Inventor · disambiguated record
Ka-Ngo Leung
Also filed as: LEUNG KA-NGO
41 granted patents·6 pending applications·1,552 citations·filing 1982–2022
98Inventor score
Top patents by PatentIndex Score
47 records- 0198US5558718APulsed source ion implantation apparatus and methodUNIV CALIFORNIA·Filed 1994·Granted Sep 24, 1996·181 cites·25 claims
- 0297US6924493B1Ion beam lithography systemUNIV CALIFORNIA·Filed 2000·Granted Aug 2, 2005·84 cites·14 claims
- 0396US7362842B2Cylindrical neutron generatorUNIV CALIFORNIA·Filed 2005·Granted Apr 22, 2008·34 cites·27 claims
- 0495US6768120B2Focused electron and ion beam systemsUNIV CALIFORNIA·Filed 2002·Granted Jul 27, 2004·86 cites·14 claims
- 0595US4447732AIon sourceUS ENERGY·Filed 1982·Granted May 8, 1984·64 cites·9 claims
- 0693US7298091B2Matching network for RF plasma sourceUNIV CALIFORNIA·Filed 2002·Granted Nov 20, 2007·95 cites·24 claims
- 0792US5517084ASelective ion sourceUNIV CALIFORNIA·Filed 1994·Granted May 14, 1996·69 cites·27 claims
- 0890US6907097B2Cylindrical neutron generatorUNIV CALIFORNIA·Filed 2002·Granted Jun 14, 2005·45 cites·30 claims
- 0990US5136171ACharge neutralization apparatus for ion implantation systemVARIAN ASSOCIATES·Filed 1991·Granted Aug 4, 1992·83 cites·48 claims
- 1090US4486665ANegative ion sourceUS ENERGY·Filed 1982·Granted Dec 4, 1984·38 cites·16 claims
- 1188US7176469B2Negative ion source with external RF antennaUNIV CALIFORNIA·Filed 2003·Granted Feb 13, 2007·42 cites·12 claims
- 1288US7084407B2Ion beam extractor with counterboreUNIV CALIFORNIA·Filed 2003·Granted Aug 1, 2006·29 cites·23 claims
- 1388US6094012ALow energy spread ion source with a coaxial magnetic filterUNIV CALIFORNIA·Filed 1998·Granted Jul 25, 2000·54 cites·20 claims
- 1488US4793961AMethod and source for producing a high concentration of positively charged molecular hydrogen or deuterium ionsUS ENERGY·Filed 1983·Granted Dec 27, 1988·33 cites·12 claims
- 1587US6975072B2Ion source with external RF antennaUNIV CALIFORNIA·Filed 2003·Granted Dec 13, 2005·34 cites·15 claims
- 1686US7609815B2High brightness—multiple beamlets source for patterned X-ray productionUNIV CALIFORNIA·Filed 2007·Granted Oct 27, 2009·11 cites·19 claims
- 1784US5198677AProduction of N+ ions from a multicusp ion beam apparatusUS ENERGY·Filed 1991·Granted Mar 30, 1993·53 cites·6 claims
- 1883US5945677AFocused ion beam systemUNIV CALIFORNIA·Filed 1999·Granted Aug 31, 1999·69 cites·20 claims
- 1983US4559477AThree chamber negative ion sourceUS ENERGY·Filed 1983·Granted Dec 17, 1985·29 cites·20 claims
- 2081US5365070ANegative ion beam injection apparatus with magnetic shield and electron removal meansUNIV CALIFORNIA·Filed 1992·Granted Nov 15, 1994·47 cites·40 claims
- 2179US6870894B2Compact neutron generatorUNIV CALIFORNIA·Filed 2003·Granted Mar 22, 2005·41 cites·19 claims
- 2279US5563418ABroad beam ion implanterUNIV CALIFORNIA·Filed 1995·Granted Oct 8, 1996·33 cites·16 claims
- 2379US4725449AMethod of making radio frequency ion source antennaUS ENERGY·Filed 1987·Granted Feb 16, 1988·26 cites·14 claims
- 2477US6985553B2Ultra-short ion and neutron pulse productionUNIV CALIFORNIA·Filed 2003·Granted Jan 10, 2006·16 cites·15 claims
- 2575US7342988B2Neutron tubesUNIV CALIFORNIA·Filed 2003·Granted Mar 11, 2008·30 cites·8 claims
- 2674US4760306AElectron emitting filaments for electron discharge devicesUS ENERGY·Filed 1983·Granted Jul 26, 1988·18 cites·19 claims
- 2773US6888146B1Maskless micro-ion-beam reduction lithography systemUNIV CALIFORNIA·Filed 1999·Granted May 3, 2005·31 cites·20 claims
- 2871US7139349B2Spherical neutron generatorUNIV CALIFORNIA·Filed 2002·Granted Nov 21, 2006·13 cites·15 claims
- 2969US7639770B2Cylindrical neutron generatorUNIV CALIFORNIA·Filed 2008·Granted Dec 29, 2009·4 cites·10 claims
- 3069US6486480B1Plasma formed ion beam projection lithography systemUNIV CALIFORNIA·Filed 1999·Granted Nov 26, 2002·26 cites·20 claims
- 3167US6922019B2Microwave ion sourceUNIV CALIFORNIA·Filed 2002·Granted Jul 26, 2005·14 cites·15 claims
- 3265US6376978B1Quartz antenna with hollow conductorUNIV CALIFORNIA·Filed 2000·Granted Apr 23, 2002·24 cites·15 claims
- 3365US5587226APorcelain-coated antenna for radio-frequency driven plasma sourceUNIV CALIFORNIA·Filed 1993·Granted Dec 24, 1996·42 cites·24 claims
- 3464US6974950B2Positive and negative ion beam merging system for neutral beam productionUNIV CALIFORNIA·Filed 2002·Granted Dec 13, 2005·8 cites·9 claims
- 3564US4795940ALarge area directly heated lanthanum hexaboride cathode structure having predetermined emission profileUS ENERGY·Filed 1987·Granted Jan 3, 1989·17 cites·14 claims
- 3660US4994706AField free, directly heated lanthanum boride cathodeUS ENERGY·Filed 1987·Granted Feb 19, 1991·13 cites·4 claims
- 3749US8971473B2Plasma driven neutron/gamma generatorLEUNG KA-NGO·Filed 2009·Granted Mar 3, 2015·2 cites·20 claims
- 3846US6124834AGlass antenna for RF-ion source operationUNIV CALIFORNIA·Filed 1998·Granted Sep 26, 2000·14 cites·14 claims
- 3946US2010025573A15 ns or less neutron and gamma pulse generatorUNIV CALIFORNIA·Filed 2007·Application pending·0 cites
- 4045US2008080659A1Neutron tubesLEUNG KA-NGO·Filed 2007·Application pending·0 cites
- 4143US2007242790A110B(d,n)11C REACTION BASED NEUTRON GENERATORUNIV CALIFORNIA·Filed 2007·Application pending·0 cites
- 4237US7596197B1Gamma source for active interrogationUNIV CALIFORNIA·Filed 2006·Granted Sep 29, 2009·0 cites·6 claims
- 4337US2004051053A1Universal pattern generator with multiplex addressingFiled 2003·Application pending·0 cites
- 4436US8279993B2Gamma source for active interrogationLEUNG KA-NGO·Filed 2009·Granted Oct 2, 2012·0 cites·9 claims
- 4534US2002150193A1Compact high flux neutron generatorFiled 2002·Application pending·0 cites
- 4633US12513812B2Compact D-Li neutron generator apparatus, system and method for the production of isotopesActinium LLC·Filed 2022·Granted Dec 30, 2025·0 cites·15 claims
- 4730US2012213319A1Fast Pulsed Neutron GeneratorKWAN JOE·Filed 2010·Application pending·0 cites
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