Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8446292 | Systems and methods for downhole instrument communication via power cable | — | 2013-05-21 |
| 8138622 | System and method for an AC powered downhole gauge with capacitive coupling | Dick L. Knox, Gordon Besser | 2012-03-20 |
| 8051912 | Armored flat cable signalling and instrument power acquisition | — | 2011-11-08 |
| 7686074 | Apparatus and method for active circuit protection of downhole electrical submersible pump monitoring gauges | Robert H. McCoy, Larry J. Parmeter, Gordon Besser | 2010-03-30 |
| 7248178 | RF communication with downhole equipment | — | 2007-07-24 |
| 6798338 | RF communication with downhole equipment | — | 2004-09-28 |
| 6781501 | Low external field inductor | — | 2004-08-24 |
| 6586900 | Method for boosting the output voltage of a variable frequency drive | Jerald R. Rider, John M. Leuthen, Dick L. Knox | 2003-07-01 |
| 6566769 | Three phase flat cable inductance balancer | — | 2003-05-20 |
| 4799041 | Recirculating analog to digital converter with auto-calibrating feature | — | 1989-01-17 |
| 4550263 | Waveform generator | — | 1985-10-29 |
| 4532434 | Waveform generator | — | 1985-07-30 |
| 4443713 | Waveform generator | — | 1984-04-17 |
| 4305274 | Waveform generator | — | 1981-12-15 |
| 4297745 | Gain ranging amplifier | — | 1981-10-27 |