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| Number | Title | Issue Date |
| 7435301 | Cleaning solution of silicon germanium layer and cleaning method using the same Disclosed are a cleaning solution for preventing damage of a silicon germanium layer when cleaning a semiconductor device including the silicon germanium layer and a cleaning method using the same. The cleaning solution of a silicon germanium layer includes from abo... | 10/14/2008 |
| 7410544 | Method for cleaning electroless process tank A method for cleaning a metal plating tank is provided herein. In accordance with the method, the tank is exposed to a first acid (103), after which the tank is exposed to a second acid in the presence of a first oxidizing agent (107). ... | 08/12/2008 |
| 7367346 | Method for cleaning hollow tubing and fibers Hollow porous fibers containing adhered contaminants are cleaned to remove the contaminants by backflushing a liquid to fill the pores, and adding a flow of gas so as to form a two-phase mixture of gas and bubbles of liquid that can scrub the fibers, loosening the c... | 05/06/2008 |
| 7337788 | Compositions useful for cleaning solvent-based paint from paint delivery installations Uncured solvent-based paint may be flushed from a paint delivery installation using a substantially non-aqueous composition containing one or more organic solvents and a polymer having acid and/or amine functional groups. ... | 03/04/2008 |
| 7331354 | Cleaning of tray columns which have been used for rectificatively treating liquids comprising (meth)acrylic acid and/or esters thereof In process for cleaning tray columns which are used for the purposes of rectifiying liquids comprising (meth)acrylic compounds, a basic liquid is conveyed downward through the tray column and a gas is passed through the column in countercurrent to the basic liquid a... | 02/19/2008 |
| 7305998 | Mobile flushing unit and process In one embodiment of the invention, a method of cleaning a workpiece is disclosed. The method comprises providing a mobile flushing unit and servicing the workpiece as follows: a) connecting a flexible hose of the mobile flushing unit to one end of the workpiece and... | 12/11/2007 |
| 7293569 | Alkylsilanes as solvents for low vapor pressure precursors Compositions and methods for cleaning deposition systems utilizing alkylsilanes are described herein. In an embodiment, a method of cleaning a semiconductor fabrication system comprises flushing the system with a solvent comprising at least one alkylsilane. In anoth... | 11/13/2007 |
| 7291685 | Process for producing low polymer of α-olefin There is disclosed a process for producing an α-olefin oligomer by subjecting an α-olefin to oligomerization reaction in the presence of a catalyst and an organic solvent which comprises the step of spraying a solvent containing the organic solvent in the form of ... | 11/06/2007 |
| 7252095 | Mobile flushing unit and process In one embodiment of the invention, a method of cleaning a workpiece is disclosed. The method comprises providing a mobile flushing unit and servicing the workpiece as follows: a) connecting a flexible hose of the mobile flushing unit to one end of the workpiece and... | 08/07/2007 |
| 7252720 | Removal of prion infectivity Prion infectivity adsorbed onto substrates (for example, chromatographic columns used to fractionate blood plasma) is removed by treatment with 2M sodium chloride. Optionally, the substrate is further washed with 0.1 M sodium hydroxide. ... | 08/07/2007 |
| 7219675 | Cleaning composition and method A novel cleaning composition comprises a dilutant, a wetting agent, a chelating agent, an alkaline builder, and a chlorine provider. The dilutant is preferably water. The wetting agent is alkoxylated alcohol. The chelating agent is an acrylic/maleic acid copolymer. ... | 05/22/2007 |
| 7198052 | Mobile flushing unit and process In one embodiment of the invention, a method of cleaning a workpiece is disclosed. The method comprises providing a mobile flushing unit and servicing the workpiece as follows: a) connecting a flexible hose of the mobile flushing unit to one end of the workpiece and... | 04/03/2007 |
| 7179775 | Coating removal compositions An aqueous coating removal composition containing: a) an alkoxylated aromatic alcohol, b) an amine; and c) an inorganic base is provided. The coating removal compositions are useful in cleaning coatings such as paint from substrate surfaces and may be formulated to ... | 02/20/2007 |
| 7151080 | Composition for stripping coatings from substrates A composition for stripping and cleaning organic coatings from substrates, comprising a solution of high-boiling alcohols, preferably polyglycols, a surfactant, preferably a nonylphenol ethoxylate, and an alkali metal hydroxide, said composition being essentially fr... | 12/19/2006 |
| 7115171 | Method for removing engine deposits from turbine components and composition for use in same A method and cleaning composition for removing engine deposits from turbine components, in particular turbine disks and turbine shafts. This method comprises the following steps: (a) providing a turbine component having a surface with engine deposits thereon, wherei... | 10/03/2006 |
| 7048803 | Method of dissolving scale A method of dissolving scale comprises contacting the scale with a solution of an alkali metal bisulfate. Another method of dissolving scale comprises contacting the scale with a solution of an alkali metal bisulfate and a strong mineral acid. A further method of di... | 05/23/2006 |
| 6991685 | Low temperature cleaning The invention relates to a method of low temperature cleaning and applying an antimicrobial treatment to food and beverage plant equipment. In addition, the method includes carbon dioxide compatible chemistry. The method may be achieved through a multi-step method. | 01/31/2006 |
| 6986356 | Beverage flow line cleaner with safety indicator and method of use A method of cleaning potable liquid flow lines employing a high pH caustic cleaning solution or a low pH acid cleaning solution with a stable dye in sufficient concentration so as to have a visible color when the solution is further diluted. The cleaning solution is... | 01/17/2006 |
| 6982242 | Aqueous detergent composition and method of use An aqueous detergent composition is provided containing phosphoric acid or salt thereof, an organic phosphate surfactant, a nonionic surfactant, and water. The aqueous detergent composition may be employed to improved the adhesion of a coating to a substrate. Also p... | 01/03/2006 |
| 6953507 | Low temperature cleaning The invention relates to a method of low temperature cleaning and applying an antimicrobial treatment to food and beverage plant equipment. In addition, the method includes carbon dioxide compatible chemistry. The method may be achieved through a multi-step method. | 10/11/2005 |
| 6926776 | Method for cleaning pressurized containers containing chlorine gas or sulfur dioxide gas The present invention relates to a method for cleaning a pressurized container having at least one chemical contained therein such as, for example, chlorine gas or sulfur dioxide gas. The pressurized container may be any type of container able to store chemicals und... | 08/09/2005 |
| 6905550 | Method of removing organic materials using aqueous cleaning solutions Removal of water-insoluble organic residues from inorganic surfaces can be accomplished in aqueous cleaning solutions containing an oxidant at a preselected temperature wherein the pH is adjusted with respect to the isoelectric point of the surface material to be re... | 06/14/2005 |
| 6902628 | Method of cleaning a coated process chamber component In a method of cleaning and refurbishing a process chamber component having a metal coating having a surface thereon, the surface of the metal coating is immersed in an acidic solution to remove at least a portion of the process deposits from the surface. Thereafter... | 06/07/2005 |
| 6899767 | Method of cleaning processing chamber of semiconductor processing apparatus A method of cleaning the interior of a processing chamber first performs a halogenation treatment by supplying a treatment gas containing a halogenating gas into the processing chamber and heating a support member for a target substrate, thereby halogenating a metal... | 05/31/2005 |
| 6887597 | Methods and composition for cleaning and passivating fuel cell systems A cleaner-passivator composition and method for treating a fuel cell cooling system are described. The cleaner-passivator comprises a complexing agent, a surfactant, a corrosion inhibitor, and a solvent. The cleaner-passivator reduces the contaminants circulating in... | 05/03/2005 |
| 6863740 | Cleaning method of ceramic member Disclosed is a cleaning method of a ceramic member, which permits removing with a high accuracy the contaminants from a ceramic member contaminated with the contaminant. The cleaning method comprises the steps of processing the contaminated ceramic member with an al... | 03/08/2005 |
| 6830629 | Method for treating brass Brass articles having leachable lead are contacted with an aqueous caustic solution that contains a chelating agent. A brass article can optionally be post-treated by contacting it with an aqueous solution containing anazole. ... | 12/14/2004 |
| 6817366 | Beverage flow line cleaner with safety indicator and method of use A method of cleaning potable liquid flow lines employing a high pH caustic cleaning solution or a low pH acid cleaning solution with a stable dye in sufficient concentration so as to have a visible color when the solution is further diluted. The cleaning solution is... | 11/16/2004 |
| 6772771 | Decoke enhancers for transfer line exchangers In a steam cracking operation the formation of coke is a problem which needs to be overcome. While significant work has been done on decoking of furnaces little work has been done regarding transfer line exchangers. Coking of transfer line exchangers (TLE) may be re... | 08/10/2004 |
| 6770150 | Process for removing deposits from enclosed chambers Alkaline and acid cleaning solutions (180, 182), are used sequentially for removing organic and inorganic residues, respectively, from the chamber. The two cleaning solutions are stored in separate storage containers (52, 54) carried by the cart. The a... | 08/03/2004 |
| 6761774 | Composition and method for the in situ removal scale from a substrate A composition and method for the removal of scale from a substrate are disclosed. The composition and method are more specifically utilized for the in situ removal of silicate-containing scale from interior surfaces of boilers and other heat exchange equipment. The ... | 07/13/2004 |
| 6743299 | Method of cleaning infant feeding bottles A method of cleaning articles, such as infant feeding bottles is disclosed. The method provides for the use of alkali metal chloride, more particularly sodium chloride. The salt is deposited into the article to be cleaned, then water is added, and then the article i... | 06/01/2004 |
| 6739380 | Method and apparatus for removing ceramic material from cast components The removal of ceramic material from the interior of cast metallic components is accomplished in a closed system. A vessel within the system is filled with a chemical leaching fluid that immerses the cast component having the ceramic material and/or ceramic cores th... | 05/25/2004 |
| 6722377 | Process for cleaning reactors This invention relates to a process for cleaning reactors. The process utilizes a solvent fed from multiple pressure sources to clean reactors of residual polymers. The reactors are equipped with agitators and stationary nozzles aimed at the agitator blades. The agi... | 04/20/2004 |
| 6712079 | Process of cleaning the inner surface of a water-containing vessel The present invention relates to a process of cleaning the inner surfaces of a liquid-containing vessel with an automatic cleaning device, wherein said process is performed by said device and comprises the steps of applying a cleaning composition onto at least porti... | 03/30/2004 |
| 6695927 | Method and cleaning solution for cleaning a container A method and a solution are provided for cleaning a container, in particular a boiler of a conventional power station. The container is degreased and pickled in one method step using an alkaline cleaning solution. A suitable cleaning solution includes, fo... | 02/24/2004 |
| 6695928 | Method for production of (meth) acrylic acid and/or (meth)acrylic esters A method for the production of (meth)acrylic acid and/or a (meth)acrylic ester is provided. This method for the production of (meth)acrylic acid and/or a (meth)acrylic ester includes washing the device constructed for the production thereof with a basic s... | 02/24/2004 |
| 6679274 | Clean-in-place method for cleaning solution delivery systemes/lines A method is taught for cleaning photographic chemistry product fouling, including a proteinaceous portion and a non-proteinaceous portion from a liquid delivery system. The method comprises the steps of displacing resident product solution in the piping w... | 01/20/2004 |
| 6676769 | Apparatus and method for cleaning a furnace torch An apparatus and a method for cleaning a torch for a vertical furnace used in semiconductor processing are disclosed. The apparatus is constructed by two main components of a basket-shaped fixture body and a cleaning bath. The fixture body is formed of cy... | 01/13/2004 |
| 6663720 | Method of prevent an etcher from being eroded A method of prevention maintenance preventing parts of an etcher from being eroded is disclosed. First, a layer of hydrogen-free chemical compound is formed on surface of the parts of the etcher according to one embodiment of the present invention. Otherw... | 12/16/2003 |
