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Class Information
Number: 257/E21.04
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Processes or apparatus adapted for manufacture or treatment of semiconductor or solid-state devices or of parts thereof (epo) > Manufacture or treatment of semiconductor device (epo) > Device having at least one potential-jump barrier or surface barrier, e.g., pn junction, depletion layer, carrier concentration layer (epo)
Description: This subclass is indented under subclass E21.002. This subclass is substantially the same in scope as ECLA classification H01L21/04.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.041 Device having semiconductor body comprising carbon, e.g., diamond, diamond-like carbon (epo) 60
257/E21.054 Device having semiconductor body comprising silicon carbide (sic) (epo) 200
257/E21.068 Device having semiconductor body comprising selenium (se) or tellurium (te) (epo) 113
257/E21.078 Device having semiconductor body comprising cuprous oxide (cu 2 o) or cuprous iodide (cui) (epo) 21
257/E21.085 Device having semiconductor body comprising group iv elements or group iii-v compounds with or without impurities, e.g., doping materials (epo) 114
257/E21.459 Device having semiconductor body other than carbon, si, ge, sic, se, te, cu 2 o, cui, and group iii-v compounds with or without impurities, e.g., doping materials (epo) 55
257/E21.499 Assembling semiconductor devices, e.g., packaging , including mounting, encapsulating, or treatment of packaged semiconductor (epo) 1,471


Patents under this class:
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Patent Number Title Of Patent Date Issued
8704210 Boundary-modulated nanoparticle junctions and a method for manufacture thereof Apr. 22, 2014
8685806 Silicon-on-insulator substrate with built-in substrate junction Apr. 1, 2014
8674332 RRAM device with an embedded selector structure and methods of making same Mar. 18, 2014
8637385 High voltage durability transistor and method for fabricating same Jan. 28, 2014
8633561 Termination for a superjunction device Jan. 21, 2014
8629519 Tunneling magnetoresistance sensor Jan. 14, 2014
8624397 Electrode layer structure for a thin-film transistor and process for manufacture thereof Jan. 7, 2014
8617960 Silicon microphone transducer Dec. 31, 2013
8614104 Method for manufacturing semiconductor device Dec. 24, 2013
8574968 Epitaxial methods and templates grown by the methods Nov. 5, 2013
8575605 Organic light-emitting display device and method of manufacturing the same Nov. 5, 2013
8530290 Thin film transistor, method of fabricating the same, and organic light emitting diode display device including the same Sep. 10, 2013
8497191 Selective epitaxial growth method using halogen containing gate sidewall mask Jul. 30, 2013
8497537 Semiconductor device with ferro-electric capacitor Jul. 30, 2013
8450822 Thick bond pad for chip with cavity package May. 28, 2013
8389321 Protective layer for large-scale production of thin-film solar cells Mar. 5, 2013
8389976 Methods of forming carbon nanotube transistors for high speed circuit operation and structures formed thereby Mar. 5, 2013
8378435 Pressure sensor and method of assembling same Feb. 19, 2013
8362479 Semiconductor material Jan. 29, 2013
8349716 Semiconductor device with reduced junction leakage and an associated method of forming such a semiconductor device Jan. 8, 2013
8350252 Boundary-modulated nanoparticle junctions and a method for manufacture thereof Jan. 8, 2013
8330148 Electric organic component and method for the production thereof Dec. 11, 2012
8298924 Method for differential spacer removal by wet chemical etch process and device with differential spacer structure Oct. 30, 2012
8288875 Method of manufacturing a semiconductor package and semiconductor package having an electrode pad with a small pitch Oct. 16, 2012
8264864 Memory device with band gap control Sep. 11, 2012
8241943 Sodium doping method and system for shaped CIGS/CIS based thin film solar cells Aug. 14, 2012
8236685 Phase change memory device having multiple metal silicide layers and method of manufacturing the same Aug. 7, 2012
8227880 Semiconductor device and manufacturing method thereof Jul. 24, 2012
8129814 Schottky diode with silicide anode and anode-encircling P-type doped region Mar. 6, 2012
8119439 Methods of manufacturing an image sensor having an air gap Feb. 21, 2012
8110877 Metal-insulator-semiconductor tunneling contacts having an insulative layer disposed between source/drain contacts and source/drain regions Feb. 7, 2012
8080433 Method for detaching layers with low magnetic permeability Dec. 20, 2011
8080441 Growing polygonal carbon from photoresist Dec. 20, 2011
8080825 Image sensor and method for manufacturing the same Dec. 20, 2011
8039352 Polarization-induced barriers for N-face nitride-based electronics Oct. 18, 2011
8035159 Device structure and manufacturing method using HDP deposited source-body implant block Oct. 11, 2011
8030114 Method and structure to reduce dark current in image sensors Oct. 4, 2011
8022502 Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor apparatus using the nonvolatile memory element Sep. 20, 2011
7994011 Method of manufacturing nonvolatile memory device and nonvolatile memory device manufactured by the method Aug. 9, 2011
7989225 Method for detaching layers with low magnetic permeability Aug. 2, 2011
7964932 Semiconductor device with depletion region Jun. 21, 2011
7955875 Forming light emitting devices including custom wavelength conversion structures Jun. 7, 2011
7943472 CoSi2 Schottky diode integration in BiSMOS process May. 17, 2011
7927909 Germanium film optical device fabricated on a glass substrate Apr. 19, 2011
7927978 Method of making devices including graphene layers epitaxially grown on single crystal substrates Apr. 19, 2011
7928479 Semiconductor device and method for manufacturing the same Apr. 19, 2011
7893466 Semiconductor FET sensor and method of fabricating the same Feb. 22, 2011
7888162 Method of manufacturing a photoelectronic device Feb. 15, 2011
7888158 System and method for making a photovoltaic unit Feb. 15, 2011
7871849 Method for manufacturing photoelectric conversion device Jan. 18, 2011

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