Refac Technology Development Corporation
Records under this name other than patents Refac Technology Development Corporation holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
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| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,039,891 | Incandescent display lamp Term ended Term ended no later than Aug 2, 1997 · Low confidence | Term ended | Term ended no later than Aug 2, 1997 | Low confidence |
| US 4,053,845 | Optically pumped laser amplifiers Formerly held Term ended Term ended no later than Oct 11, 1997 · Low confidence | Term ended | Term ended no later than Oct 11, 1997 | Low confidence |
| US 4,161,436 | Method of energizing a material Formerly held Term ended Term ended no later than Jul 17, 1999 · Low confidence | Term ended | Term ended no later than Jul 17, 1999 | Low confidence |
| US 4,317,578 | Keyless chucking system Formerly held Term ended Term ended no later than Mar 2, 2002 · Low confidence | Term ended | Term ended no later than Mar 2, 2002 | Low confidence |
| US 4,591,198 | Robotic end effectors Term ended Term ended no later than May 27, 2006 · Low confidence | Term ended | Term ended no later than May 27, 2006 | Low confidence |
| US 4,627,785 | Exchangeable multi-function end effector tools Term ended Term ended no later than Dec 9, 2006 · Low confidence | Term ended | Term ended no later than Dec 9, 2006 | Low confidence |
| US 4,638,231 | Robotic collision sensors and compliance devices Term ended Term ended no later than Jan 20, 2007 · Low confidence | Term ended | Term ended no later than Jan 20, 2007 | Low confidence |
| US 4,704,583 | Light amplifiers employing collisions to produce a population inversion Formerly held Term ended Term ended no later than Nov 3, 2007 · Low confidence | Term ended | Term ended no later than Nov 3, 2007 | Low confidence |
| US 4,723,353 | Exchangeable multi-function end effector tools Term ended Term ended no later than Feb 9, 2008 · Low confidence | Term ended | Term ended no later than Feb 9, 2008 | Low confidence |
| US 4,746,201 | Polarizing apparatus employing an optical element inclined at brewster's angle Formerly held Term ended Term ended no later than May 24, 2008 · Low confidence | Term ended | Term ended no later than May 24, 2008 | Low confidence |