Inventor · disambiguated record
Geoffrey N. Drummond
Also filed as: DRUMMOND GEOFFREY · DRUMMOND GEOFFREY N
15 granted patents·1,012 citations·filing 1992–2014
95Inventor score
Top patents by PatentIndex Score
15 records- 0198US5718813AEnhanced reactive DC sputtering systemADVANCED ENERGY IND INC·Filed 1993·Granted Feb 17, 1998·269 cites·48 claims
- 0297US6024844AEnhanced reactive DC sputtering systemADVANCED ENERGY IND INC·Filed 1998·Granted Feb 15, 2000·114 cites·15 claims
- 0397US5427669AThin film DC plasma processing systemADVANCED ENERGY IND INC·Filed 1992·Granted Jun 27, 1995·180 cites·8 claims
- 0496US6001224AEnhanced reactive DC sputtering systemADVANCED ENERGY IND INC·Filed 1995·Granted Dec 14, 1999·99 cites·38 claims
- 0592US6521099B1Periodically clearing thin film plasma processing systemADVANCED ENERGY IND INC·Filed 2000·Granted Feb 18, 2003·36 cites·4 claims
- 0691US5535906AMulti-phase DC plasma processing systemADVANCED ENERGY IND INC·Filed 1995·Granted Jul 16, 1996·110 cites·66 claims
- 0789US5576939AEnhanced thin film DC plasma power supplyFiled 1995·Granted Nov 19, 1996·67 cites·14 claims
- 0881US6217717B1Periodically clearing thin film plasma processing systemADVANCED ENERGY IND INC·Filed 1999·Granted Apr 17, 2001·31 cites·12 claims
- 0975US6844802B2Parallel core electromagnetic deviceADVANCED ENERGY IND INC·Filed 2003·Granted Jan 18, 2005·20 cites·33 claims
- 1074US6633017B1System for plasma ignition by fast voltage riseADVANCED ENERGY IND INC·Filed 1998·Granted Oct 14, 2003·67 cites·18 claims
- 1159US6697265B2Wide range DC power supply utilizing voltage doubling output capacitors and inductive choke to extend full power load impedance rangeADVANCED ENERGY IND INC·Filed 2001·Granted Feb 24, 2004·14 cites·11 claims
- 1256US9450482B2Fault recovery for multi-phase power convertersDRUMMOND GEOFFREY N·Filed 2014·Granted Sep 20, 2016·1 cites·9 claims
- 1355US8462525B2Wide range DC power supply with bypassed multiplier circuitsDRUMMOND GEOFFREY N·Filed 2009·Granted Jun 11, 2013·4 cites·7 claims
- 1447US8572945B2High voltage multiple phase power supplyDRUMMOND GEOFFREY N·Filed 2009·Granted Nov 5, 2013·0 cites·5 claims
- 1542US7631482B2Multiple phase power supply for rocket enginesAEROJET GENERAL CO·Filed 2005·Granted Dec 15, 2009·0 cites·5 claims
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