Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5892860 | Multi-parameter fiber optic sensor for use in harsh environments | Alan D. Kersey | 1999-04-06 |
| 5877426 | Bourdon tube pressure gauge with integral optical strain sensors for measuring tension or compressive strain | Arthur D. Hay, James Dunphy, Phillip E. Pruett | 1999-03-02 |
| 5844667 | Fiber optic pressure sensor with passive temperature compensation | — | 1998-12-01 |
| 5767411 | Apparatus for enhancing strain in intrinsic fiber optic sensors and packaging same for harsh environments | — | 1998-06-16 |
| 4958517 | Apparatus for measuring weight, torque and side force on a drill bit | — | 1990-09-25 |
| 4821563 | Apparatus for measuring weight, torque and side force on a drill bit | — | 1989-04-18 |
| 4674773 | Insulating coupling for drill collars and method of manufacture thereof | Frederick A. Stone | 1987-06-23 |
| 4589187 | Method of manufacturing an insulating coupling for drill collars | Frederick A. Stone | 1986-05-20 |