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Class Information
Number: 257/E21.244
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) > To form insulating layer thereon, e.g., for masking or by using photolithographic technique (epo) > Post-treatment (epo) > Planarization of insulating layer (epo) > Involving dielectric removal step (epo)
Description: This subclass is indented under subclass E21.243. This subclass is substantially the same in scope as ECLA classification H01L21/3105B2.


Sub-classes under this class:

Class Number Class Name Patents
257/E21.245 Removal by chemical etching, e.g., dry etching (epo) 249


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Patent Number Title Of Patent Date Issued
7601607 Protruded contact and insertion of inter-layer-dielectric material to match damascene hardmask to improve undercut for low-k interconnects Oct. 13, 2009
7575995 Method of forming fine metal pattern and method of forming metal line using the same Aug. 18, 2009
7572697 Method of manufacturing flash memory device Aug. 11, 2009
7564114 Semiconductor devices and methods of manufacture thereof Jul. 21, 2009
7560329 Semiconductor device and method for fabricating the same Jul. 14, 2009
7544618 Two-step chemical mechanical polishing process Jun. 9, 2009
7537971 Method for fabricating CMOS image sensor May. 26, 2009
7528059 Method for reducing polish-induced damage in a contact structure by forming a capping layer May. 5, 2009
7510972 Method of processing substrate, post-chemical mechanical polishing cleaning method, and method of and program for manufacturing electronic device Mar. 31, 2009
7459720 Single crystal wafer and solar battery cell Dec. 2, 2008
7419909 Methods of forming a semiconductor device that allow patterns in different regions that have different pitches to be connected Sep. 2, 2008
7396737 Method of forming shallow trench isolation Jul. 8, 2008
7393737 Semiconductor device and a method of manufacturing the same Jul. 1, 2008
7393789 Protective coating for planarization Jul. 1, 2008
7361598 Method for fabricating semiconductor device capable of preventing scratch Apr. 22, 2008
7358587 Semiconductor structures Apr. 15, 2008
7358196 Wet chemical treatment to form a thin oxide for high k gate dielectrics Apr. 15, 2008
7338905 Semiconductor device manufacture method Mar. 4, 2008
7282434 Method of manufacturing a semiconductor device Oct. 16, 2007
7276426 Methods of forming semiconductor constructions Oct. 2, 2007
7271100 Slurry composition, polishing method using the slurry composition and method of forming a gate pattern using the slurry composition Sep. 18, 2007
7148103 Multilevel poly-Si tiling for semiconductor circuit manufacture Dec. 12, 2006
7074625 Semiconductor device and method of manufacturing the same Jul. 11, 2006
7071074 Structure and method for placement, sizing and shaping of dummy structures Jul. 4, 2006
7071105 Method of polishing a silicon-containing dielectric Jul. 4, 2006
7071106 Method for CMP removal rate compensation Jul. 4, 2006
7066790 Chemical-mechanical polishing methods Jun. 27, 2006
7064053 Process for fabricating an electrical circuit comprising a polishing step Jun. 20, 2006
7061068 Shallow trench isolation structures having uniform and smooth topography Jun. 13, 2006
7052997 Method to form etch and/or CMP stop layers May. 30, 2006
7052625 Slurry and use thereof for polishing May. 30, 2006
7048612 Method of chemical mechanical polishing May. 23, 2006
7045073 Pre-etch implantation damage for the removal of thin film layers May. 16, 2006
7045435 Shallow trench isolation method for a semiconductor wafer May. 16, 2006
7040956 Control of chemical mechanical polishing pad conditioner directional velocity to improve pad life May. 9, 2006
7040966 Carbonation of pH controlled KOH solution for improved polishing of oxide films on semiconductor wafers May. 9, 2006
7041600 Methods of planarization May. 9, 2006
7037821 Method for forming contact of semiconductor device May. 2, 2006
7037179 Methods and apparatuses for making and using planarizing pads for mechanical and chemical-mechanical planarization of microelectronic substrates May. 2, 2006
7037840 Methods of forming planarized surfaces over semiconductor substrates May. 2, 2006
7033943 Etching solution, etching method and method for manufacturing semiconductor device Apr. 25, 2006
7033941 Method of producing semiconductor devices using chemical mechanical polishing Apr. 25, 2006
7034367 Semiconductor device having an STI structure and a dummy pattern with a rectangular shape Apr. 25, 2006
7029509 CMP slurry composition and a method for planarizing semiconductor device using the same Apr. 18, 2006
7029596 Computer integrated manufacturing control system for oxide chemical mechanical polishing Apr. 18, 2006
7030017 Method for the planarization of a semiconductor structure Apr. 18, 2006
7026245 Polishing agent and polishing method Apr. 11, 2006
7018560 Composition for polishing semiconductor layers Mar. 28, 2006
7018924 CMP slurry compositions for oxide films and methods for forming metal line contact plugs using the same Mar. 28, 2006
7017133 Designing a semiconductor device layout using polishing regions Mar. 21, 2006

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