Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5275441 | Blast joint with torque transferring connector | — | 1994-01-04 |
| 5016921 | Durable blast joint with hydrostatic driver | — | 1991-05-21 |
| 4915177 | Blast joint for snubbing installation | — | 1990-04-10 |
| 4911479 | Durable blast joint | — | 1990-03-27 |
| 4889185 | Blast joint | Robert J. Uherek, Sr. | 1989-12-26 |
| 4734893 | Apparatus and method for transmitting downhole conditions to the surface | — | 1988-03-29 |
| 4726423 | Method for installing a blast joint | — | 1988-02-23 |
| 4685518 | Blast joint | — | 1987-08-11 |
| 4454598 | Drilling orientation tool | — | 1984-06-12 |
| 4377177 | Throttling mud choke apparatus | — | 1983-03-22 |
| 4371958 | Drilling orientation tool | — | 1983-02-01 |
| 4281678 | Throttling mud choke apparatus | — | 1981-08-04 |
| 4262343 | Pressure pulse detection apparatus | — | 1981-04-14 |
| 4257442 | Choke for controlling the flow of drilling mud | — | 1981-03-24 |
| 4235021 | Measuring while drilling tool | — | 1980-11-25 |
| 4224687 | Pressure pulse detection apparatus incorporating noise reduction feature | — | 1980-09-23 |
| 4190073 | Choke for controlling the flow of drilling mud | — | 1980-02-26 |
| 4184545 | Measuring and transmitting apparatus for use in a drill string | — | 1980-01-22 |