Sentrol Systems, Ltd.
Records under this name other than patents Sentrol Systems, Ltd. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 3,936,189 | On-line system for monitoring the color, opacity and brightness of a moving web Term ended Term ended no later than Feb 3, 1996 · Low confidence | Term ended | Term ended no later than Feb 3, 1996 | Low confidence |
| US 3,980,517 | Continuous on-machine control of bleaching chemicals Term ended Term ended no later than Sep 14, 1996 · Low confidence | Term ended | Term ended no later than Sep 14, 1996 | Low confidence |
| US 4,015,904 | Optical shoe assembly for use with a multi-sensor optical head Term ended Term ended no later than Apr 5, 1997 · Low confidence | Term ended | Term ended no later than Apr 5, 1997 | Low confidence |
| US 4,081,676 | On-line system for monitoring sheet material additives Term ended Term ended no later than Mar 28, 1998 · Low confidence | Term ended | Term ended no later than Mar 28, 1998 | Low confidence |
| US 4,097,153 | Method and apparatus for measuring the electrophoretic mobility of suspended particles Term ended Term ended no later than Jun 27, 1998 · Low confidence | Term ended | Term ended no later than Jun 27, 1998 | Low confidence |
| US 4,171,918 | Infrared moisture measuring apparatus Term ended Term ended no later than Oct 23, 1999 · Low confidence | Term ended | Term ended no later than Oct 23, 1999 | Low confidence |
| US 4,256,131 | Feedback color control system Term ended Term ended no later than Mar 17, 2001 · Low confidence | Term ended | Term ended no later than Mar 17, 2001 | Low confidence |
| US 4,319,185 | Delay line microwave moisture measuring apparatus Term ended Term ended no later than Mar 9, 2002 · Low confidence | Term ended | Term ended no later than Mar 9, 2002 | Low confidence |
| US 4,439,038 | Method and apparatus for measuring and controlling the color of a moving web Term ended Term ended no later than Mar 27, 2004 · Low confidence | Term ended | Term ended no later than Mar 27, 2004 | Low confidence |
| US 4,484,133 | Microwave moisture sensor Term ended Term ended no later than Nov 20, 2004 · Low confidence | Term ended | Term ended no later than Nov 20, 2004 | Low confidence |