Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5414673 | Sonic measurement while drilling | — | 1995-05-09 |
| 5390153 | Measuring while drilling employing cascaded transmission systems | — | 1995-02-14 |
| 5182730 | Method and apparatus for transmitting information in a borehole employing signal discrimination | — | 1993-01-26 |
| 5150333 | Method and apparatus for providing improved pressure pulse characteristics for measuring while drilling | — | 1992-09-22 |
| 5113379 | Method and apparatus for communicating between spaced locations in a borehole | — | 1992-05-12 |
| 5079750 | Method and apparatus for transmitting information in a borehole employing discrimination | — | 1992-01-07 |
| 4866680 | Method and apparatus for transmitting information in a borehole employing signal discrimination | — | 1989-09-12 |
| 4839870 | Pressure pulse generator system for measuring while drilling | — | 1989-06-13 |
| 4692911 | Methods and apparatus for reducing interfering effects in measurement while drilling operations | — | 1987-09-08 |
| 4689775 | Direct radiator system and methods for measuring during drilling operations | — | 1987-08-25 |
| 4676310 | Apparatus for transporting measuring and/or logging equipment in a borehole | Jacob Neufeld | 1987-06-30 |
| 4553226 | Systems, apparatus and methods for measuring while drilling | — | 1985-11-12 |
| 4520468 | Borehole measurement while drilling systems and methods | — | 1985-05-28 |
| 4416000 | System for employing high temperature batteries for making measurements in a borehole | — | 1983-11-15 |
| 4351037 | Systems, apparatus and methods for measuring while drilling | — | 1982-09-21 |
| 4181184 | Soft-wire conductor wellbore telemetry system and method | — | 1980-01-01 |