Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668475 | Induction logging sonde including a folded array apparatus having a plurality of receiver cowound coils and bucking coils | Timothy L. Long | 1997-09-16 |
| 5574371 | Method and apparatus for measuring mud resistivity in a wellbore including a probe having a bottom electrode for propagating a current from and to the bottom electrode in a direction approximately parallel to a longitudinal axis of the probe | Jacques R. Tabanou | 1996-11-12 |
| 4887464 | Measurement system and method for quantitatively determining the concentrations of a plurality of gases in drilling mud | Eli Tannenbaum, Trevor Burgess, Vassilios Kalessidis, John R. Williams, Klaus J. Zanker | 1989-12-19 |
| 4754641 | Method and apparatus for measurement of fluid flow in a drilling rig return line | Jacques Orban, Klaus J. Zanker | 1988-07-05 |