Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5627368 | Four-detector formation-density tool for use in cased and open holes | — | 1997-05-06 |
| 5591967 | Method and apparatus for determining neutron detector operability using gamma ray sources | — | 1997-01-07 |
| 5525797 | Formation density tool for use in cased and open holes | — | 1996-06-11 |
| 5486695 | Standoff compensation for nuclear logging while drilling systems | Ward E. Schultz | 1996-01-23 |
| 5469736 | Apparatus and method for measuring a borehole | — | 1995-11-28 |
| 5272336 | Temperature corrections of measurements made with scintillation detectors | — | 1993-12-21 |
| 5012091 | Production logging tool for measuring fluid densities | — | 1991-04-30 |
| 4849627 | Photoelectric lithology factor and method of measurement | — | 1989-07-18 |
| 4814611 | Apparatus for measuring borehole-compensated densities and lithology-dependent factors using one or more detectors | — | 1989-03-21 |
| 4710712 | Method and apparatus for measuring defects in ferromagnetic elements | James E. Bradfield, John E. Kahil, Mark S. Jaynes, Marvin Milewits, Curtis W. Bolton, III +2 more | 1987-12-01 |
| 4704580 | Method and apparatus for measuring the depth of local defects in ferromagnetic elements | James E. Bradfield | 1987-11-03 |
| 4698590 | Method and apparatus for measuring velocity of ferromagnetic tubing | Marvin Milewits | 1987-10-06 |
| 4578642 | Method and apparatus for measuring velocity of ferromagnetic tubing | Marvin Milewits | 1986-03-25 |