducing the permeability of a high-permeability zone in an oil reservoir | Thomas P. Lockart | 1992-07-21 |
| 5100932 | Gellable buffered aqueous composition and its use in enhanced petroleum recovery | Thomas P. Lockhart | 1992-03-31 |
| 4986356 | Method of removing polymer gels from a petroleum reservoir | Thomas P. Lockhart | 1991-01-22 |