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Class Information
Number: 438/745
Name: Semiconductor device manufacturing: process > Chemical etching > Liquid phase etching
Description: Processes wherein the chemical etchant is in a liquid state when brought into contact with the semiconductive substrate.


Sub-classes under this class:

Class Number Class Name Patents
438/754 Electrically conductive material (e.g., metal, conductive oxide, etc.) 390
438/752 Germanium 100
438/748 Projection of etchant against a moving substrate or controlling the angle or pattern of projected etchant 129
438/749 Sequential application of etchant 150
438/757 Silicon nitride 218
438/756 Silicon oxide 422
438/753 Silicon 427
438/746 Utilizing electromagnetic or wave energy 85
438/747 With relative movement between substrate and confined pool of etchant 143


Patents under this class:
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Patent Number Title Of Patent Date Issued
6429144 Integrated circuit manufacture method with aqueous hydrogen fluoride and nitric acid oxide etch Aug. 6, 2002
6429145 Method of determining electrical properties of silicon-on-insulator wafers Aug. 6, 2002
6426295 Reduction of surface roughness during chemical mechanical planarization(CMP) Jul. 30, 2002
6426296 Method and apparatus for obtaining a precision thickness in semiconductor and other wafers Jul. 30, 2002
6423641 Method of making self-aligned bit-lines Jul. 23, 2002
6420275 System and method for analyzing a semiconductor surface Jul. 16, 2002
6413355 Apparatus for and method of cleaning objects to be processed Jul. 2, 2002
6413872 Method op optimizing vias between conductive layers in an integrated circuit structure Jul. 2, 2002
6413873 System for chemical mechanical planarization Jul. 2, 2002
6413878 Method of manufacturing electronic components Jul. 2, 2002
6413923 Non-corrosive cleaning composition for removing plasma etching residues Jul. 2, 2002
6410416 Article comprising a high-resolution pattern on a non-planar surface and method of making the same Jun. 25, 2002
6410436 Method of cleaning porous body, and process for producing porous body, non-porous film or bonded substrate Jun. 25, 2002
6410442 Mask-less differential etching and planarization of copper films Jun. 25, 2002
6410494 Cleaning agent Jun. 25, 2002
6406998 Formation of silicided contact by ion implantation Jun. 18, 2002
6407005 Method for forming semiconductor device to prevent electric field concentration from being generated at corner of active region Jun. 18, 2002
6403385 Method of inspecting a semiconductor wafer for defects Jun. 11, 2002
6403484 Method to achieve STI planarization Jun. 11, 2002
6403496 Method for forming shallow trench isolations Jun. 11, 2002
6399499 Method for fabricating an electrode of a plasma chamber Jun. 4, 2002
6399502 Process for fabricating a planar heterostructure Jun. 4, 2002
6399517 Etching method and etching apparatus Jun. 4, 2002
6395572 Method of producing semiconductor light-emitting element May. 28, 2002
6395626 Method of forming bonding projecting electrodes May. 28, 2002
6395638 Method for producing a micromembrane pump body May. 28, 2002
6395640 Apparatus and method for selectivity restricting process fluid flow in semiconductor processing May. 28, 2002
6395645 Anisotropic wet etching May. 28, 2002
6395646 Machine for etching the edge of a wafer and method of etching the edge of a wafer May. 28, 2002
6391782 Process for forming multiple active lines and gate-all-around MOSFET May. 21, 2002
6391793 Compositions for etching silicon with high selectivity to oxides and methods of using same May. 21, 2002
6391794 Composition and method for cleaning residual debris from semiconductor surfaces May. 21, 2002
6387813 Method for stripping a low dielectric film with high carbon content May. 14, 2002
6387821 Method of manufacturing a semiconductor device May. 14, 2002
6387822 Application of an ozonated DI water spray to resist residue removal processes May. 14, 2002
6383410 Selective silicon oxide etchant formulation including fluoride salt, chelating agent, and glycol solvent May. 7, 2002
6383931 Convertible hot edge ring to improve low-K dielectric etch May. 7, 2002
6383933 Method of using organic material to enhance STI planarization or other planarization processes May. 7, 2002
6383934 Method and apparatus for chemical-mechanical planarization of microelectronic substrates with selected planarizing liquids May. 7, 2002
6379980 Method and apparatus for monitoring material removal tool performance using endpoint time removal rate determination Apr. 30, 2002
6379990 Method of fabricating a micromechanical semiconductor configuration Apr. 30, 2002
6380089 Method of manufacturing semiconductor device Apr. 30, 2002
6380097 Method for obtaining a sulfur-passivated semiconductor surface Apr. 30, 2002
6380098 Composition for a wiring, a wiring using the composition, manufacturing method thereof, a display using the wiring and a manufacturing method thereof Apr. 30, 2002
6375792 Methods and apparatuses for removing material from discrete areas on a semiconductor wafer Apr. 23, 2002
6376353 Aluminum and copper bimetallic bond pad scheme for copper damascene interconnects Apr. 23, 2002
6376372 Approaches for mitigating the narrow poly-line effect in silicide formation Apr. 23, 2002
6376380 Method of forming memory circuitry and method of forming memory circuitry comprising a buried bit line array of memory cells Apr. 23, 2002
6376390 Methods and apparatuses for removing material from discrete areas on a semiconductor wafer Apr. 23, 2002
6372081 Process to prevent copper contamination of semiconductor fabs Apr. 16, 2002

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