Inventor
DRUMMOND GEOFFREY N
US14 patents
⚠️ This page may combine multiple inventors who share the name “DRUMMOND GEOFFREY N”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ADVANCED ENERGY IND INC
9 patentsUS6024844AFeb 15, 2000
Enhanced reactive DC sputtering system
ADVANCED ENERGY IND INC114 citations98
US5718813AFeb 17, 1998
Enhanced reactive DC sputtering system
ADVANCED ENERGY IND INC269 citations98
US5427669AJun 27, 1995
Thin film DC plasma processing system
ADVANCED ENERGY IND INC180 citations98
US6001224ADec 14, 1999
Enhanced reactive DC sputtering system
ADVANCED ENERGY IND INC99 citations97
US5535906AJul 16, 1996
Multi-phase DC plasma processing system
ADVANCED ENERGY IND INC110 citations97
US6633017B1Oct 14, 2003
System for plasma ignition by fast voltage rise
ADVANCED ENERGY IND INC67 citations92
US6217717B1Apr 17, 2001
Periodically clearing thin film plasma processing system
ADVANCED ENERGY IND INC31 citations92
US6844802B2Jan 18, 2005
Parallel core electromagnetic device
ADVANCED ENERGY IND INC20 citations86
US6697265B2Feb 24, 2004
Wide range DC power supply utilizing voltage doubling output capacitors and inductive choke to extend full power load impedance range
ADVANCED ENERGY IND INC14 citations84
DRUMMOND GEOFFREY N
3 patentsUS8462525B2Jun 11, 2013
Wide range DC power supply with bypassed multiplier circuits
DRUMMOND GEOFFREY N4 citations60
US9450482B2Sep 20, 2016
Fault recovery for multi-phase power converters
DRUMMOND GEOFFREY N1 citations47
US8572945B2Nov 5, 2013
High voltage multiple phase power supply
DRUMMOND GEOFFREY N0 citations45