Inventor
LEUNG KA-NGO
US41 patents
⚠️ This page may combine multiple inventors who share the name “LEUNG KA-NGO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNIV CALIFORNIA
28 patentsUS5558718ASep 24, 1996
Pulsed source ion implantation apparatus and method
UNIV CALIFORNIA181 citations99
US6924493B1Aug 2, 2005
Ion beam lithography system
UNIV CALIFORNIA84 citations98
US6907097B2Jun 14, 2005
Cylindrical neutron generator
UNIV CALIFORNIA45 citations96
US6768120B2Jul 27, 2004
Focused electron and ion beam systems
UNIV CALIFORNIA86 citations96
US6094012AJul 25, 2000
Low energy spread ion source with a coaxial magnetic filter
UNIV CALIFORNIA54 citations96
US5517084AMay 14, 1996
Selective ion source
UNIV CALIFORNIA69 citations96
US7298091B2Nov 20, 2007
Matching network for RF plasma source
UNIV CALIFORNIA95 citations94
US5945677AAug 31, 1999
Focused ion beam system
UNIV CALIFORNIA69 citations94
US7362842B2Apr 22, 2008
Cylindrical neutron generator
UNIV CALIFORNIA34 citations93
US5563418AOct 8, 1996
Broad beam ion implanter
UNIV CALIFORNIA33 citations93
US7084407B2Aug 1, 2006
Ion beam extractor with counterbore
UNIV CALIFORNIA29 citations92
US7342988B2Mar 11, 2008
Neutron tubes
UNIV CALIFORNIA30 citations91
US6870894B2Mar 22, 2005
Compact neutron generator
UNIV CALIFORNIA41 citations90
US7176469B2Feb 13, 2007
Negative ion source with external RF antenna
UNIV CALIFORNIA42 citations89
US6975072B2Dec 13, 2005
Ion source with external RF antenna
UNIV CALIFORNIA34 citations89
US5365070ANov 15, 1994
Negative ion beam injection apparatus with magnetic shield and electron removal means
UNIV CALIFORNIA47 citations88
US6888146B1May 3, 2005
Maskless micro-ion-beam reduction lithography system
UNIV CALIFORNIA31 citations87
US6486480B1Nov 26, 2002
Plasma formed ion beam projection lithography system
UNIV CALIFORNIA26 citations86
US6376978B1Apr 23, 2002
Quartz antenna with hollow conductor
UNIV CALIFORNIA24 citations86
US5587226ADec 24, 1996
Porcelain-coated antenna for radio-frequency driven plasma source
UNIV CALIFORNIA42 citations85
US7139349B2Nov 21, 2006
Spherical neutron generator
UNIV CALIFORNIA13 citations84
US7609815B2Oct 27, 2009
High brightness—multiple beamlets source for patterned X-ray production
UNIV CALIFORNIA11 citations82
US6922019B2Jul 26, 2005
Microwave ion source
UNIV CALIFORNIA14 citations79
US6985553B2Jan 10, 2006
Ultra-short ion and neutron pulse production
UNIV CALIFORNIA16 citations78
US6974950B2Dec 13, 2005
Positive and negative ion beam merging system for neutral beam production
UNIV CALIFORNIA8 citations73
US6124834ASep 26, 2000
Glass antenna for RF-ion source operation
UNIV CALIFORNIA14 citations73
US7639770B2Dec 29, 2009
Cylindrical neutron generator
UNIV CALIFORNIA4 citations63
US7596197B1Sep 29, 2009
Gamma source for active interrogation
UNIV CALIFORNIA0 citations49
US ENERGY
9 patentsUS4447732AMay 8, 1984
Ion source
US ENERGY64 citations95
US4793961ADec 27, 1988
Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions
US ENERGY33 citations92
US4725449AFeb 16, 1988
Method of making radio frequency ion source antenna
US ENERGY26 citations92
US4486665ADec 4, 1984
Negative ion source
US ENERGY38 citations92
US5198677AMar 30, 1993
Production of N+ ions from a multicusp ion beam apparatus
US ENERGY53 citations91
US4559477ADec 17, 1985
Three chamber negative ion source
US ENERGY29 citations88
US4760306AJul 26, 1988
Electron emitting filaments for electron discharge devices
US ENERGY18 citations71
US4994706AFeb 19, 1991
Field free, directly heated lanthanum boride cathode
US ENERGY13 citations68
US4795940AJan 3, 1989
Large area directly heated lanthanum hexaboride cathode structure having predetermined emission profile
US ENERGY17 citations64