Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
AC

Alfred Yi Cho — 76 Patents

ATAT&T: 53 patents #212 of 18,772Top 2%
BLBell Telephone Laboratories: 9 patents #11 of 1,445Top 1%
AGAgere Systems Guardian: 2 patents #139 of 810Top 20%
AGAgere Systems Optoelectronics Guardian: 1 patents #30 of 115Top 30%
AIAt & T Ipm: 1 patents #18 of 189Top 10%
YUYale University: 1 patents #732 of 1,662Top 45%
New Providence, NJ: #4 of 512 inventorsTop 1%
New Jersey: #385 of 69,400 inventorsTop 1%
Overall (All Time): #25,153 of 4,157,543Top 1%
76 Patents All Time

Issued Patents All Time

Showing 51–75 of 76 patents

Patent #TitleCo-InventorsDate
5265177 Integrated optical package for coupling optical fibers to devices with asymmetric light beams Deborah Lee Sivco, Daryoosh Vakhshoori 1993-11-23
5226053 Light emitting diode Erdmann F. Schubert, Li-Wei Tu, George J. Zydzik 1993-07-06
5212395 P-I-N photodiodes with transparent conductive contacts Paul R. Berger, Niloy K. Dutta, John E. Lopata, Henry M. O'Bryan, Jr., Deborah Lee Sivco +1 more 1993-05-18
4999697 Sequential-quenching resonant-tunneling transistor Federico Capasso, Susanta Sen 1991-03-12
4902912 Apparatus including resonant-tunneling device having multiple-peak current-voltage characteristics Federico Capasso, Susanta Sen, Masakazu Shoji, Deborah Lee Sivco 1990-02-20
4853753 Resonant-tunneling device, and mode of device operation Federico Capasso, Susanta Sen 1989-08-01
4755860 Avalanche photodetector Jeremy Allam, Federico Capasso 1988-07-05
4750025 Depletion stop transistor Chung Y. Chen 1988-06-07
4745447 Gallium arsenide on gallium indium arsenide Schottky barrier device Chung Y. Chen, Sung-Nee George Chu 1988-05-17
4739385 Modulation-doped photodetector Clyde George Bethea, Chung Y. Chen 1988-04-19
4686550 Heterojunction semiconductor devices having a doping interface dipole Federico Capasso 1987-08-11
4679061 Superlattice photoconductor Federico Capasso, Albert Lee Hutchinson, Khalid Mohammed 1987-07-07
4599728 Multi-quantum well laser emitting at 1.5 .mu.m Kambiz Alavi, Thomas P. Pearsall, Henryk Temkin 1986-07-08
4553155 High speed bias-free photodetector Chung Y. Chen 1985-11-12
4534103 Method of making self-aligned metal gate field effect transistors Bernard Glance, Daniel Lubzens, Martin Schneider 1985-08-13
4471367 MESFET Using a shallow junction gate structure on GaInAs Chung Y. Chen 1984-09-11
4471370 Majority carrier photodetector Chung Y. Chen 1984-09-11
4297783 Method of fabricating GaAs devices utilizing a semi-insulating layer of AlGaAs in combination with an overlying masking layer Horace C. Casey, Jr., Philip W. Foy 1981-11-03
4249190 Floating gate vertical FET 1981-02-03
4239955 Effusion cells for molecular beam epitaxy apparatus 1980-12-16
4236122 Mesa devices fabricated on channeled substrates Won-Tien Tsang 1980-11-25
4236166 Vertical field effect transistor James DiLorenzo 1980-11-25
4231050 Reduction of surface recombination current in GaAs devices Horace C. Casey, Jr., Philip W. Foy 1980-10-28
4201998 Devices with Schottky metal contacts filling a depression in a semi-conductor body Martin Schneider 1980-05-06
4186410 Nonalloyed ohmic contacts to n-type Group III(a)-V(a) semiconductors James V. Di Lorenzo, William C. Niehaus 1980-01-29