Issued Patents All Time
Showing 76–92 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6466872 | Method for determination of apparent resistivities of anisotropic reservoirs | Berthold Kriegshauser, Pravin Gupta, Liming Yu | 2002-10-15 |
| 6218662 | Downhole carbon dioxide gas analyzer | Borislav J. Tchakarov, Rocco DiFoggio, Stanislav Forgang, James C. Hunziker, Marcelo F. Civarolo | 2001-04-17 |
| 6111409 | Nuclear magnetic reasonance fluid characterization apparatus and method for using with electric wireline formation testing instruments | Carl M. Edwards, Stanislav Forgang | 2000-08-29 |
| 6108605 | Low distortion digitally controlled transmitter for use in a well logging tool | Mark R. Doyle | 2000-08-22 |
| 6044325 | Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrument | Srinivasa Chakravarthy, Pravin Gupta, Raghu K. Chunduru, Berthold Kriegshauser | 2000-03-28 |
| 5999883 | Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrument | Pravin Gupta, Berthold Kriegshauser | 1999-12-07 |
| 5999884 | Method for determining the axial position of formation layer boundaries using measurements made by a transverse electromagnetic induction logging instrument | Berthold Kriegshauser, Pravin Gupta, Zeljko Jericevic | 1999-12-07 |
| 5854991 | Method for inversion processing of transverse electromagnetic induction well logging measurements | Pravin Gupta, Berthold Kriegshauser, Zeljko Jericevic | 1998-12-29 |
| 5781436 | Method and apparatus for transverse electromagnetic induction well logging | Stanislav Forgang, Leonty A. Tabarovsky | 1998-07-14 |
| 5680049 | Apparatus for measuring formation resistivity through a conductive casing having a coaxial tubing inserted therein | Robert William Gissler, Jacques Maissa, H. Wade Bullock, Peter Rellinger | 1997-10-21 |
| 5646561 | High performance current switch for borehole logging tools | Stanislav Forgang | 1997-07-08 |
| 5633722 | System for color and shade monitoring of fabrics or garments during processing | Eric Wasinger | 1997-05-27 |
| 5600246 | Method and apparatus for reducing signal-phase error in induction well logging instruments | Stanislav Forgang | 1997-02-04 |
| 5585727 | Apparatus for measuring resistivity of an earth formation using delta-sigma digital signal generation and sigma-delta digital detection system | Antonio Fabris | 1996-12-17 |
| 5543715 | Method and apparatus for measuring formation resistivity through casing using single-conductor electrical logging cable | Bension Sh. Singer, Hans-Martin Maurer, Kurt M. Strack | 1996-08-06 |
| 5173169 | Electroplating method and apparatus | Alexander J. Garrison | 1992-12-22 |
| 4641308 | Method of internal self-test of microprocessor using microcode | Stephen P. Sacarisen | 1987-02-03 |