Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 9632203 | Non-resonant logging tools with H-bridge switching | David G. Cory, Julius Kusuma, Yi-Qiao Song, Martin Hurlimann, Martin E. Poitzsch | 2017-04-25 | $42,000,000 |
| 8941383 | System and method for measuring borehole geometry while drilling | Nicholas J. Heaton, David T. Oliver, Luis E. Depavia, Yi-Qiao Song, Martin Hurlimann | 2015-01-27 | $55,433,000 |
| 8860413 | Nuclear magnetic resonance tool with movable magnets | Luis E. Depavia, Yi-Qiao Song, David T. Oliver | 2014-10-14 | $23,238,000 |
| 8794318 | Formation evaluation instrument and method | Edward Harrigan, Yves Barriol, Andrei I. Davydychev, Andrew Carnegie, Dean Homan +6 more | 2014-08-05 | $79,321,000 |