Issued Patents All Time
Showing 1–25 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12104933 | Optical sensor and physical quantity measurement device | Ayumu Sakamoto, Keiichi Fujita, Ken Ogawa | 2024-10-01 |
| 10746014 | Method and system for monitoring a condition of an elastic element used in a downhole tool | Masaei Ito, Manuel Marya, Osamu Osawa | 2020-08-18 |
| 10573574 | Devices for cooling and power | John Ullo, Jiro Takeda | 2020-02-25 |
| 10355664 | Resonator applications for langasite and its isomorphs | Mihir S. Patel, Bikash K. Sinha | 2019-07-16 |
| 9874655 | Fluid analyzer using absorption spectroscopy | Shigeo Daito | 2018-01-23 |
| 9611735 | Image-based measurement of a fluid | Theodorus Tjhang, Yutaka Imasato, Akira Kamiya, Kazumasa Kanayama | 2017-04-04 |
| 9074461 | Fluid analyzer with plasma emission unit and method of using same | Shigeo Daito, Shunsuke Yamazaki | 2015-07-07 |
| 9051821 | Microfluidic methods and apparatus to perform in situ chemical detection | Wei-Heong Tan, Christopher Harrison | 2015-06-09 |
| 8925379 | Downhole sensor systems and methods thereof | Toru Terabayashi, Ricardo Vasques, Kazumasa Kanayama, Yuji Hosoda, Stephane Briquet | 2015-01-06 |
| 8904859 | Detecting gas compounds for downhole fluid analysis | Jimmy Lawrence, Tim Jones, Kentaro Indo, Noriyuki Matsumoto, Michael Mallari Toribio +6 more | 2014-12-09 |
| 8528396 | Phase separation detection in downhole fluid sampling | Xu Wu, Toru Terabayashi, Ricardo Vasques, Chengli Dong, Peter S. Hegeman | 2013-09-10 |
| 8397561 | Downhole sensor systems and methods thereof | Toru Terabayashi, Ricardo Vasques, Kazumasa Kanayama, Yuji Hosoda, Stephane Briquet | 2013-03-19 |
| 8297351 | Downhole sensing system using carbon nanotube FET | Hidetoshi Yoshiuchi, John Ullo, Kazuhiko Matsumoto | 2012-10-30 |
| 8294332 | Pressure transducer | Noriyuki Matsumoto, Bikash K. Sinha, Shigeru Sato, Anthony Veneruso, Jimmy Lawrence +2 more | 2012-10-23 |
| 8256283 | 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 | 2012-09-04 |
| 8200436 | Method and apparatus for wellbore survey using inertial sensors | Shigeru Sato, Juei Igarashi, Charles Woodburn | 2012-06-12 |
| 8082780 | Methods and apparatus for decreasing a density of a downhole fluid | Stephane Vannuffelen | 2011-12-27 |
| 8061048 | Apparatus for azimuth measurements using gyro sensors | Tsunehiko Imamura, Akira Kamiya, Shigeru Sato, Juei Igarashi | 2011-11-22 |
| 7937223 | Downhole fluid analysis | Reinhart Ciglenec, Stephane Vannuffelen, Akira Kamiya, Steven G. Villareal | 2011-05-03 |
| 7933018 | Spectral imaging for downhole fluid characterization | Stephane Vannuffelen, Ahmed Hammami, Toru Terabayashi, Terry Sopkow, John Ratulowski +6 more | 2011-04-26 |
| 7929812 | Methods and apparatus for single fiber optical telemetry | Stephane Vannuffelen, Bruno Gayral, Soon Seong Chee, Colin Wilson | 2011-04-19 |
| 7894297 | Methods and apparatus for borehole sensing including downhole tension sensing | Les Nutt, Masahiro Kamata | 2011-02-22 |
| 7832276 | Pressure measuring device and method | Xu Wu, Arthur H. Hartog, Dimitri Cadere | 2010-11-16 |
| 7801704 | Method and system for azimuth measurements using gyro sensors | Shigeru Sato, Juei Igarashi, Akira Kamiya | 2010-09-21 |
| 7793712 | Downhole tool | Hiroshi Inoue, Jiro Takeda, Yukio Sudo, Emmanuel Desroques, Satoru Umemoto | 2010-09-14 |