Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11646395 | High efficiency ultraviolet light emitting diode with electron tunnelling | Yitao Liao | 2023-05-09 |
| 11502220 | Ultraviolet light emitting diode structures and methods of manufacturing the same | Yitao Liao | 2022-11-15 |
| 10593830 | Ultraviolet light emitting diode structures and methods of manufacturing the same | Yitao Liao | 2020-03-17 |
| 10535801 | High efficiency ultraviolet light emitting diode with band structure potential fluctuations | Yitao Liao | 2020-01-14 |
| 10361343 | Ultraviolet light emitting diodes | Gordon C. Brummer, Denis M. Nothern | 2019-07-23 |
| 9780254 | Ultraviolet light emitting diode structures and methods of manufacturing the same | Yitao Liao | 2017-10-03 |
| 9627580 | High efficiency ultraviolet light emitting diode with band structure potential fluctuations | Yitao Liao | 2017-04-18 |
| 9318652 | Ultraviolet light emitting diode structures and methods of manufacturing the same | Yitao Liao | 2016-04-19 |
| 8987755 | Ultraviolet light emitting diode structures and methods of manufacturing the same | Yitao Liao | 2015-03-24 |
| 8723189 | Ultraviolet light emitting diode structures and methods of manufacturing the same | Yitao Liao | 2014-05-13 |
| 8592800 | Optical devices featuring nonpolar textured semiconductor layers | Adam Lyle Moldawer, Anirban Bhattacharyya, Joshua P. Abell | 2013-11-26 |
| 8257987 | Planarization of GaN by photoresist technique using an inductively coupled plasma | Adrian D. Williams | 2012-09-04 |
| 8247843 | GaN-based permeable base transistor and method of fabrication | Liberty L Gunter, Kanin Chu, Charles R. Eddy, Jr., Enrico Bellotti | 2012-08-21 |
| 8237175 | Optical devices featuring textured semiconductor layers | Jasper Cabalu | 2012-08-07 |
| RE42955 | GaN-based permeable base transistor and method of fabrication | Liberty L Gunter, Kanin Chu, Charles R. Eddy, Jr., Enrico Bellotti | 2011-11-22 |
| 8035113 | Optical devices featuring textured semiconductor layers | Jasper Cabalu | 2011-10-11 |
| 7777241 | Optical devices featuring textured semiconductor layers | Jasper Cabalu | 2010-08-17 |
| 7663157 | Semiconductor device having group III nitride buffer layer and growth layers | — | 2010-02-16 |
| 7413958 | GaN-based permeable base transistor and method of fabrication | Liberty L Gunter, Kanin Chu, Charles R. Eddy, Jr., Enrico Bellotti | 2008-08-19 |
| 7235819 | Semiconductor device having group III nitride buffer layer and growth layers | — | 2007-06-26 |
| 6953703 | Method of making a semiconductor device with exposure of sapphire substrate to activated nitrogen | — | 2005-10-11 |
| 6441716 | Semiconductor piezoresistor | Dharanipal Doppalapudi, Richard Mlcak, Harry L. Tuller | 2002-08-27 |
| 6275137 | Semiconductor piezoresistor | Dharanipal Doppalapudi, Richard Mlcak, Harry L. Tuller | 2001-08-14 |
| 6123768 | Method for the preparation and doping of highly insulating monocrystalline gallium nitride thin films | — | 2000-09-26 |
| 5847397 | Photodetectors using III-V nitrides | — | 1998-12-08 |