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Class Information
Number: 257/E21.294
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 comprising group iv elements or group iii-v compounds with or without impurities, e.g., doping materials (epo) > Treatment of semiconductor body using process other than deposition of semiconductor material on a substrate, diffusion or alloying of impurity material, or radiation treatment (epo) > To change their surface-physical characteristics or shape, e.g., etching, polishing, cutting (epo) > Deposition/post-treatment of noninsulating, e.g., conductive - or resistive - layers on insulating layers (epo)
Description: This subclass is indented under subclass E21.214. This subclass is substantially the same in scope as ECLA classification H01L21/3205.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.299 Deposition of conductive or semi-conductive organic layer (epo) 49
257/E21.295 Deposition of layer comprising metal, e.g., metal, alloys, metal compounds (epo) 461
257/E21.297 Deposition of semiconductive layer, e.g., poly - or amorphous silicon layer (epo) 123
257/E21.298 Deposition of superconductive layer (epo) 8
257/E21.3 Post treatment (epo) 299


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8664062 Method of manufacturing flash memory cell Mar. 4, 2014
8659077 Multi-layer work function metal replacement gate Feb. 25, 2014
8647972 Multi-layer work function metal replacement gate Feb. 11, 2014
8642459 Method for forming a semiconductor device with an isolation region on a gate electrode Feb. 4, 2014
8642471 Semiconductor structure and method for manufacturing the same Feb. 4, 2014
8633569 AlN inter-layers in III-N material grown on REO/silicon substrate Jan. 21, 2014
8592312 Method for depositing a conductive capping layer on metal lines Nov. 26, 2013
8558299 Semiconductor device with gate electrode stack including low resistivity tungsten and method of forming Oct. 15, 2013
8519489 Method and apparatus for tunable electrical conductivity Aug. 27, 2013
8507355 Manufacturing method of a high performance metal-oxide-metal Aug. 13, 2013
8470681 Resistor with improved switchable resistance and non-volatile memory device Jun. 25, 2013
8471367 Semiconductor device and method for manufacturing semiconductor device Jun. 25, 2013
8450191 Polysilicon films by HDP-CVD May. 28, 2013
8436405 ROM cell circuit for FinFET devices May. 7, 2013
8367508 Self-aligned contacts for field effect transistor devices Feb. 5, 2013
8354727 Semiconductor device and process for producing the same Jan. 15, 2013
8354719 Finned semiconductor device with oxygen diffusion barrier regions, and related fabrication methods Jan. 15, 2013
8354342 Semiconductor device with side-junction and method for fabricating the same Jan. 15, 2013
8298927 Method of adjusting metal gate work function of NMOS device Oct. 30, 2012
8294202 Metal gate structure of a semiconductor device Oct. 23, 2012
8288182 Method for manufacturing thin film transistor and display device Oct. 16, 2012
8277670 Plasma process with photoresist mask pretreatment Oct. 2, 2012
8242033 High throughput recrystallization of semiconducting materials Aug. 14, 2012
8242008 Methods of removing noble metal-containing nanoparticles, methods of forming NAND string gates, and methods of forming integrated circuitry Aug. 14, 2012
8237204 Method for passivating a field-effect transistor Aug. 7, 2012
8227916 Package structure and method for reducing dielectric layer delamination Jul. 24, 2012
8212295 ROM cell circuit for FinFET devices Jul. 3, 2012
8211786 CMOS structure including non-planar hybrid orientation substrate with planar gate electrodes and method for fabrication Jul. 3, 2012
8183138 Methods for forming nanodots and/or a patterned material during the formation of a semiconductor device May. 22, 2012
8163614 Method for forming NAND typed memory device Apr. 24, 2012
8163640 Metal gate compatible electrical fuse Apr. 24, 2012
8158519 Method of manufacturing non-volatile memory cell using self-aligned metal silicide Apr. 17, 2012
8084305 Isolation spacer for thin SOI devices Dec. 27, 2011
8080477 Film formation apparatus and method for using same Dec. 20, 2011
8080472 Metal line having a Mo.sub.xSi.sub.y/Mo diffusion barrier of semiconductor device and method for forming the same Dec. 20, 2011
8067292 Isolation structure, non-volatile memory having the same, and method of fabricating the same Nov. 29, 2011
8067311 Mask and method for fabricating semiconductor device using the same Nov. 29, 2011
8063453 Gate in semiconductor device and method of fabricating the same Nov. 22, 2011
8058132 Method of fabricating flash memory device Nov. 15, 2011
8043952 Method of forming aluminum oxide layer and method of manufacturing charge trap memory device using the same Oct. 25, 2011
8012782 Method for producing display device Sep. 6, 2011
8003431 Method for antireflection treatment of a zinc oxide film and method for manufacturing solar cell using the same Aug. 23, 2011
7981781 Metal line of semiconductor device having a diffusion barrier and method for forming the same Jul. 19, 2011
7977133 Method of fabricating vertical structure compound semiconductor devices Jul. 12, 2011
7968955 Gate in semiconductor device and method of fabricating the same Jun. 28, 2011
7923628 Method of controlling the composition of a photovoltaic thin film Apr. 12, 2011
7898020 Semiconductor memory, semiconductor memory system using the same, and method for producing quantum dots applied to semiconductor memory Mar. 1, 2011
7892986 Ashing method and apparatus therefor Feb. 22, 2011
7883929 Methods of manufacturing non-volatile memory devices by implanting metal ions into grain boundaries of variable resistance layers Feb. 8, 2011
7883960 Method of manufacturing semiconductor device Feb. 8, 2011

1 2 3










 
 
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