Inventor
CHO ALFRED Y
US38 patents
⚠️ This page may combine multiple inventors who share the name “CHO ALFRED Y”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AT & T BELL LAB
12 patentsUS5226053AJul 6, 1993
Light emitting diode
AT & T BELL LAB266 citations98
US5332690AJul 26, 1994
Method of making an integrated optical package for coupling optical fibers to devices with asymmetric light beams
AT & T BELL LAB48 citations96
US5265177ANov 23, 1993
Integrated optical package for coupling optical fibers to devices with asymmetric light beams
AT & T BELL LAB112 citations96
US5314838AMay 24, 1994
Method for making a semiconductor laser
AT & T BELL LAB39 citations92
US5311009AMay 10, 1994
Quantum well device for producing localized electron states for detectors and modulators
AT & T BELL LAB31 citations92
US5212395AMay 18, 1993
P-I-N photodiodes with transparent conductive contacts
AT & T BELL LAB26 citations92
US4471367ASep 11, 1984
MESFET Using a shallow junction gate structure on GaInAs
AT & T BELL LAB27 citations92
US4599728AJul 8, 1986
Multi-quantum well laser emitting at 1.5 μm
AT & T BELL LAB35 citations91
US4553155ANov 12, 1985
High speed bias-free photodetector
AT & T BELL LAB10 citations73
US4471370ASep 11, 1984
Majority carrier photodetector
AT & T BELL LAB14 citations73
US4999697AMar 12, 1991
Sequential-quenching resonant-tunneling transistor
AT & T BELL LAB17 citations72
US4534103AAug 13, 1985
Method of making self-aligned metal gate field effect transistors
AT & T BELL LAB5 citations58
BELL TELEPHONE LABOR INC
11 patentsUS4239955ADec 16, 1980
Effusion cells for molecular beam epitaxy apparatus
BELL TELEPHONE LABOR INC37 citations93
US4181544AJan 1, 1980
Molecular beam method for processing a plurality of substrates
BELL TELEPHONE LABOR INC37 citations93
US4186410AJan 29, 1980
Nonalloyed ohmic contacts to n-type Group III(a)-V(a) semiconductors
BELL TELEPHONE LABOR INC56 citations91
US4236166ANov 25, 1980
Vertical field effect transistor
BELL TELEPHONE LABOR INC41 citations89
US4249190AFeb 3, 1981
Floating gate vertical FET
BELL TELEPHONE LABOR INC22 citations82
US4236122ANov 25, 1980
Mesa devices fabricated on channeled substrates
BELL TELEPHONE LABOR INC24 citations82
US4137865AFeb 6, 1979
Molecular beam apparatus for processing a plurality of substrates
BELL TELEPHONE LABOR INC28 citations82
US4160261AJul 3, 1979
Mis heterojunction structures
BELL TELEPHONE LABOR INC29 citations80
US4231050AOct 28, 1980
Reduction of surface recombination current in GaAs devices
BELL TELEPHONE LABOR INC28 citations78
US4201998AMay 6, 1980
Devices with Schottky metal contacts filling a depression in a semi-conductor body
BELL TELEPHONE LABOR INC8 citations73
US4297783ANov 3, 1981
Method of fabricating GaAs devices utilizing a semi-insulating layer of AlGaAs in combination with an overlying masking layer
BELL TELEPHONE LABOR INC10 citations69
AMERICAN TELEPHONE & TELEGRAPH
8 patentsUS4686550AAug 11, 1987
Heterojunction semiconductor devices having a doping interface dipole
AMERICAN TELEPHONE & TELEGRAPH69 citations96
US4902912AFeb 20, 1990
Apparatus including resonant-tunneling device having multiple-peak current-voltage characteristics
AMERICAN TELEPHONE & TELEGRAPH27 citations89
US4739385AApr 19, 1988
Modulation-doped photodetector
AMERICAN TELEPHONE & TELEGRAPH23 citations81
US4679061AJul 7, 1987
Superlattice photoconductor
AMERICAN TELEPHONE & TELEGRAPH21 citations79
US4750025AJun 7, 1988
Depletion stop transistor
AMERICAN TELEPHONE & TELEGRAPH8 citations73
US4853753AAug 1, 1989
Resonant-tunneling device, and mode of device operation
AMERICAN TELEPHONE & TELEGRAPH16 citations72
US4745447AMay 17, 1988
Gallium arsenide on gallium indium arsenide Schottky barrier device
AMERICAN TELEPHONE & TELEGRAPH8 citations72
US4755860AJul 5, 1988
Avalanche photodetector
AMERICAN TELEPHONE & TELEGRAPH6 citations62
LUCENT TECHNOLOGIES INC
4 patentsUS5570386AOct 29, 1996
Semiconductor laser
LUCENT TECHNOLOGIES INC46 citations92
US5633193AMay 27, 1997
Method of making an InP-based device comprising semiconductor growth on a non-planar surface
LUCENT TECHNOLOGIES INC14 citations73
US5550854AAug 27, 1996
Binary stratified structures for periodically pumped semiconductor lasers
LUCENT TECHNOLOGIES INC10 citations70
US5588969ADec 31, 1996
Method for supplying phosphorous vapor
LUCENT TECHNOLOGIES INC5 citations62