Assignee
PI INTERNAT LTD
VG·4 granted patents·15 citations·filing 2004–2009
Top patents by PatentIndex Score
4 records- 0162US7227762B1Fine-tuning circuit for the winding voltage of a transformerPI INTERNAT LTD·Filed 2006·Granted Jun 5, 2007·5 cites·4 claims
- 0251US7423891B2Inverter device utilizing three switches controlled in a concurrent manner in a resonant transformerPI INTERNAT LTD·Filed 2005·Granted Sep 9, 2008·7 cites·6 claims
- 0338US7944713B2Electric power conversion circuit having transfer gain variable by pulse-width modulationPI INTERNAT LTD·Filed 2009·Granted May 17, 2011·1 cites·27 claims
- 0436US7133299B2Zero voltage switching power conversion circuitPI INTERNAT LTD·Filed 2004·Granted Nov 7, 2006·2 cites·9 claims
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