Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061047 | Active positioning of downhole devices using spherical motors | Brian Cho, Hideyuki Kamei, Hitoshi Sugiyama, Paolo Primiero, Hitoshi Tashiro | 2011-11-22 |
| 8061048 | Apparatus for azimuth measurements using gyro sensors | Tsunehiko Imamura, Akira Kamiya, Shigeru Sato, Tsutomu Yamate | 2011-11-22 |