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Class Information
Number: 257/E33.008
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) > Shape or structure (e.g., shape of epitaxial layer) (epo) > Multiple quantum well structure (epo)
Description: This subclass is indented under subclass E33.005. This subclass is substantially the same in scope as ECLA classification H01L33/00C3D.

Sub-classes under this class:

Class Number Class Name Patents
257/E33.01 Doped superlattice (e.g., nipi superlattice) (epo) 39
257/E33.009 Including, apart from doping materials or other only impurities, group iv element (e.g., si-sige superlattice) (epo) 37

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8709839 Method of fabricating semiconductor light emitting device Apr. 29, 2014
8692228 Semiconductor light emitting device and wafer Apr. 8, 2014
8692287 Nitride semiconductor device, nitride semiconductor wafer, and method for manufacturing nitride semiconductor layer Apr. 8, 2014
8685783 Phase change memory cell Apr. 1, 2014
8686395 Bond type flip-chip light-emitting structure and method of manufacturing the same Apr. 1, 2014
8686397 Low droop light emitting diode structure on gallium nitride semipolar substrates Apr. 1, 2014
8680508 Semiconductor light emitting device and method for manufacturing same Mar. 25, 2014
8680514 Electric energy generator Mar. 25, 2014
8680509 Nitride semiconductor device and method of producing the same Mar. 25, 2014
8679880 Thin film forming method and quantum dot device Mar. 25, 2014
8674338 Semiconductor light emitting device Mar. 18, 2014
8674375 Roughened high refractive index layer/LED for high light extraction Mar. 18, 2014
8669545 Light emitting device having sub barrier layers with varying energy bands, light emitting device package and lighting system including the light emitting device package Mar. 11, 2014
8669546 Nitride group semiconductor light emitting device including multiquantum well structure Mar. 11, 2014
8664636 Nanostructured device Mar. 4, 2014
8664637 Quantum dot phosphor for light emitting diode and method of preparing the same Mar. 4, 2014
8664681 Parallel plate slot emission array Mar. 4, 2014
8659005 Staggered composition quantum well method and device Feb. 25, 2014
8658440 Nitride semiconductor crystal with surface texture Feb. 25, 2014
8653498 Semiconductor light emitting device Feb. 18, 2014
8653499 Light-emitting diode with strain-relaxed layer for reducing strain in active layer Feb. 18, 2014
8653501 Emitting device and manufacturing method therefor Feb. 18, 2014
8653549 Phosphor, phosphor manufacturing method, and white light emitting device Feb. 18, 2014
8648328 Light emitting diode (LED) using three-dimensional gallium nitride (GaN) pillar structures with planar surfaces Feb. 11, 2014
8642943 Semiconductor wafer, light-receiving element, light-receiving element array, hybrid-type detection device, optical sensor device, and process for production of semiconductor wafer Feb. 4, 2014
8642992 Group III nitride compound semiconductor light emitting device Feb. 4, 2014
8642993 Nonpolar III-nitride light emitting diodes with long wavelength emission Feb. 4, 2014
8633092 Quantum well device Jan. 21, 2014
8629424 Light emitting diode with three-dimensional nano-structures Jan. 14, 2014
8629425 Tunable wavelength light emitting diode Jan. 14, 2014
8629559 Stress reduction apparatus with an inverted cup-shaped layer Jan. 14, 2014
8624221 Light emitting device having a well structure different of a multi-quantum well structures Jan. 7, 2014
8610105 Semiconductor electroluminescent device with a multiple-quantum well layer formed therein Dec. 17, 2013
8610107 Light emitting device having a well structure different of a multi-quantum well structures Dec. 17, 2013
8592800 Optical devices featuring nonpolar textured semiconductor layers Nov. 26, 2013
8592802 (Al, In, Ga, B)N device structures on a patterned substrate Nov. 26, 2013
8581231 Light emitting device with electrode having plurality of adhesive seeds spaced from one another on the light emitting structure Nov. 12, 2013
8569735 Semiconductor light-emitting element, electrode and manufacturing method for the element, and lamp Oct. 29, 2013
8569736 Light emitting diode Oct. 29, 2013
8563964 Light emitting semiconductor device Oct. 22, 2013
8551868 Irradiation assisted nucleation of quantum confinements by atomic layer deposition Oct. 8, 2013
8541252 Abbreviated epitaxial growth mode (AGM) method for reducing cost and improving quality of LEDs and lasers Sep. 24, 2013
8541791 Source of photons resulting from a recombination of localized excitons Sep. 24, 2013
8541794 Nitride semiconductor light-emitting devices Sep. 24, 2013
8530883 Manufacture of quantum dot-enabled solid-state light emitters Sep. 10, 2013
8530257 Band offset in alingap based light emitters to improve temperature performance Sep. 10, 2013
8519430 Optoelectronic device and method for manufacturing the same Aug. 27, 2013
8513643 Mixed alloy defect redirection region and devices including same Aug. 20, 2013
8513644 Strain-controlled atomic layer epitaxy, quantum wells and superlattices prepared thereby and uses thereof Aug. 20, 2013
8513036 Photonic quantum ring laser and fabrication method thereof Aug. 20, 2013

1 2 3 4 5 6 7 8 9 10 11

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