Issued Patents All Time
Showing 151–175 of 179 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7016026 | Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer | Arnold Walkow, Paul Bergren, Louis Perez | 2006-03-21 |
| 6997055 | System and method for determining formation fluid parameters using refractive index | — | 2006-02-14 |
| 6976392 | Atomic clock for downhole applications | Peter W. Reittinger | 2005-12-20 |
| 6938470 | Method and apparatus for downhole fluid characterization using flexural mechanical resonators | Arnold Walkow, Paul Bergren | 2005-09-06 |
| 6907797 | Method and apparatus for supercharging downhole sample tanks | — | 2005-06-21 |
| 6877332 | Downhole sorption cooling and heating in wireline logging and monitoring while drilling | — | 2005-04-12 |
| 6837105 | Atomic clock for downhole applications | Peter W. Reittinger | 2005-01-04 |
| 6798518 | Method and apparatus for a derivative spectrometer | Arnold Walkow, Paul Bergren | 2004-09-28 |
| 6714872 | Method and apparatus for quantifying progress of sample clean up with curve fitting | Jaedong Lee | 2004-03-30 |
| 6683681 | Method and apparatus for a downhole refractometer and attenuated reflectance spectrometer | Arnold Walkow, Paul Bergren | 2004-01-27 |
| 6672093 | Downhole sorption cooling and heating in wireline logging and monitoring while drilling | — | 2004-01-06 |
| 6627873 | Down hole gas analyzer method and apparatus | Borislav J. Tchakarov, Stanislav W. Forgang, Otto N. Fanini, Marcelo F. Civarolo, James C. Hunziker | 2003-09-30 |
| 6420869 | Method and apparatus for estimating NMR properties by near infrared spectra | — | 2002-07-16 |
| 6341498 | Downhole sorption cooling of electronics in wireline logging and monitoring while drilling | — | 2002-01-29 |
| 6218662 | Downhole carbon dioxide gas analyzer | Borislav J. Tchakarov, Stanislav Forgang, Otto N. Fanini, James C. Hunziker, Marcelo F. Civarolo | 2001-04-17 |
| 5984009 | Logging tool retrieval system | — | 1999-11-16 |
| 5668374 | Method for stabilizing near-infrared models and determining their applicability | Martha L. Ranc | 1997-09-16 |
| 5397899 | Method for improving infrared analysis estimations by automatically compensating for instrument instabilities | Maya Sadhukhan | 1995-03-14 |
| 5360972 | Method for improving chemometric estimations of properties of materials | Maya Sadhukhan, Martha L. Ranc | 1994-11-01 |
| 5212353 | Transducer system for use with borehole televiewer logging tool | Frederick Henry Kreisler Rambow | 1993-05-18 |
| 5179598 | Method for identifying and displaying particular features of an object | Kathryn Burleigh | 1993-01-12 |
| 5114567 | Method for determining the properties and amount of fluid in a sample | — | 1992-05-19 |
| 4920792 | Method for determining the amount of fluid in a core | — | 1990-05-01 |
| 4866983 | Analytical methods and apparatus for measuring the oil content of sponge core | Harold J. Vinegar, Pierre N. Tutunjian | 1989-09-19 |
| 4787983 | Method for determining the amount of oil in a sponge core | William E. Ellington, Kailash Dangayach | 1988-11-29 |