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Class Information
Number: 438/750
Name: Semiconductor device manufacturing: process > Chemical etching > Liquid phase etching > Sequential application of etchant > To same side of substrate
Description: Processes wherein the sequential liquid phase etching steps are carried out on the same major surface of the semiconductor substrate.


Sub-classes under this class:

Class Number Class Name Patents
438/751 Each etch step exposes surface of an adjacent layer 143


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
6602795 System and method for analyzing a semiconductor surface Aug. 5, 2003
6596640 Method of forming a raised contact for a substrate Jul. 22, 2003
6589882 Copper post-etch cleaning process Jul. 8, 2003
6586145 Method of fabricating semiconductor device and semiconductor device Jul. 1, 2003
6579810 Method of removing a photoresist layer on a semiconductor wafer Jun. 17, 2003
6576547 Residue-free contact openings and methods for fabricating same Jun. 10, 2003
6566258 Bi-layer etch stop for inter-level via May. 20, 2003
6566274 Lithography process for transparent substrates May. 20, 2003
6562726 Acid blend for removing etch residue May. 13, 2003
6554002 Method for removing etching residues Apr. 29, 2003
6551945 Process for manufacturing a semiconductor device Apr. 22, 2003
6530380 Method for selective oxide etching in pre-metal deposition Mar. 11, 2003
6528425 Method and apparatus for processing substrate surface with striped ridge patterns Mar. 4, 2003
6518197 Method for manufacturing semiconductor device Feb. 11, 2003
6489251 Method of forming a slope lateral structure Dec. 3, 2002
6489250 Method for cutting group III nitride semiconductor light emitting element Dec. 3, 2002
6486074 Methods of masking and etching a semiconductor substrate, and ion implant lithography methods of processing a semiconductor substrate Nov. 26, 2002
6465358 Post etch clean sequence for making a semiconductor device Oct. 15, 2002
6458494 Etching method Oct. 1, 2002
6455428 Method of forming a metal silicide layer Sep. 24, 2002
6453915 Post polycide gate etching cleaning method Sep. 24, 2002
6446641 Method of manufacturing semiconductor device, and semiconductor device manufactured thereby Sep. 10, 2002
6432826 Planarized Cu cleaning for reduced defects Aug. 13, 2002
6429144 Integrated circuit manufacture method with aqueous hydrogen fluoride and nitric acid oxide etch Aug. 6, 2002
6429134 Method of manufacturing semiconductor device Aug. 6, 2002
6428718 Selective back side wet etch Aug. 6, 2002
6420275 System and method for analyzing a semiconductor surface Jul. 16, 2002
6403496 Method for forming shallow trench isolations Jun. 11, 2002
6403439 Method of preparing for structural analysis a deep trench-type capacitor and method of structural analysis therefor Jun. 11, 2002
6399517 Etching method and etching apparatus Jun. 4, 2002
6395651 Simplified process for producing nanoporous silica May. 28, 2002
6391793 Compositions for etching silicon with high selectivity to oxides and methods of using same May. 21, 2002
6387289 Planarizing machines and methods for mechanical and/or chemical-mechanical planarization of microelectronic-device substrate assemblies May. 14, 2002
6380097 Method for obtaining a sulfur-passivated semiconductor surface Apr. 30, 2002
6350696 Spacer etch method for semiconductor device Feb. 26, 2002
6337287 High speed, high bandwidth, high density nonvolatile memory system Jan. 8, 2002
6335292 Method of controlling striations and CD loss in contact oxide etch Jan. 1, 2002
6331478 Methods for manufacturing semiconductor devices having chamfered metal silicide layers Dec. 18, 2001
6329302 Removal of a top IC die from a bottom IC die of a multichip IC package with preservation of interconnect Dec. 11, 2001
6329301 Method and apparatus for selective removal of material from wafer alignment marks Dec. 11, 2001
6326314 Integrated inductor with filled etch Dec. 4, 2001
6323136 Method of producing samples of semiconductor substrate with quantified amount of contamination Nov. 27, 2001
6319845 Method of purifying alkaline solution and method of etching semiconductor wafers Nov. 20, 2001
6313043 Manufacture of field emission element Nov. 6, 2001
6303514 Composition and method for selectively etching a silicon nitride film Oct. 16, 2001
6284670 Method of etching silicon wafer and silicon wafer Sep. 4, 2001
6284671 Selective electrochemical process for creating semiconductor nano-and micro-patterns Sep. 4, 2001
6274504 Minimizing metal corrosion during post metal solvent clean Aug. 14, 2001
6270929 Damascene T-gate using a relacs flow Aug. 7, 2001
6261974 Growth method of a polymer film Jul. 17, 2001

1 2 3 4 5


 
 
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