Qualidyne Systems
Records under this name other than patents Qualidyne Systems holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 6 of 6 · Back to Qualidyne Systems
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,105,957 | Full wave bridge power inverter Term ended Term ended no later than Aug 8, 1998 · Low confidence | Term ended | Term ended no later than Aug 8, 1998 | Low confidence |
| US 4,201,957 | Power inverter having parallel switching elements Term ended Term ended no later than May 6, 2000 · Low confidence | Term ended | Term ended no later than May 6, 2000 | Low confidence |
| US 4,270,165 | Controller for d.c. current supplied by a plurality of parallel power supplies Term ended Term ended no later than May 26, 2001 · Low confidence | Term ended | Term ended no later than May 26, 2001 | Low confidence |
| US 4,720,775 | Inverter having saturating current transformer core for maintaining inverter current above minimum predetermined level Term ended Term ended no later than Jan 19, 2008 · Low confidence | Term ended | Term ended no later than Jan 19, 2008 | Low confidence |
| US 4,912,597 | Assembly of electric impedance elements Term ended Term ended no later than Mar 27, 2010 · Low confidence | Term ended | Term ended no later than Mar 27, 2010 | Low confidence |
| US 5,461,301 | Dual slope soft start for pulse width modulator controllers used in power converters Formerly held Term ended Term ended no later than Oct 24, 2015 · Low confidence | Term ended | Term ended no later than Oct 24, 2015 | Low confidence |