Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6903547 | Method and apparatus for improving the vertical resolution of NMR logs | Richard F. Sigal, Ron Cherry, James E. Galford, John C. Bouton, Ridvan Akkurt +2 more | 2005-06-07 |
| 6646437 | System and method for clay typing using NMR-based porosity modeling | Dattatraya V. Chitale, George R. Coates, Richard F. Sigal | 2003-11-11 |
| 6541969 | Method and apparatus for improving the vertical resolution of NMR logs | Richard F. Sigal, Ron Cherry, James E. Galford, John C. Bouton, Ridvan Akkurt +2 more | 2003-04-01 |
| 6337568 | System and method for enhanced vertical resolution magnetic resonance imaging logs | Tarek A. Tutunji, Teruhiko Hagiwara | 2002-01-08 |
| 6255819 | System and method for geologically-enhanced magnetic resonance imaging logs | Tarek A. Tutunji, Teruhiko Hagiwara | 2001-07-03 |
| 5142472 | Method of measuring the resistivity and thickness of a thin underground layer using induction logging | — | 1992-08-25 |
| 4933638 | Borehole measurement of NMR characteristics of earth formations, and interpretations thereof | Robert L. Kleinberg, Douglas D. Griffin, Masafumi Fukuhara, Abdurranhman Sezginer, Weng C. Chew +2 more | 1990-06-12 |