Quartztronics, Inc.
Records under this name other than patents Quartztronics, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,526,480 | Fluid density temperature measurement apparatus and method Term ended Term ended no later than Jul 2, 2005 · Low confidence | Term ended | Term ended no later than Jul 2, 2005 | Low confidence |
| US 4,535,638 | Resonator transducer system with temperature compensation Term ended Term ended no later than Aug 20, 2005 · Low confidence | Term ended | Term ended no later than Aug 20, 2005 | Low confidence |
| US 4,550,610 | Resonator pressure transducer Term ended Term ended no later than Nov 5, 2005 · Low confidence | Term ended | Term ended no later than Nov 5, 2005 | Low confidence |
| US 4,574,639 | Pressure force measurement apparatus and method Term ended Term ended no later than Mar 11, 2006 · Low confidence | Term ended | Term ended no later than Mar 11, 2006 | Low confidence |
| US 4,644,796 | Pressure measurement apparatus and method Term ended Term ended no later than Feb 24, 2007 · Low confidence | Term ended | Term ended no later than Feb 24, 2007 | Low confidence |
| US 4,644,803 | Force measurement apparatus and method Term ended Term ended no later than Feb 24, 2007 · Low confidence | Term ended | Term ended no later than Feb 24, 2007 | Low confidence |
| US 4,660,420 | AT-cut crystal resonator pressure transducer Term ended Term ended no later than Apr 28, 2007 · Low confidence | Term ended | Term ended no later than Apr 28, 2007 | Low confidence |
| US 4,754,646 | Resonator pressure transducer structure and method of manufacture Term ended Term ended no later than Jul 5, 2008 · Low confidence | Term ended | Term ended no later than Jul 5, 2008 | Low confidence |
| US 4,837,475 | Crystal resonator with low acceleration sensitivity and method of manufacture thereof Term ended Term ended no later than Jun 6, 2009 · Low confidence | Term ended | Term ended no later than Jun 6, 2009 | Low confidence |
| US 4,935,658 | Crystal resonator with low acceleration sensitivity and method of manufacture thereof Term ended Term ended no later than Jun 19, 2010 · Low confidence | Term ended | Term ended no later than Jun 19, 2010 | Low confidence |