Inventor · disambiguated record
Alfred Yi Cho
Also filed as: CHO ALFRED Y · CHO ALFRED YI
84 granted patents·2 pending applications·2,846 citations·filing 1974–2004
99Inventor score
Files withLUCENT TECHNOLOGIES INC40BELL TELEPHONE LABOR INC17AT & T BELL LAB12AMERICAN TELEPHONE & TELEGRAPH8AT & T CORP3
Top patents by PatentIndex Score
86 records- 0198US5457709AUnipolar semiconductor laserAT & T CORP·Filed 1994·Granted Oct 10, 1995·156 cites·20 claims
- 0296US5226053ALight emitting diodeAT & T BELL LAB·Filed 1991·Granted Jul 6, 1993·266 cites·22 claims
- 0395US6690699B2Quantum cascade laser with relaxation-stabilized injectionLUCENT TECHNOLOGIES INC·Filed 2002·Granted Feb 10, 2004·72 cites·15 claims
- 0495US6501783B1Distributed feedback surface plasmon laserLUCENT TECHNOLOGIES INC·Filed 2000·Granted Dec 31, 2002·66 cites·17 claims
- 0594US6816530B2Nonlinear semiconductor light sourcesLUCENT TECHNOLOGIES INC·Filed 2002·Granted Nov 9, 2004·78 cites·19 claims
- 0694US6400744B1Apparatus comprising a quantum cascade laser having improved distributed feedback for single-mode operationLUCENT TECHNOLOGIES INC·Filed 2000·Granted Jun 4, 2002·77 cites·16 claims
- 0794US5265177AIntegrated optical package for coupling optical fibers to devices with asymmetric light beamsAT & T BELL LAB·Filed 1992·Granted Nov 23, 1993·112 cites·13 claims
- 0893US4686550AHeterojunction semiconductor devices having a doping interface dipoleAMERICAN TELEPHONE & TELEGRAPH·Filed 1984·Granted Aug 11, 1987·69 cites·29 claims
- 0991US6463088B1Mesa geometry semiconductor light emitter having chalcogenide dielectric coatingLUCENT TECHNOLOGIES INC·Filed 2000·Granted Oct 8, 2002·39 cites·13 claims
- 1090US6326646B1Mounting technology for intersubband light emittersLUCENT TECHNOLOGIES INC·Filed 1999·Granted Dec 4, 2001·95 cites·12 claims
- 1190US4236166AVertical field effect transistorBELL TELEPHONE LABOR INC·Filed 1979·Granted Nov 25, 1980·41 cites·11 claims
- 1288US6563852B1Self-mode-locking quantum cascade laserLUCENT TECHNOLOGIES INC·Filed 2000·Granted May 13, 2003·30 cites·17 claims
- 1388US5509025AUnipolar semiconductor laserAT & T CORP·Filed 1995·Granted Apr 16, 1996·80 cites·13 claims
- 1488US4599728AMulti-quantum well laser emitting at 1.5 μmAT & T BELL LAB·Filed 1983·Granted Jul 8, 1986·35 cites·12 claims
- 1587US4239955AEffusion cells for molecular beam epitaxy apparatusBELL TELEPHONE LABOR INC·Filed 1978·Granted Dec 16, 1980·37 cites·1 claims
- 1687US4181544AMolecular beam method for processing a plurality of substratesBELL TELEPHONE LABOR INC·Filed 1978·Granted Jan 1, 1980·37 cites·3 claims
- 1786US6134257ASolid state laser for operation in librational modesLUCENT TECHNOLOGIES INC·Filed 1998·Granted Oct 17, 2000·61 cites·15 claims
- 1886US4186410ANonalloyed ohmic contacts to n-type Group III(a)-V(a) semiconductorsBELL TELEPHONE LABOR INC·Filed 1978·Granted Jan 29, 1980·56 cites·11 claims
- 1985US6240114B1Multi-quantum well lasers with selectively doped barriersAGERE SYST OPTOELECTRONICS·Filed 1998·Granted May 29, 2001·65 cites·2 claims
- 2082US5936989AQuantum cascade laserLUCENT TECHNOLOGIES INC·Filed 1997·Granted Aug 10, 1999·57 cites·8 claims
- 2182US5332690AMethod of making an integrated optical package for coupling optical fibers to devices with asymmetric light beamsAT & T BELL LAB·Filed 1993·Granted Jul 26, 1994·48 cites·5 claims
- 2282US4137865AMolecular beam apparatus for processing a plurality of substratesBELL TELEPHONE LABOR INC·Filed 1976·Granted Feb 6, 1979·28 cites·3 claims
- 2382US3974002AMBE growth: gettering contaminants and fabricating heterostructure junction lasersBELL TELEPHONE LABOR INC·Filed 1974·Granted Aug 10, 1976·29 cites·10 claims
- 2480US5901168AArticle comprising an improved QC laserLUCENT TECHNOLOGIES INC·Filed 1997·Granted May 4, 1999·52 cites·11 claims
- 2579US4111725ASelective lift-off technique for fabricating gaas fetsBELL TELEPHONE LABOR INC·Filed 1977·Granted Sep 5, 1978·37 cites·2 claims
- 2678US6891187B2Optical devices with heavily doped multiple quantum wellsLUCENT TECHNOLOGIES INC·Filed 2002·Granted May 10, 2005·14 cites·22 claims
- 2778US6324199B1Intersubband light source with separate electron injector and reflector/extractorLUCENT TECHNOLOGIES INC·Filed 1998·Granted Nov 27, 2001·44 cites·13 claims
- 2878US4099305AFabrication of mesa devices by MBE growth over channeled substratesBELL TELEPHONE LABOR INC·Filed 1977·Granted Jul 11, 1978·31 cites·11 claims
- 2977US5570386ASemiconductor laserLUCENT TECHNOLOGIES INC·Filed 1995·Granted Oct 29, 1996·46 cites·10 claims
- 3076US6836499B2Optical amplifier for quantum cascade laserLUCENT TECHNOLOGIES INC·Filed 2002·Granted Dec 28, 2004·13 cites·17 claims
- 3176US4471367AMESFET Using a shallow junction gate structure on GaInAsAT & T BELL LAB·Filed 1981·Granted Sep 11, 1984·27 cites·5 claims
- 3276US4160261AMis heterojunction structuresBELL TELEPHONE LABOR INC·Filed 1978·Granted Jul 3, 1979·29 cites·9 claims
- 3376US3969164ANative oxide technique for preparing clean substrate surfacesBELL TELEPHONE LABOR INC·Filed 1975·Granted Jul 13, 1976·32 cites·1 claims
- 3475US5314838AMethod for making a semiconductor laserAT & T BELL LAB·Filed 1992·Granted May 24, 1994·39 cites·7 claims
- 3574US6137817AQuantum cascade laserLUCENT TECHNOLOGIES INC·Filed 1998·Granted Oct 24, 2000·40 cites·8 claims
- 3672US5502787AArticle comprising a semiconductor waveguide structureAT & T CORP·Filed 1995·Granted Mar 26, 1996·38 cites·8 claims
- 3771US6301282B1Long wavelength semiconductor lasers incorporating waveguides based on surface plasmonsLUCENT TECHNOLOGIES INC·Filed 1998·Granted Oct 9, 2001·33 cites·22 claims
- 3871US5311009AQuantum well device for producing localized electron states for detectors and modulatorsAT & T BELL LAB·Filed 1992·Granted May 10, 1994·31 cites·8 claims
- 3971US4902912AApparatus including resonant-tunneling device having multiple-peak current-voltage characteristicsAMERICAN TELEPHONE & TELEGRAPH·Filed 1989·Granted Feb 20, 1990·27 cites·20 claims
- 4071US4231050AReduction of surface recombination current in GaAs devicesBELL TELEPHONE LABOR INC·Filed 1979·Granted Oct 28, 1980·28 cites·8 claims
- 4170US5978397AArticle comprising an electric field-tunable semiconductor laserLUCENT TECHNOLOGIES INC·Filed 1997·Granted Nov 2, 1999·33 cites·11 claims
- 4270US4236122AMesa devices fabricated on channeled substratesBELL TELEPHONE LABOR INC·Filed 1978·Granted Nov 25, 1980·24 cites·4 claims
- 4369US4739385AModulation-doped photodetectorAMERICAN TELEPHONE & TELEGRAPH·Filed 1987·Granted Apr 19, 1988·23 cites·7 claims
- 4467US6265322B1Selective growth process for group III-nitride-based semiconductorsAGERE SYST GUARDIAN CORP·Filed 1999·Granted Jul 24, 2001·33 cites·10 claims
- 4567US6148012AMultiple wavelength quantum cascade light sourceLUCENT TECHNOLOGIES INC·Filed 1998·Granted Nov 14, 2000·30 cites·16 claims
- 4667US5745516AArticle comprising a unipolar superlattice laserLUCENT TECHNOLOGIES INC·Filed 1996·Granted Apr 28, 1998·32 cites·6 claims
- 4767US4249190AFloating gate vertical FETBELL TELEPHONE LABOR INC·Filed 1979·Granted Feb 3, 1981·22 cites·7 claims
- 4865US6940639B1Phase matched parametric light generation in monolithically integrated intersubband optical devicesLUCENT TECHNOLOGIES INC·Filed 2004·Granted Sep 6, 2005·11 cites·16 claims
- 4965US6278134B1Bi-directional unipolar semiconductor light sourceLUCENT TECHNOLOGIES INC·Filed 1999·Granted Aug 21, 2001·27 cites·16 claims
- 5064US6055257AQuantum cascade laserLUCENT TECHNOLOGIES INC·Filed 1998·Granted Apr 25, 2000·27 cites·10 claims
Showing the top 50 of 86 patent records by PatentIndex Score.
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