Exploration Logging, Inc.
Records under this name other than patents Exploration Logging, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Back to Exploration Logging, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,216,536 | Transmitting well logging data Term ended Term ended no later than Aug 5, 2000 · Low confidence | Term ended | Term ended no later than Aug 5, 2000 | Low confidence |
| US 4,312,223 | Carrier system for positioning sensors adjacent a wire rope Term ended Term ended no later than Jan 26, 2002 · Low confidence | Term ended | Term ended no later than Jan 26, 2002 | Low confidence |
| US 4,336,564 | Solenoid control circuit Term ended Term ended no later than Jun 22, 2002 · Low confidence | Term ended | Term ended no later than Jun 22, 2002 | Low confidence |
| US 4,338,565 | Method and apparatus for measuring the movement of a spiral wound wire rope Term ended Term ended no later than Jul 6, 2002 · Low confidence | Term ended | Term ended no later than Jul 6, 2002 | Low confidence |
| US 4,356,629 | Method of making well logging apparatus Term ended Term ended no later than Nov 2, 2002 · Low confidence | Term ended | Term ended no later than Nov 2, 2002 | Low confidence |
| US 4,386,422 | Servo valve for well-logging telemetry Term ended Term ended no later than May 31, 2003 · Low confidence | Term ended | Term ended no later than May 31, 2003 | Low confidence |
| US 4,405,021 | Apparatus for well logging while drilling Term ended Term ended no later than Sep 20, 2003 · Low confidence | Term ended | Term ended no later than Sep 20, 2003 | Low confidence |
| US 4,483,393 | Well logging apparatus and method for making same Term ended Term ended no later than Nov 20, 2004 · Low confidence | Term ended | Term ended no later than Nov 20, 2004 | Low confidence |
| US 4,494,072 | Well logging apparatus with replaceable sensor carrying insulating sleeve disposed in rotation restrained position around a drill string Term ended Term ended no later than Jan 15, 2005 · Low confidence | Term ended | Term ended no later than Jan 15, 2005 | Low confidence |
| US 4,511,829 | Direct current control in inductive loads Term ended Term ended no later than Apr 16, 2005 · Low confidence | Term ended | Term ended no later than Apr 16, 2005 | Low confidence |