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Class Information
Number: 257/E21.483
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) > Treatment of semiconductor body using process other than electromagnetic radiation (epo) > To change their surface-physical characteristics or shape, e.g., etching, polishing, cutting (epo)
Description: This subclass is indented under subclass E21.482. This subclass is substantially the same in scope as ECLA classification H01L21/461.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.485 Chemical or electrical treatment, e.g., electrolytic etching (epo) 107
257/E21.495 Deposition of noninsulating, e.g., conductive -, resistive -, layer on insulating layer (epo) 132
257/E21.484 Mechanical treatment, e.g., grinding, ultrasonic treatment (epo) 14
257/E21.487 To form insulating layer thereon, e.g., for masking or by using photolithographic techniques; post treatment of these layers (epo) 51


Patents under this class:
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Patent Number Title Of Patent Date Issued
8709915 Method of manufacturing semiconductor device Apr. 29, 2014
8703551 Process flow to reduce hole defects in P-active regions and to reduce across-wafer threshold voltage scatter Apr. 22, 2014
8669190 Method for manufacturing semiconductor device and semiconductor wafer Mar. 11, 2014
8664089 Semiconductor die singulation method Mar. 4, 2014
8592316 Nitride semiconductor substrate, production method therefor and nitride semiconductor device Nov. 26, 2013
8580597 Making of a microelectronic device including a monocrystalline silicon NEMS component and a transistor the gate of which is made in the same layer as the mobile structure of this component Nov. 12, 2013
8569180 Method and structure of wafer level encapsulation of integrated circuits with cavity Oct. 29, 2013
8536025 Resized wafer with a negative photoresist ring and design structures thereof Sep. 17, 2013
8501521 Copper species surface treatment of thin film photovoltaic cell and manufacturing method Aug. 6, 2013
8486761 Hybrid combination of substrate and carrier mounted light emitting devices Jul. 16, 2013
8486835 Czochralski growth of randomly oriented polysilicon and use of randomly oriented polysilicon dummy wafers Jul. 16, 2013
8487296 Graphene deposition and graphenated substrates Jul. 16, 2013
8476104 Sodium species surface treatment of thin film photovoltaic cell and manufacturing method Jul. 2, 2013
8435826 Bulk sulfide species treatment of thin film photovoltaic cell and manufacturing method May. 7, 2013
8415235 Adhesive, adhesive sheet, and process for producing electronic components Apr. 9, 2013
8394662 Chloride species surface treatment of thin film photovoltaic cell and manufacturing method Mar. 12, 2013
8390129 Semiconductor device with a plurality of mark through substrate vias Mar. 5, 2013
8389412 Finishing method for a silicon on insulator substrate Mar. 5, 2013
8324081 Wafer level surface passivation of stackable integrated circuit chips Dec. 4, 2012
8273654 Producing a vertical transistor including reentrant profile Sep. 25, 2012
8273666 Process to fabricate bottom electrode for MRAM device Sep. 25, 2012
8236611 Die singulation method and package formed thereby Aug. 7, 2012
8222155 Selectivity control in a plasma processing system Jul. 17, 2012
8187907 Solder structures for fabrication of inverted metamorphic multijunction solar cells May. 29, 2012
8178439 Surface cleaning and selective deposition of metal-containing cap layers for semiconductor devices May. 15, 2012
8178425 Optical device wafer processing method May. 15, 2012
8153511 Method for manufacturing semiconductor device Apr. 10, 2012
8129287 Method for manufacturing semiconductor device and semiconductor device Mar. 6, 2012
8093157 Advanced processing technique and system for preserving tungsten in a device structure Jan. 10, 2012
8080477 Film formation apparatus and method for using same Dec. 20, 2011
8048776 Semiconductor device and method of supporting a wafer during backgrinding and reflow of solder bumps Nov. 1, 2011
7998837 Method for fabricating semiconductor device using spacer patterning technique Aug. 16, 2011
7999362 Method and apparatus for making semiconductor devices including a foil Aug. 16, 2011
7923349 Wafer level surface passivation of stackable integrated circuit chips Apr. 12, 2011
7914623 Post-ion implant cleaning for silicon on insulator substrate preparation Mar. 29, 2011
7906388 Semiconductor device and method for manufacture Mar. 15, 2011
7875479 Integration structure of semiconductor circuit and microprobe sensing elements and method for fabricating the same Jan. 25, 2011
7867789 Contact clean by remote plasma and repair of silicide surface Jan. 11, 2011
7838436 Bottom electrode for MRAM device and method to fabricate it Nov. 23, 2010
7790490 Surface micromechanical process for manufacturing micromachined capacitive ultra-acoustic transducers and relevant micromachined capacitive ultra-acoustic transducer Sep. 7, 2010
7718536 Planarization process for pre-damascene structure including metal hard mask May. 18, 2010
7713844 Nitride semiconductor substrate, and method for working nitride semiconductor substrate May. 11, 2010
7670946 Methods to eliminate contact plug sidewall slit Mar. 2, 2010
7645703 Method and structure for aluminum chemical mechanical polishing Jan. 12, 2010
7611989 Polysilicon dummy wafers and process used therewith Nov. 3, 2009
7592265 Method of trimming a hard mask layer, method for fabricating a gate in a MOS transistor, and a stack for fabricating a gate in a MOS transistor Sep. 22, 2009
7585782 Methods of forming semiconductor constructions, and methods of selectively removing metal-containing materials relative to oxide Sep. 8, 2009
7585784 System and method for reducing etch sequencing induced downstream dielectric defects in high volume semiconducting manufacturing Sep. 8, 2009
7553777 Silicon wafer laser processing method and laser beam processing machine Jun. 30, 2009
7550381 Contact clean by remote plasma and repair of silicide surface Jun. 23, 2009

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