Class 205/676 - More than 20 weight percent organic material

Subclass of Class 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
Definition: Subject matter in which more than 20 percent by weight of
No. of patents: 32
Last issue date: 12/20/2011

Number	Title	Issue Date
8080148	Electropolishing process for cobalt and cobalt alloys The present invention relates to a method of electrochemical polishing of surfaces of cobalt or cobalt alloys. It employs an electrolyte comprising glycolic acid and at least one alkane-sulfonic acid with an alkyl residue that has 1 to 3 carbon atoms. This electroly...	12/20/2011
7566391	Methods and systems for removing materials from microfeature workpieces with organic and/or non-aqueous electrolytic media Methods and systems for removing materials from microfeature workpieces are disclosed. A method in accordance with one embodiment of the invention includes providing a microfeature workpiece having a substrate material and a conductive material that includes a refra...	07/28/2009
7524410	Methods and apparatus for removing conductive material from a microelectronic substrate A method and apparatus for removing conductive material from a microelectronic substrate is disclosed. One method includes disposing an electrolytic liquid between a conductive material of a substrate and at least one electrode, with the electrolytic liquid having a...	04/28/2009
7318278	Method of manufacture of a heart valve support frame Methods for forming a support frame for flexible leaflet heart valves from a starting blank include converting a two-dimensional starting blank into the three-dimensional support frame. The material may be superelastic, such as NITINOL, and the method may include be...	01/15/2008
7153411	Method for cleaning and polishing metallic alloys and articles cleaned or polished thereby A method of cleaning and polishing an alloy comprising at least one noble metal and at least one non-noble metal, the method including the steps of submerging said alloy in an electrolytic acidic bath comprising at least one chelating or complexing agent including s...	12/26/2006
7074317	Method for fabricating trench capacitors for large scale integrated semiconductor memories An electrochemical method is provided for producing trenches for trench capacitors in p-doped silicon with a very high diameter/depth aspect ratio for large scale integrated semiconductor memories. Trenches (macropores) having a diameter of less than about 100 nm an...	07/11/2006
6884338	Methods for polishing and/or cleaning copper interconnects and/or film and compositions therefor The present invention provides methods of polishing and/or cleaning copper interconnects using bis(perfluoroalkanesulfonyl) imide acids or copper tris(perfluoroalkanesulfonyl) methide acids compositions. ...	04/26/2005
6858124	Methods for polishing and/or cleaning copper interconnects and/or film and compositions therefor The present invention provides methods of polishing and/or cleaning copper interconnects using sulfonic acid compositions. ...	02/22/2005
6835300	Electropolishing solution and methods for its use and recovery An electrolyte solution containing an alkylene glycol and a chloride salt is useful for electropolishing metal substrates. An electropolishing method using the electrolyte solution is effective for polishing a varied of metals, including titanium and noble metals. T...	12/28/2004
6783657	Systems and methods for the electrolytic removal of metals from substrates The present invention provides methods and systems for the electrolytic removal of platinum and/or other of the Group 8-11 metals from substrates. ...	08/31/2004
6610194	Bath composition for electropolishing of titanium and method for using same A bath composition for the electropolishing of a metal surface made of nonalloyed titanium is disclosed. The bath composition may comprise sulfuric acid of 2 to 40% by volume, hydrofluoric acid of 10 to 18% by volume and acetic acid of 42 to 62% by volume...	08/26/2003
6579439	Electrolytic aluminum polishing processes This invention, in one aspect, relates to processes for electropolishing aluminum, in particular, aluminum alloy metal surfaces, by immersing the metal surface in a polishing solution and making the aluminum alloy material anodic. The polishing solution c...	06/17/2003
6238810	Process for using surface active agents to produce high etch gains for electrolytic capacitor manufacturing A surface active, viscosity modifying agent is used to promote additional tunnel initiation during the etching of high purity cubicity anode foil, preferably aluminum anode foil, to render it suitable for use in electrolytic capacitors. The anode foil is ...	05/29/2001
5318676	Photolithographic fabrication of luminescent images on porous silicon structures A polished wafer of single-crystal silicon (Si) is ohmically contacted on its backside to a copper wire to provide a working electrode. The wafer and a counterelectrode are immersed in a solution of aqueous HF and ethanol within an optical quality cuvette...	06/07/1994
5207866	Anisotropic single crystal silicon etching solution and method A method of anisotropically etching single crystal silicon includes providing single crystal silicon to be etched and placing it in an etching solution consisting essentially of R4 NOH and solvent wherein R is an alkyl group having between 0 an...	05/04/1993
5194127	Method for etching an aluminum foil for an electrolytic capacitor A method for chemically etching an aluminum foil for an aluminum electrolytic capacitor, which comprises immersing the aluminum foil in an etching solution containing a polymer electrolyte having cation exchange groups dissociable in the etching solution....	03/16/1993
5143587	Method for etching an aluminum foil for an electrolytic capacitor A method for etching an aluminum foil for an aluminum electrolytic capacitor, which comprises immersing the aluminum foil in an etching solution containing a polymer electrolyte having cation exchange groups dissociable in the etching solution, and applyi...	09/01/1992
5013373	Method for treating electrical steel by electroetching and electrical steel having permanent domain refinement Permanent domain refinement of grain oriented electrical steel strip is obtained in a high speed two-stage process. The process removes the glass in narrow regions which just expose the base metal. An electrolytic etch is then used to deepen the region in...	05/07/1991
4995954	Porous siliconformation and etching process for use in silicon micromachining A reproducible process for uniformly etching silicon from a series of micromechanical structures used in electrical devices and the like includes providing a micromechanical structure having a silicon layer with defined areas for removal thereon and an el...	02/26/1991
4671859	Process for the electrochemical graining of aluminum for use as printing plate supports The present invention relates to a process for the electrochemical graining of aluminum or aluminum alloys useful for printing plate supports, in which process an acid electrolyte containing ଲ-diketo compounds is employed; preferred are hydrochloric...	06/09/1987
4663005	Electropolishing process An electrolytic process employing a non-toxic electrolytic solution for anodically producing a high surface luster on copper, silver, gold, and alloys of the same is disclosed. The electrolytic solution employs thiourea as the principal carrier electrolyt...	05/05/1987
4613417	Semiconductor etching process A photoelectrochemical etching process is described for n-type and semi-insulating III-V semiconductor compounds that contain aluminum or indium (AlGaAs, InGaAs) in which a non-aqueous electrolyte is used. High etch rates are achieved without harm to expo...	09/23/1986
4564425	Electrochemical etching of a mercury-cadmium-telluride substrate In this disclosure there is described a novel method for using electrochemical etching to finely polish the surface of a (Hg,Cd)Te substrate resulting in a defect-free infrared detector with enhanced electronic properties. The fine surface polishing is ob...	01/14/1986
4496634	Diffraction grating wire arrays in parallel Arrays of substantially parallel metallic wires of micron and sub-micron dimensions are made by directionally solidifying the components of a eutectic alloy system as a thin film and subsequently removing at least one of the phases. The arrays are useful,...	01/29/1985
4482443	Photoelectrochemical etching of n-type silicon Photoelectrochemical processing of semiconductors is highly desirable because of its versatility and simplicity. The invention is a photoelectrochemical etching procedure for n-type silicon in which an alcohol based solution of hydrofluoric acid is used a...	11/13/1984
4477324	Making metal eutectic fine wire arrays Arrays of substantially parallel metallic wires of micron and sub-micron dimensions are made by directionally solidifying the components of a eutectic alloy system as a thin film and subsequently removing at least one of the phases. The arrays are useful,...	10/16/1984
4411751	Method of anodically deburring articles of steel or aluminium alloys in an electrolytic bath, and a bath for carrying out the method Articles of steel or aluminium alloy are anodically deburred in an acid solution (pH not above 6.5) containing...	10/25/1983
4405422	Method of anodically deburring articles of copper or copper alloy Articles of copper or copper alloy are anodically deburred in an acid solution (pH not above 6.5) containing The bath voltage is to be within the range of 5 to 30 volts, and the current density (at the anode) is to be within the range of 2 to 50 amperes p...	09/20/1983
4339315	Process for preparing lithographic printing plate bases There is disclosed a process for preparing lithographic printing plate bases, which comprises electrolytically etching a sheet made of aluminum or an aluminum alloy in an aqueous electrolytic solution containing hydrochloric acid and citric or malic acid ...	07/13/1982
4269677	Anodic deburring or brightening of steel articles Anodic deburring or brightening of steel articles is carried out in an alkaline solution containing, per liter of the solution, at least 200 grams of water, at least 300 grams of polyhydric alcohol and at least 200 grams of alkali sulphamate....	05/26/1981
4234397	Nondestructive metallographic examination of gas turbine components A method is disclosed for the nondestructive examination of coated gas turbine components after service. An electrolytic polishing technique is used to uniformly remove the coating from a portion of the component. An electrolytic etching process is then u...	11/18/1980
3996119	Method for electrolytic etching of gray irons with Stead's reagent A process for electrolytically etching phosphorus bearing gray irons using Stead's reagent is provided. Stead's reagent, which is used as the electrolyte in the etching process is composed of 1.2% cupric chloride, 4.6% magnesium chloride, 2.8% HCl and 91....	12/07/1976

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Class 205/676 - More than 20 weight percent organic material