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Class Information
Number: 257/E33.049
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Light emitting semiconductor devices having a potential or a surface barrier, processes or apparatus peculiar to the manufacture or treatment of such devices, or of parts thereof > Device characterized by their operation (epo) > Having heterojunction or graded gap (epo) > Comprising only group iii-v compound (epo)
Description: This subclass is indented under subclass E33.048. This subclass is substantially the same in scope as ECLA classification H01L33/00D3B.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8674337 Gallium nitride based light emitting diode and fabrication method thereof Mar. 18, 2014
8647901 Method for forming a nitride semiconductor layer and method for separating the nitride semiconductor layer from the substrate Feb. 11, 2014
8643037 Nitride semiconductor light emitting device Feb. 4, 2014
8633469 Group III nitride semiconductor light-emitting device Jan. 21, 2014
8633569 AlN inter-layers in III-N material grown on REO/silicon substrate Jan. 21, 2014
8524581 GaN epitaxy with migration enhancement and surface energy modification Sep. 3, 2013
8507364 N-type group III nitride-based compound semiconductor and production method therefor Aug. 13, 2013
8482027 Epitaxial wafer for light emitting diode Jul. 9, 2013
8415690 Epitaxial substrate for semiconductor element, semiconductor element, and method for producing epitaxial substrate for semiconductor element Apr. 9, 2013
8405102 Light emitting device, and lighting apparatus Mar. 26, 2013
8395165 Laterally contacted blue LED with superlattice current spreading layer Mar. 12, 2013
8390006 Light emitting device including a plurality of GaN-based reflective layers Mar. 5, 2013
8343824 Gallium nitride material processing and related device structures Jan. 1, 2013
8227284 Group-III nitride compound semiconductor light-emitting device, method of manufacturing group-III nitride compound semiconductor light-emitting device, and lamp Jul. 24, 2012
8178375 Method of determining compound ratio of compound semiconductor for light generating device May. 15, 2012
8154036 Nitride semiconductor device Apr. 10, 2012
8148714 Light-emitting device and method for producing light emitting device Apr. 3, 2012
8053806 Group III nitride semiconductor device and epitaxial substrate Nov. 8, 2011
8026534 III-V semiconductor device structures Sep. 27, 2011
7943964 Al.sub.xGa.sub.yIn.sub.1-x-yN crystal substrate, semiconductor device, and method of manufacturing the same May. 17, 2011
7928471 Group III-nitride growth on silicon or silicon germanium substrates and method and devices therefor Apr. 19, 2011
7879632 Method for manufacturing surface-emitting laser Feb. 1, 2011
7880187 Semiconductor light emitting device having narrow radiation spectrum Feb. 1, 2011
7867803 Method of fabricating light emitting device and compound semiconductor wafer and light emitting device Jan. 11, 2011
7847302 Blue LED with phosphor layer for producing white light and different phosphor in outer lens for reducing color temperature Dec. 7, 2010
7838890 Optical device and method for manufacturing optical device Nov. 23, 2010
7781866 Gallium nitride-based semiconductor stacked structure, method for fabrication thereof, gallium nitride-based semiconductor device and lamp using the device Aug. 24, 2010
7781796 Nitride semiconductor laser element Aug. 24, 2010
7732830 Compound semiconductor light-emitting diode Jun. 8, 2010
7714338 Semiconductor light emitter May. 11, 2010
7646033 Systems and methods for producing white-light light emitting diodes Jan. 12, 2010
7601985 Semiconductor light-emitting device Oct. 13, 2009
7564076 Semiconductor device and manufacturing method therefor Jul. 21, 2009
7531827 Gallium nitride-based light emitting diode and fabrication method thereof May. 12, 2009
7453091 Gallium nitride-based semiconductor device Nov. 18, 2008
7394114 Semiconductor device and manufacturing method therefor Jul. 1, 2008
7331566 Nitride semiconductor light emitting device Feb. 19, 2008
7247889 III-nitride material structures including silicon substrates Jul. 24, 2007
7235816 Semiconductor light emitter Jun. 26, 2007
7180147 Microelectronic structure with a high germanium concentration silicon germanium alloy including a graded buffer layer Feb. 20, 2007
7148514 Nitride semiconductor light emitting diode and fabrication method thereof Dec. 12, 2006
7001790 Light-emitting aluminum gallium indium nitride compound semiconductor device having an improved luminous intensity Feb. 21, 2006
6876006 Radiation source Apr. 5, 2005
6850013 Infrared light emitting diodes Feb. 1, 2005
6791103 Light-emitting gallium nitride-based compound semiconductor device Sep. 14, 2004
6695913 III-Nitride optoelectronic semiconductor device containing lattice mismatched III-Nitride semiconductor materials Feb. 24, 2004
6664571 Surface-emitting diode radiation source Dec. 16, 2003
6653163 Device for emitting electromagnetic radiation at a predetermined wavelength and a method of producing such device Nov. 25, 2003
6469323 Light-emitting gallium nitride-based compound semiconductor device Oct. 22, 2002
6384430 Light emitting diode May. 7, 2002

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