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Class Information
Number: 257/E33.023
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)
Description: This subclass is indented under subclass E33.013. This subclass is substantially the same in scope as ECLA classification H01L33/00C4D.










Sub-classes under this class:

Class Number Class Name Patents
257/E33.024 Binary compound (e.g., gaas) (epo) 39
257/E33.029 Characterized by doping material (epo) 135
257/E33.031 Including ternary or quaternary compound (e.g., algaas) (epo) 26
257/E33.026 Ternary or quaternary compound (e.g., algaas) (epo) 72


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8680534 Vertical light emitting diodes (LED) having metal substrate and spin coated phosphor layer for producing white light Mar. 25, 2014
8680548 Semiconductor light emitting device and method of fabricating semiconductor light emitting device Mar. 25, 2014
8680571 Gallium nitride based light emitting diode Mar. 25, 2014
8676002 Method of producing a photonic device and corresponding photonic device Mar. 18, 2014
8674398 Group III nitride semiconductor light emitting device and production method thereof, and lamp Mar. 18, 2014
8674375 Roughened high refractive index layer/LED for high light extraction Mar. 18, 2014
8659029 Low contact resistance semiconductor structure and method of fabricating the same Feb. 25, 2014
8659039 Semiconductor light emitting diode Feb. 25, 2014
8647901 Method for forming a nitride semiconductor layer and method for separating the nitride semiconductor layer from the substrate Feb. 11, 2014
8648378 Nitride-based semiconductor device and method for fabricating the same Feb. 11, 2014
8643023 Light emitting diode, light emitting diode lamp, and lighting apparatus Feb. 4, 2014
8643022 Light emitting diodes and method for manufacturing the same Feb. 4, 2014
8642992 Group III nitride compound semiconductor light emitting device Feb. 4, 2014
8637895 Semiconductor light emitting device having a high resistive layer Jan. 28, 2014
8637901 Low-defect density gallium nitride semiconductor structures and devices thereof Jan. 28, 2014
8637960 Nitride semiconductor substrate Jan. 28, 2014
8629468 Method for manufacturing light emitting device and light emitting device Jan. 14, 2014
8624220 Nitride semiconductor Jan. 7, 2014
8618564 High efficiency light emitting diodes Dec. 31, 2013
8610167 Group III nitride compound semiconductor light-emitting device and method for producing the same Dec. 17, 2013
8598685 GaN single crystal substrate and method of manufacturing thereof and GaN-based semiconductor device and method of manufacturing thereof Dec. 3, 2013
8597967 Method and system for dicing substrates containing gallium and nitrogen material Dec. 3, 2013
8597961 Method for improving internal quantum efficiency of group-III nitride-based light emitting device Dec. 3, 2013
8592822 Light emitting device and lighting apparatus Nov. 26, 2013
8581283 Photoelectric device having group III nitride semiconductor Nov. 12, 2013
8569085 Photoelectrochemical etching for chip shaping of light emitting diodes Oct. 29, 2013
8563997 Semiconductor light emitting device Oct. 22, 2013
8552465 Method for reducing stress in epitaxial growth Oct. 8, 2013
8541253 III-nitride semiconductor laser device, and method of fabricating the III-nitride semiconductor laser device Sep. 24, 2013
8525195 Semiconductor light emitting device Sep. 3, 2013
8513683 Optical integrated semiconductor light emitting device Aug. 20, 2013
8513040 Method for manufacturing display device Aug. 20, 2013
8507305 Group-III nitride semiconductor laser device, method of fabricating group-III nitride semiconductor laser device, and epitaxial substrate Aug. 13, 2013
8507929 Semiconductor light emitting device including graded region Aug. 13, 2013
8507891 Group III nitride semiconductor light-emitting device and production method therefor Aug. 13, 2013
8494020 Semiconductor light emitting device, optical pickup unit and information recording/reproduction apparatus Jul. 23, 2013
8492787 Light-emitting device Jul. 23, 2013
8486738 Light emitting device having auto-cloning photonic crystal structures and manufacturing method thereof Jul. 16, 2013
8487317 GaN semiconductor device Jul. 16, 2013
8482027 Epitaxial wafer for light emitting diode Jul. 9, 2013
8476649 Solid state lighting devices with accessible electrodes and methods of manufacturing Jul. 2, 2013
8470626 Method of fabricating light emitting diode Jun. 25, 2013
8455882 High efficiency LEDs Jun. 4, 2013
8450748 Solid state light emitting device May. 28, 2013
8450767 Light-emitting device May. 28, 2013
8435880 Method for manufacturing semiconductor device and semiconductor device May. 7, 2013
8415707 Group III nitride semiconductor device Apr. 9, 2013
8415690 Epitaxial substrate for semiconductor element, semiconductor element, and method for producing epitaxial substrate for semiconductor element Apr. 9, 2013
8415654 Low resistance ultraviolet light emitting device and method of fabricating the same Apr. 9, 2013
8399876 Semiconductor dies, light-emitting devices, methods of manufacturing and methods of generating multi-wavelength light Mar. 19, 2013

1 2 3 4










 
 
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