Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6914538 | High-power well logging method and apparatus | Carl Dodge, Thomas E. Henderson, Francisco Velasquez | 2005-07-05 |
| 6469636 | High-power well logging method and apparatus | Carl Dodge, Thomas E. Henderson, Francisco Velasquez | 2002-10-22 |
| 4975979 | Three phase motor control for downhole logging tools | — | 1990-12-04 |
| 4884439 | Hydraulic circuit use in wireline formation tester | — | 1989-12-05 |
| 4843878 | Method and apparatus for instantaneously indicating permeability and horner plot slope relating to formation testing | Ernest H. Purfurst | 1989-07-04 |
| 4808925 | Three magnet casing collar locator | — | 1989-02-28 |