Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5065099 | Coil array for a high resolution induction logging tool and method of logging an earth formation | Robert W. Strickland | 1991-11-12 |
| 5045795 | Azimuthally oriented coil array for MWD resistivity logging | Stanley C. Gianzero, Roland E. Chemali, Shey-Min Su | 1991-09-03 |
| 5038107 | Method and apparatus for making induction measurements through casing | Stanley C. Gianzero, Roland E. Chemali, Shey-Min Su | 1991-08-06 |
| 4996489 | Laboratory technique for measuring complex dielectric constant of rock core samples | — | 1991-02-26 |
| 4720681 | Digital induction logging tool | — | 1988-01-19 |
| 4632484 | Connector for ceramic hybrid circuits for well-logging tools and method for connecting ceramic hybrid circuits for use in well-logging tools | — | 1986-12-30 |
| 4499421 | Digital induction logging system including means for generating a plurality of transmitter frequencies | — | 1985-02-12 |
| 4499422 | Digital induction logging tool including means for compensating for phase shift errors | — | 1985-02-12 |
| 4455529 | Digital induction logging tool including means for measuring phase quadrature components in a phase sensitive detector | — | 1984-06-19 |
| 4439831 | Digital induction logging system including autocalibration | — | 1984-03-27 |
| 4412207 | Digital induction logging tool including a floating point A/D | — | 1983-10-25 |