Sierra Semiconductor
Records under this name other than patents Sierra Semiconductor holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,780,750 | Electrically alterable non-volatile memory device Formerly held Term ended Term ended no later than Oct 25, 2008 · Low confidence | Term ended | Term ended no later than Oct 25, 2008 | Low confidence |
| US 4,975,701 | Exponential gain control for nonlinear analog-to-digital converter Formerly held Term ended Term ended no later than Dec 4, 2010 · Low confidence | Term ended | Term ended no later than Dec 4, 2010 | Low confidence |
| US 5,006,817 | Rail-to-rail CMOS operational amplifier Formerly held Term ended Term ended no later than Apr 9, 2011 · Low confidence | Term ended | Term ended no later than Apr 9, 2011 | Low confidence |
| US 5,157,349 | Differential operational amplifier Formerly held Term ended Term ended no later than Oct 20, 2012 · Low confidence | Term ended | Term ended no later than Oct 20, 2012 | Low confidence |
| US 5,188,972 | Method for making bipolar transistor by self-aligning the emitter to the base contact diffusion Formerly held Term ended Term ended no later than Feb 23, 2013 · Low confidence | Term ended | Term ended no later than Feb 23, 2013 | Low confidence |
| US 5,204,854 | Adaptive hybrid Formerly held Term ended Term ended no later than Apr 20, 2013 · Low confidence | Term ended | Term ended no later than Apr 20, 2013 | Low confidence |
| US 5,221,890 | Reference generator Formerly held Term ended Term ended no later than Jun 22, 2013 · Low confidence | Term ended | Term ended no later than Jun 22, 2013 | Low confidence |
| US 5,258,714 | Virtual current sensing system Formerly held Term ended Term ended no later than Nov 2, 2013 · Low confidence | Term ended | Term ended no later than Nov 2, 2013 | Low confidence |
| US 5,258,761 | High resolution charge-redistribution A/D converter Term ended Term ended no later than Nov 2, 2013 · Low confidence | Term ended | Term ended no later than Nov 2, 2013 | Low confidence |
| US 5,332,935 | ECL and TTL to CMOS logic converter Formerly held Term ended Term ended no later than Jul 26, 2014 · Low confidence | Term ended | Term ended no later than Jul 26, 2014 | Low confidence |