Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7788972 | Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids | Toru Terabayashi, Hideki Kinjo, Akihito Chikenji, Takeaki Nakayama, Oliver C. Mullins +3 more | 2010-09-07 |
| 7720323 | High-temperature downhole devices | Soon Seong Chee, Stephane Vannuffelen, Colin Wilson, Juei Igarashi, Khalid Ouaaba +1 more | 2010-05-18 |
| 7712223 | Apparatus for azimuth measurements using gyro sensors | Tsunehiko Imamura, Akira Kamiya, Shigeru Sato, Juei Igarashi | 2010-05-11 |
| 7694735 | Sonde | Svein Haheim, Robert Hughes Jones, Paul Jaques, Will Wason, Tatsuki Endo +2 more | 2010-04-13 |
| 7696901 | Methods and apparatus for photonic power conversion downhole | Colin Wilson, Soon Seong Chee, Les Nutt, Masahiro Kamata | 2010-04-13 |
| 7687769 | Methods and apparatus for multi dimension fluorescence spectrum measurement and correlations downhole | Kentaro Indo, Albert Ballard Andrews, Stephane Vannuffelen, Toru Terabayashi, Hideki Kinjo +1 more | 2010-03-30 |
| 7687770 | Methods and apparatus for multi dimension fluorescence spectrum measurement downhole | Kentaro Indo, Albert Ballard Andrews, Stephane Vannuffelen, Toru Terabayashi, Hideki Kinjo +1 more | 2010-03-30 |
| 7675030 | Logging system and method for in-situ fluids sensing through optical fiber with attenuation compensation | Stephane Vannuffelen, Khalid Ouaaba | 2010-03-09 |
| 7644611 | Downhole fluid analysis for production logging | Akira Kamiya, Gary Oddie, Stephane Vannuffelen, Oliver C. Mullins, Bhavani Raghuraman +8 more | 2010-01-12 |
| 7614294 | Systems and methods for downhole fluid compatibility | Peter S. Hegeman, Anthony Robert Holmes Goodwin, Moin Muhammad, Ricardo Vasques, Cosan Ayan +1 more | 2009-11-10 |
| 7609380 | Real-time calibration for downhole spectrometer | Stephane Vannuffelen, Takeaki Nakayama, Toru Terabayashi, Akira Otsuka, Kentaro Indo | 2009-10-27 |
| 7567485 | Method and apparatus for borehole sensing | Leslie Nutt, Masahiro Kamata | 2009-07-28 |
| 7515774 | Methods and apparatus for single fiber optical telemetry | Stephane Vannuffelen, Bruno Gayral, Soon Seong Chee, Colin Wilson | 2009-04-07 |
| 7511813 | Downhole spectral analysis tool | Stephane Vannuffelen, Kentaro Indo, Toru Terabayashi | 2009-03-31 |
| 7461547 | Methods and apparatus of downhole fluid analysis | Toru Terabayashi, Akihito Chikenji, Oliver C. Mullins, Andrew Kurkjian, Hani Elshahawi | 2008-12-09 |
| 7392697 | Apparatus for downhole fluids analysis utilizing micro electro mechanical system (MEMS) or other sensors | Akihito Chikenji, Veronique Nouaze, Toru Terabayashi, Tsutomu Sugimoto | 2008-07-01 |
| 7379180 | Method and apparatus for downhole spectral analysis of fluids | Stephane Vannuffelen, Akira Kamiya, Masaki Miyashita, Kentaro Indo, Reinhart Ciglenec | 2008-05-27 |
| 7336356 | Method and apparatus for downhole spectral analysis of fluids | Stephane Vannuffelen, Kentaro Indo, Go Fujisawa, Toru Terabayashi | 2008-02-26 |
| 7215416 | Method for measuring using optical fiber distributed sensor | Robert J. Schroeder, Rogerio Tadeu Ramos, Oliver C. Mullins | 2007-05-08 |
| 7187620 | Method and apparatus for borehole sensing | Les Nutt, Masahiro Kamata | 2007-03-06 |
| 7126680 | Method for measuring and calibrating measurements using optical fiber distributed sensor | Robert J. Schroeder, Rogerio Tadeu Ramos, Oliver C. Mullins | 2006-10-24 |
| 6946645 | Measuring system with sweeping comb filter and multiplexer | Jeffrey A. Tarvin, Robert J. Schroeder, Rogerio Tadeu Ramos | 2005-09-20 |
| 6437326 | Permanent optical sensor downhole fluid analysis systems | Oliver C. Mullins | 2002-08-20 |
| 6363180 | Methods and apparatus for enhancing dynamic range, sensitivity, accuracy, and resolution in fiber optic sensor systems | Robert J. Schroeder, Rogerio Tadeu Ramos, Eric Udd | 2002-03-26 |
| 6304686 | Methods and apparatus for measuring differential pressure with fiber optic sensor systems | Rogerio Tadeu Ramos, Raghu Madhavan, Robert J. Schroeder | 2001-10-16 |