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Class Information
Number: 257/E33.031
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 semiconductor body (epo) > Material of active region (epo) > Comprising only group iii-v compound (epo) > Including ternary or quaternary compound (e.g., algaas) (epo)
Description: This subclass is indented under subclass E33.023. This subclass is substantially the same in scope as ECLA classification H01L33/00C4D6.

Sub-classes under this class:

Class Number Class Name Patents
257/E33.033 Comprising nitride compound (e.g., algan) (epo) 108
257/E33.032 With heterojunction (e.g., algaas/gaas) (epo) 45

Patents under this class:

Patent Number Title Of Patent Date Issued
8674337 Gallium nitride based light emitting diode and fabrication method thereof Mar. 18, 2014
8648384 Light emitting device Feb. 11, 2014
8502242 Light emitting device, light emitting system having the same, and fabricating method of the light emitting device and the light emitting system Aug. 6, 2013
8441024 Semiconductor light emitting device and method for manufacturing the same May. 14, 2013
8420426 Method of manufacturing a light-emitting device Apr. 16, 2013
8404506 Single-photon source and method for the production and operation thereof Mar. 26, 2013
8354689 Light emitting devices having dopant front loaded tunnel barrier layers Jan. 15, 2013
8242538 Method and device for growing pseudomorphic A1InAsSb on InAs Aug. 14, 2012
8124993 Selective decomposition of nitride semiconductors to enhance LED light extraction Feb. 28, 2012
8076677 Semiconductor light emitting device Dec. 13, 2011
8076685 Nitride semiconductor device having current confining layer Dec. 13, 2011
8039370 Method of transferring a layer onto a liquid material Oct. 18, 2011
7943943 Light-emitting device and manufacturing method thereof May. 17, 2011
7935974 White light emitting device May. 3, 2011
7928448 III-nitride light emitting device including porous semiconductor layer Apr. 19, 2011
7884388 Light emitting diode having a first GaN layer and a first semiconductor layer each having a predetermined thickness and fabrication method therof Feb. 8, 2011
7868334 Semiconductor light emitting device Jan. 11, 2011
7859007 Light-emitting device and manufacturing method thereof Dec. 28, 2010
7842531 Gallium nitride-based device and method Nov. 30, 2010
7741654 Group III nitride semiconductor optical device Jun. 22, 2010
7622745 Epitaxial wafer for a semiconductor light emitting device, method for fabricating the same and semiconductor light emitting device Nov. 24, 2009
7601985 Semiconductor light-emitting device Oct. 13, 2009
7531827 Gallium nitride-based light emitting diode and fabrication method thereof May. 12, 2009
7518139 Gallium nitride-based device and method Apr. 14, 2009
7514720 White light emitting device Apr. 7, 2009
7374959 Two-wavelength semiconductor laser device and method of manufacturing the same May. 20, 2008

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