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Class Information
Number: 257/E21.459
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) > 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)
Description: This subclass is indented under subclass E21.04 This subclass is substantially the same in scope as ECLA classification H01L21/34.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.47 Alloying of impurity material, e.g., dopant, electrode material, with semiconductor body (epo) 21
257/E21.461 Deposition of semiconductor material on substrate, e.g., epitaxial growth (epo) 185
257/E21.466 Diffusion of impurity material, e.g., dopant, electrode material, into or out of semiconductor body, or between semiconductor regions (epo) 42
257/E21.476 Manufacture of electrodes on semiconductor bodies using processes or apparatus other than epitaxial growth, e.g., coating, diffusion, or alloying, or radiation treatment (epo) 208
257/E21.46 Multistep process (epo) 54
257/E21.471 Radiation treatment (epo) 23
257/E21.482 Treatment of semiconductor body using process other than electromagnetic radiation (epo) 29


Patents under this class:
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Patent Number Title Of Patent Date Issued
8691612 Method of creating micro-scale silver telluride grains covered with bismuth nanoparticles Apr. 8, 2014
8685787 Manufacturing method of semiconductor device Apr. 1, 2014
8658463 Memristor with embedded switching layer Feb. 25, 2014
8623698 Method for manufacturing semiconductor device Jan. 7, 2014
8617915 Annealing thin films Dec. 31, 2013
8597976 Multilevel-cell memory structures employing multi-memory layers with tungsten oxides and manufacturing method Dec. 3, 2013
8552434 Semiconductor device and method for manufacturing the same Oct. 8, 2013
8546182 Semiconductor device and method for manufacturing the same Oct. 1, 2013
8546797 Zinc oxide based compound semiconductor device Oct. 1, 2013
8513054 Method for manufacturing semiconductor device Aug. 20, 2013
8513743 Field effect transistor with channel region having portions with different band structures for suppressed corner leakage Aug. 20, 2013
8481362 Thin film transistor and method for preparing the same Jul. 9, 2013
8481363 Semiconductor device and manufacturing method thereof Jul. 9, 2013
8471252 Semiconductor device and method for manufacturing the same Jun. 25, 2013
8450145 Nonvolatile semiconductor memory device and method for producing the same May. 28, 2013
8450835 Reverse leakage reduction and vertical height shrinking of diode with halo doping May. 28, 2013
8394671 Method for manufacturing semiconductor device Mar. 12, 2013
8389326 Method for manufacturing semiconductor device Mar. 5, 2013
8377718 Methods of forming a crystalline Pr.sub.1-xCa.sub.xMnO.sub.3 (PCMO) material and methods of forming semiconductor device structures comprising crystalline PCMO Feb. 19, 2013
8344387 Semiconductor device and method for manufacturing the same Jan. 1, 2013
8227359 Method for manufacturing group III nitride semiconductor layer, method for manufacturing group III nitride semiconductor light-emitting device, and group III nitride semiconductor light-emitti Jul. 24, 2012
8216878 Method for manufacturing semiconductor device Jul. 10, 2012
8216922 Plasma doping method Jul. 10, 2012
8212247 Organic light emitting display device and fabricating method thereof Jul. 3, 2012
8207014 Method for manufacturing semiconductor device Jun. 26, 2012
8143115 Method for manufacturing thin film transistor using oxide semiconductor and display apparatus Mar. 27, 2012
8125037 Field effect transistor with channel region edge and center portions having different band structures for suppressed corner leakage Feb. 28, 2012
8110436 Method for manufacturing field-effect transistor Feb. 7, 2012
8106400 Semiconductor device and method for manufacturing the same Jan. 31, 2012
8080484 Method for manufacturing group III nitride semiconductor layer, method for manufacturing group III nitride semiconductor light-emitting device, and group III nitride semiconductor light-emitti Dec. 20, 2011
8071977 Thin film transistor array panel and manufacturing method thereof Dec. 6, 2011
8063480 Printed board and semiconductor integrated circuit Nov. 22, 2011
8058641 Copper blend I-VII compound semiconductor light-emitting devices Nov. 15, 2011
8030663 Semiconductor device and manufacturing method thereof Oct. 4, 2011
7998828 Method of forming metal ion transistor Aug. 16, 2011
7998372 Semiconductor thin film, method for manufacturing the same, thin film transistor, and active-matrix-driven display panel Aug. 16, 2011
7994508 Thin film transistors using thin film semiconductor materials Aug. 9, 2011
7947537 Metal oxide semiconductor, semiconductor element, thin film transistor and method of manufacturing thereof May. 24, 2011
7919774 Nonvolatile memory element, nonvolatile memory apparatus, and method of manufacture thereof Apr. 5, 2011
7915157 Chip structure and process for forming the same Mar. 29, 2011
7867880 Metal precursors for low temperature deposition and methods of forming a metal thin layer and manufacturing a phase-change memory device using the metal precursors Jan. 11, 2011
7842539 Zinc oxide semiconductor and method of manufacturing the same Nov. 30, 2010
7811943 Process for producing silicon carbide crystals having increased minority carrier lifetimes Oct. 12, 2010
7804088 Semiconductor device, manufacturing method of semiconductor device, display device, and manufacturing method of display device Sep. 28, 2010
7745282 Interconnect structure with bi-layer metal cap Jun. 29, 2010
7709295 Method of manufacturing semiconductor device May. 4, 2010
7682939 Method for the preparation of group IB-IIIA-VIA quaternary or higher alloy semiconductor films Mar. 23, 2010
7611951 Method of fabricating MOS transistor having epitaxial region Nov. 3, 2009
7468315 System and process for producing nanowire composites and electronic substrates therefrom Dec. 23, 2008
7427569 Metal etching process and rework method thereof Sep. 23, 2008

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