Inventor
Ka-Ngo Leung
Inventor
Hercules, CA, US
Overview
Patents· 40 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps38%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution15%
H05HPlasma technique14%
B82YSpecific uses or applications of nanostructures7%
G01VGeophysics4%
G21BFusion reactors4%
H05GX-ray technique4%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
H01QAntennas, i.e. radio aerials3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
8,971,473'Plasma driven neutron/gamma generator'20158,279,993'Gamma source for active interrogation'20127,639,770'Cylindrical neutron generator'20097,609,815'High brightness—multiple beamlets source for patterned X-ray production'20097,596,197'Gamma source for active interrogation'20097,362,842'Cylindrical neutron generator'20087,342,988'Neutron tubes'20087,298,091'Matching network for RF plasma source'20077,176,469'Negative ion source with external RF antenna'20077,139,349'Spherical neutron generator'20067,084,407'Ion beam extractor with counterbore'20066,985,553'Ultra-short ion and neutron pulse production'20066,974,950'Positive and negative ion beam merging system for neutral beam production'20056,975,072'Ion source with external RF antenna'20056,924,493'Ion beam lithography system'20056,922,019'Microwave ion source'20056,907,097'Cylindrical neutron generator'20056,888,146'Maskless micro-ion-beam reduction lithography system'20056,870,894'Compact neutron generator'20056,768,120'Focused electron and ion beam systems'20046,486,480'Plasma formed ion beam projection lithography system'20026,376,978'Quartz antenna with hollow conductor'20026,124,834'Glass antenna for RF-ion source operation'20006,094,012'Low energy spread ion source with a coaxial magnetic filter'20005,945,677'Focused ion beam system'19995,587,226'Porcelain-coated antenna for radio-frequency driven plasma source'19965,563,418'Broad beam ion implanter'19965,558,718'Pulsed source ion implantation apparatus and method'19965,517,084'Selective ion source'19965,365,070'Negative ion beam injection apparatus with magnetic shield and electron removal means'19945,198,677'Production of N.sup.+ ions from a multicusp ion beam apparatus'19935,136,171'Charge neutralization apparatus for ion implantation system'19924,994,706'Field free, directly heated lanthanum boride cathode'19914,795,940'Large area directly heated lanthanum hexaboride cathode structure having predetermined emission profile'19894,793,961'Method and source for producing a high concentration of positively charged molecular hydrogen or deuterium ions'19884,760,306'Electron emitting filaments for electron discharge devices'19884,725,449'Method of making radio frequency ion source antenna'19884,559,477'Three chamber negative ion source'19854,486,665'Negative ion source'19844,447,732'Ion source'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1993Patents assigned to US ENERGY (9)· patent assignee history
1984–2015Based in Hercules, CA, US· patent location history
1994–2012Patents assigned to UNIV CALIFORNIA (29)· patent assignee history
2012–2015Patents assigned to LEUNG KA-NGO (2)· patent assignee history
2012Patents assigned to BARLETTA WILLIAM A (1)· patent assignee history
2015Patents assigned to ANTOLAK ARLYN (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV CALIFORNIA | 29 | 1994–2012 |
| US ENERGY | 9 | 1984–1993 |
| LEUNG KA-NGOself | 2 | 2012–2015 |
| ANTOLAK ARLYN | 1 | 2015 |
| BARLETTA WILLIAM A | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hercules, California, US | 40 | 1984–2015 |