Opcon, Ltd.
Records under this name other than patents Opcon, 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 4,015,117 | Unbiased modulated photo sensing systems Term ended Term ended no later than Mar 29, 1997 · Low confidence | Term ended | Term ended no later than Mar 29, 1997 | Low confidence |
| US 4,065,724 | Balanced low impedance differential input line preamplifier Term ended Term ended no later than Dec 27, 1997 · Low confidence | Term ended | Term ended no later than Dec 27, 1997 | Low confidence |
| US 4,340,137 | Cant movement and aligning mechanism Term ended Term ended no later than Jul 20, 2002 · Low confidence | Term ended | Term ended no later than Jul 20, 2002 | Low confidence |
| US 4,515,336 | Ball and socket mount for optical sensing system source and/or detector devices Term ended Term ended no later than May 7, 2005 · Low confidence | Term ended | Term ended no later than May 7, 2005 | Low confidence |
| US 4,769,147 | Oil reclamation apparatus Formerly held Term ended Term ended no later than Sep 6, 2008 · Low confidence | Term ended | Term ended no later than Sep 6, 2008 | Low confidence |
| US 4,851,660 | Photoelectric compressed analog signal strength indicator Term ended Term ended no later than Jul 25, 2009 · Low confidence | Term ended | Term ended no later than Jul 25, 2009 | Low confidence |
| US 4,931,631 | Long range, thru-beam photoelectric alignment indicator Term ended Term ended no later than Jun 5, 2010 · Low confidence | Term ended | Term ended no later than Jun 5, 2010 | Low confidence |
| US 4,936,661 | Zoom lens with short back focal length Term ended Term ended no later than Jun 26, 2010 · Low confidence | Term ended | Term ended no later than Jun 26, 2010 | Low confidence |
| US 4,990,895 | Method and apparatus for testing photoelectric circuits Term ended Term ended no later than Feb 5, 2011 · Low confidence | Term ended | Term ended no later than Feb 5, 2011 | Low confidence |
| US 5,628,901 | Vessel for treating liquids Formerly held Term ended Term ended no later than May 13, 2017 · Low confidence | Term ended | Term ended no later than May 13, 2017 | Low confidence |