Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7334661 | Acoustic logging tool sleeve | Chung Chang, David Johnson, Vivian Pistre, Tarek M. Habashy, Smaine Zeroug +4 more | 2008-02-26 |
| 7257489 | Quadrupole acoustic shear wave logging while drilling | Chaur-Jian Hsu, Bikash K. Sinha, Sergey Asvadurov | 2007-08-14 |
| 6868036 | Oil well acoustic logging tool with baffles forming an acoustic waveguide | Canyun Wang | 2005-03-15 |
| 6739423 | Acoustic logging tool | Hitoshi Tashiro, Frank J. Morris, Hitoshi Sugiyama, David C. Hoyle, David Leslie +1 more | 2004-05-25 |
| 6671224 | Active reduction of tool borne noise in a sonic logging tool | — | 2003-12-30 |
| 6643221 | Structures and methods for damping tool waves particularly for acoustic logging tools | Chaur-Jian Hsu, Richard D. Joyce, Ralph M. D'Angelo, Jeffrey B. Aron, Pierre Campanac +4 more | 2003-11-04 |
| 6631327 | Quadrupole acoustic shear wave logging while drilling | Chaur-Jian Hsu, Bikash Sinha | 2003-10-07 |
| 6494288 | Acoustic logging tool | Hitoshi Tashiro, Frank J. Morris, Hitoshi Sugiyama, David C. Hoyle, David Leslie +1 more | 2002-12-17 |
| 6474439 | Dipole logging tool | David C. Hoyle, Hitoshi Tashiro, Benoit Froelich, Alain Brie, Hiroshi Hori +2 more | 2002-11-05 |
| 5617510 | Dependency graph solution for constraint systems | Walid T. Keyrouz, Glenn A. Kramer | 1997-04-01 |
| 5452238 | Method for solving geometric constraint systems | Glenn A. Kramer, Walid T. Keyrouz | 1995-09-19 |
| 5410496 | Using degrees of freedom analysis to solve topological constraint systems for construction geometry in a computer aided design (cad) | Craig Bolon, Mahesh Kanumury, Walid T. Keyrouz, Glenn A. Kramer, Eric Moore | 1995-04-25 |
| 5251290 | Modeling method for sorting dependencies among geometric entities | — | 1993-10-05 |