Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6310426 | High resolution focused ultrasonic transducer, for LWD method of making and using same | James R. Birchak, Alvin B. Miller | 2001-10-30 |
| 6208585 | Acoustic LWD tool having receiver calibration capabilities | — | 2001-03-27 |
| 6098017 | Adjustable head assembly for ultrasonic logging tools that utilize a rotating sensor subassembly | Mack H. Brown, Frank H. McCurdy | 2000-08-01 |
| 5841734 | Rotating acoustic transducer head for cement bond evaluation tool | Thomas Ritter, James R. Birchak, Mack H. Brown, James Masino, John W. Minear | 1998-11-24 |
| 5763773 | Rotating multi-parameter bond tool | James R. Birchak, Batakrishna Mandal, John W. Minear | 1998-06-09 |
| 5182716 | Injection molding controller with controlled variable learning | John F. Dodds | 1993-01-26 |
| 5062785 | Injection molding controller with process variable learning | John F. Dodds | 1991-11-05 |