For Removing Heat-degraded Food Residue From Solid Surface (e.g., Oven Interior, Grill, Cooking Pot Exterior, Etc.) Patents (Class 510/197)
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Patent number: 6787515Abstract: A hard-surface cleaning composition for removing cooked-, baked-, or burnt-on food soil from cookware and tableware, the composition comprising a solvent system, wherein said solvent system comprises: a mono-, di- or tri-ethylene glycol phenyl ether or a mixture thereof; and a di- or tri-propylene glycol alkyl ether having an alkyl chain containing of from about 1 to about 5 carbon atoms or a mixture thereof.Type: GrantFiled: July 17, 2002Date of Patent: September 7, 2004Assignee: The Procter & Gamble CompanyInventors: Peter Robert Foley, Chanchal Kumar Ghosh, Howard David Hutton, Ronald David Turner
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Patent number: 6784148Abstract: The present invention is a non-corrosive, low-fuming oven cleaning composition that can be used easily on vertical oven surfaces. The present invention is a cleaning composition containing a tripolyphosphate and a thickening agent to promote in adherence to vertical surfaces.Type: GrantFiled: April 18, 2001Date of Patent: August 31, 2004Assignee: Kay Chemical, IncInventors: Tami Jo Tadrowski, Karen Odom Rigley
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Patent number: 6773625Abstract: Dry bleach compositions particularly suitable for cleaning of hard surfaces or fabrics which, upon mixing with water, form a mixture that is easily removed from surfaces upon standing.Type: GrantFiled: August 26, 2002Date of Patent: August 10, 2004Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: Nancy Ann Falk, Pamela Chau Lam
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Patent number: 6767874Abstract: A cleaning composition for removing organic deposits from hard to reach surfaces. In its basic embodiment, the cleaning composition comprises: a) a water miscible solvent; b) an inorganic salt in crystal form; and c) water. The inorganic salt in crystal form comprises from about 30 to about 70% weight of the total composition.Type: GrantFiled: August 31, 2001Date of Patent: July 27, 2004Inventor: Gustavo M. Gonzalez
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Patent number: 6759377Abstract: A detergent for glass-ceramic surfaces has a certain abrasive agent content and a pH value lower than about 6. The abrasive agent contains particles of an organic material, preferably in an amount of at least about 20% of the abrasive agent, and more preferably substantially the entire abrasive agent. The organic material may be a polyolefin or polyurethane, for example, and may be predominantly present as particles with a particle size in the range of about 10 to 1000 &mgr;m. The abrasive agent may also include mineral particles.Type: GrantFiled: January 28, 2002Date of Patent: July 6, 2004Assignee: Reckitt Benckiser N.V.Inventors: Marion Hackenthal, Alexandra Hary, Mike Kosub, Edgar Endlein
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Patent number: 6723692Abstract: According to the present invention there is provided a hard surface cleaning composition for removing cooked-, baked-, or burnt-on food soil from cookware and table ware, having surface tension of less than 30 mN/m and comprising an organic solvent system and no more than: 0.09% by weight of the composition of ethers having molecular weight of less than 210 0.007% by weight of the composition of esters having molecular weight of less than 110 0.045% by weight of the composition of glycol ethers having molecular weight of less than 130 0.0025% by weight of the composition of ketones having molecular weight of less than 90.Type: GrantFiled: March 28, 2002Date of Patent: April 20, 2004Assignee: The Procter & Gamble CompanyInventors: Peter Robert Foley, Howard David Hutton
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Patent number: 6686325Abstract: An alkaline sensitive metal cleaning composition is provided. The alkaline sensitive metal cleaning composition contains an alkaline concentrate and a corrosion inhibitor concentrate. The alkaline concentrate includes a source of alkalinity in an amount sufficient to provide a use solution having a pH of at least 10.0, and a first chelant component that exhibits soil removal properties when used at a pH of at least 10.0. The corrosion inhibitor concentrate includes a corrosion inhibitor component for reducing corrosion of alkaline sensitive metals when used in a use solution having a pH of at least 10.0, a second chelant component for stabilizing the corrosion inhibitor in the corrosion inhibitor concentrate when the corrosion inhibitor concentrate is provided at a pH that is less than 8.0, and a surfactant component for providing cleaning properties when used at a pH of at least 10.0.Type: GrantFiled: March 15, 2002Date of Patent: February 3, 2004Assignee: Ecolab Inc.Inventors: Jerry D. Hoyt, Michael E. Besse, Terry J. Klos, Mark Levitt, Richard O. Ruhr
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Patent number: 6683036Abstract: A hard surface cleaning composition for removing cooked-, baked- or burnt-on soils from cookware and tableware, the composition comprising an organoamine solvent and wherein the composition has a liquid surface tension of less than about 24.5 mN/m and a pH, as measured in a 10% solution in distilled water, or least than 10.5. The composition can be used as pre-treatment prior to the dishwashing process. The composition provides excellent removal of polymerized grease from metal and glass substrates.Type: GrantFiled: July 19, 2001Date of Patent: January 27, 2004Assignee: The Procter & Gamble CompanyInventors: Peter Robert Foley, Howard David Hutton, III, Carl-Eric Kaiser, Yong Zhu, Lucio Pieroni, Brian Xiaqing Song
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Patent number: 6667289Abstract: Aqueous based cleaning compositions simultaneously featuring low residue deposition, sanitization and/or disinfecting of treated hard surfaces, and good cleaning characteristics are provided. The compositions include the following ingredients: (a) a quaternary ammonium surfactant compound having germicidal properties; (b) a surfactant system which includes at least one amine oxide surfactant and at least one further surfactant selected from carboxylates and N-acyl amino acid surfactants; (c) a solvent system containing an alkylene glycol ether solvent further with a C1-C6 alcohol; (d) an alkalizing agent; and (e) water.Type: GrantFiled: November 19, 2001Date of Patent: December 23, 2003Assignee: Reckitt Benckiser Inc.Inventors: Kenneth Allen Harrison, Jeanne Marie Weller, Ann Marie Lynch
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Patent number: 6630434Abstract: A low viscosity aqueous cleaning composition provides increasing viscosity upon dilution which provides a high viscosity diluted cleaning composition having solvents compatible with the rod micelle thickener and the cleaning system that clings for an extended period of time in a thickened form containing cleaning system ingredients that can penetrate and remove hard baked-on soils on vertical surfaces in cleaning units. The composition contains active cleaning ingredients (acid, alkaline and enzyme) that, in combination with thickening systems, provide the useful properties. The thickened materials can be applied on cold or hot surfaces and can successfully penetrate, soften and remove baked-on food soil on a variety of surfaces including oven walls, doors and grills, baking dishes, utensils, etc.Type: GrantFiled: May 21, 2001Date of Patent: October 7, 2003Assignee: Ecolab Inc.Inventors: Michael E. Besse, Richard O. Ruhr, Gerald K. Wichmann, Timothy A. Gutzmann
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Patent number: 6613376Abstract: The pan release coating is provided which includes water, mono and diclycerides, polysorbate, and an antimicrobial effective amount of acetic acid, citric acid and sodium benzoate. Desirably, the composition of the present invention is composed of water in an amount of 77% to 95% by weight, acetic acid in the amount of 0.3 to 1% by weight, citric acid in the amount of 0.02 to 1.0% by weight, sodium benzoate in an amount of 0.02 to 0.3% by weight, monoglycerides and diglycerides in the amount of 2 to 8% by weight and polysorbate in the amount of 2 to 7% by weight. Desirably, lecithin is also included. The resulting product has a pH of 4.5 or below, desirably between about 3.5 and 4.5, and most desirably a pH of 3.6 to 3.9. The product has a shelf life of 12 months or longer at room temperature, without refrigeration or a sealed container.Type: GrantFiled: March 12, 2001Date of Patent: September 2, 2003Assignees: Par-Way Group, Inc., Sunnycrest BNB, Inc.Inventors: Robert M. Smith, John P. Starr
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Patent number: 6596676Abstract: A colloidal composition for application to the walls of a clean, warm oven and accessories contained therein to prevent the adherence of carbon-based residues thereto. The composition is shaken to disburse the colloidal particles, then applied to the clean, warm (˜140° F.) surface of the oven walls with an applicator such as a brush or sponge and the oven is ready for use. After a coating of carbonized residue has accumulated on the composition-coated surface, both the residue and the composition are easily removed with a mild detergent solution using a sponge or towel. The composition is nontoxic, environmentally safe and its use does not expose the user to harsh chemicals or fumes. In a preferred embodiment, the colloidal composition is provided in a container having a removable lid with a fine-bristled nylon applicator brush affixed thereto.Type: GrantFiled: November 18, 2002Date of Patent: July 22, 2003Inventor: Robert Prochilo
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Patent number: 6592677Abstract: The present invention provides a method of removing a Cu-contamination from a wafer surface having a Cu-based metal region, comprising the step of: carrying out a cleaning process by use of a cleaning solution free of HF and capable of oxidation to the wafer surface for not only removing the Cu-contamination from the wafer surface but also oxidizing the wafer surface to cause the wafer surface to have a hydrophilicity.Type: GrantFiled: October 4, 2000Date of Patent: July 15, 2003Assignee: NEC Electronics CorporationInventors: Hiroaki Tomimori, Hidemitsu Aoki
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Patent number: 6551985Abstract: A liquid acidic composition having a sulfamic acid, a second acid, and an acid-stable polymer selected from the group consisting of a sulphonated polystyrene polymer, a vinylpyrrolidone homopolymer or copolymer, and mixtures thereof, to remove limescale-containing stains from a hard-surface.Type: GrantFiled: August 17, 2000Date of Patent: April 22, 2003Assignee: The Procter & Gamble CompanyInventors: Giulia Ottavia Bianchetti, Elisabetta L. Russo, Luigi Pace
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Patent number: 6537960Abstract: A low foaming surfactant blend for use in highly alkaline conditions including at least one C3 to C10 alkyl polyglucoside, at least one amine oxide, at least one polycarboxylated alcohol alkoxylate, and at least one alcohol alkoxylate. The blend may combined with other optional ingredients including a source of alkalinity, water conditioning agents, a source of chlorine, silicates, solvents, high foam amine oxides, other surfactants, and so forth to form a cleaning concentrate. The concentrate may be diluted to use solutions with water.Type: GrantFiled: August 27, 2001Date of Patent: March 25, 2003Assignee: Ecolab Inc.Inventors: Richard O. Ruhr, Nathan D. Peitersen
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Publication number: 20020082178Abstract: A low viscosity aqueous cleaning composition provides increasing viscosity upon dilution which provides a high viscosity diluted cleaning composition having solvents compatible with the rod micelle thickener and the cleaning system that clings for an extended period of time in a thickened form containing cleaning system ingredients that can penetrate and remove hard baked-on soils on vertical surfaces in cleaning units. The composition contains active cleaning ingredients (acid, alkaline and enzyme) that, in combination with thickening systems, provide the useful properties. The thickened materials can be applied on cold or hot surfaces and can successfully penetrate, soften and remove baked-on food soil on a variety of surfaces including oven walls, doors and grills, baking dishes, utensils, etc.Type: ApplicationFiled: May 21, 2001Publication date: June 27, 2002Applicant: Ecolab Inc.Inventors: Michael E. Besse, Richard O. Ruhr, Gerald K. Wichmann, Timothy A. Gutzmann
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Patent number: 6368420Abstract: A chemical cleaning system for a multi-tank or a single-tank mechanical warewashing machine is provided, having at least two separate components for aqueous dissolution or dilution to respective use concentrations, a first component comprising an enzyme or a mixture of an enzyme and a cleaning agent, and a second component comprising a bleach, wherein the first component is introduced into a wash zone or step and wherein the second component is introduced into a post-rinse zone or step.Type: GrantFiled: December 23, 1998Date of Patent: April 9, 2002Assignee: Diversey Lever, Inc.Inventors: Petrus Adrianus Angevaare, Paul Flu, John Richard Nicholson, Frederik Jan Schepers
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Patent number: 6319884Abstract: Non-aqueous cleaning compositions capable of removing cured polyimides and other polymers from a metal circuitry containing substrate such as a semiconductor device for rework and other purposes without any significant adverse affect on the circuitry are provided consisting essentially of alkanolamines, preferably monoethanolamine or monoethanolamine-diethanolamine mixtures and optionally with a solvent such as NMP in an amount less than about 50% by weight. A method is also provided for removing polyimide coatings and other polymers from semiconductor devices using the cleaning compositions of the invention.Type: GrantFiled: June 16, 1998Date of Patent: November 20, 2001Assignee: International Business Machines CorporationInventors: Marilyn R. Leduc, Harold G. Linde, Gary P. Viens
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Patent number: 6284056Abstract: A composition useful for removal of organic deposits from a ceramic, glass, plastic, or metal substrate, and a method of use thereof. In a preferred embodiment, the invention pertains to a composition for cleaning an organically fouled smoking apparatus such as a pipe, a cigarette holder, or a water pipe, and to a process whereby the smoking apparatus is cleaned and disinfected.Type: GrantFiled: August 11, 1999Date of Patent: September 4, 2001Inventor: Gustavo M. Gonzalez
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Patent number: 6268324Abstract: A low viscosity aqueous cleaning composition provides increasing viscosity upon dilution which provides a high viscosity diluted cleaning composition having solvents compatible with the rod micelle thickener and the cleaning system that clings for an extended period of time in a thickened form containing cleaning system ingredients that can penetrate and remove hard baked-on soils on vertical surfaces in cleaning units. The composition contains active cleaning ingredients (acid, alkaline and enzyme) that, in combination with thickening systems, provide the useful properties. The thickened materials can be applied on cold or hot surfaces and can successfully penetrate, soften and remove baked-on food soil on a variety of surfaces including oven walls, doors and grills, baking dishes, utensils, etc.Type: GrantFiled: January 6, 1995Date of Patent: July 31, 2001Assignee: Ecolab Inc.Inventors: Michael E. Besse, Richard O. Ruhr, Gerald K. Wichmann, Timothy A. Gutzmann
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Patent number: 6197739Abstract: Compositions for use as soil removing agents in the food processing industry are disclosed. Food soiled surfaces in food manufacturing and preparation areas can be cleaned. The compositions are manufactured in the form of a concentrate which is diluted with water and used. The cleaning materials are made in a two part system which are diluted with a diluent source and mixed prior to use. The products contain high quality cleaning compositions and use a variety of active ingredients. The preferred materials, in a two part system contain detergent compositions, enzymes that degrade food compositions, surfactants, low alkaline builders, water conditioning (softening) agents, and optionally a variety of formulary adjuvants depending on product form.Type: GrantFiled: August 19, 1997Date of Patent: March 6, 2001Assignee: Ecolab Inc.Inventors: Thomas R. Oakes, Kristine K. Wick, Bruce R. Cords, Sandra L. Bull, Francis L. Richter
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Patent number: 6194367Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled metal surfaces such as food fryers, baking pans, high temperature pasteurizers, and beer kettles, ceramic surfaces such as restaurant grade ceramic china plates and platters, and plastic surfaces. The cleaning composition is noncaustic and includes a peroxygen compound, a chelate, and a metasilicate and/or sesquisilicate. A preferred cleaning composition further includes a surfactant and hydrated builder.Type: GrantFiled: April 27, 1999Date of Patent: February 27, 2001Assignee: Charvid Limited Liability Co.Inventor: Charles Bullick Talley
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Patent number: 6156716Abstract: Applicant discloses heavy duty degreaser cleaning compositions having reduced alkalinity and reduced corrosion properties for removing grease and/or oil from surfaces, and that contain:(a) about 1 to about 40 wt % of a builder having the following structure or a salt thereof: ##STR1## (b) about 1 to about 40 wt % of an alkaline metal carbonate; (c) about 0 to about 20 wt % of a surfactant;(d) 0 to about 20 wt % of a hydrotropic solvent;(e) 0 to about 10 wt % of a source of alkalinity; and(f) balance water.Type: GrantFiled: May 7, 1999Date of Patent: December 5, 2000Assignee: Kay Chemical IncorporatedInventor: Fahim U. Ahmed
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Patent number: 6080709Abstract: The present invention relates to a cleaning solution for cleaning substrates, to which a metallic wiring has been applied, being capable of easily removing the metallic impurities of the substrate surface without corroding the metal, not putting a strain on the environment, and not causing a shelf life problem.The cleaning solution comprising at least one member selected from a group consisting of oxalic acid, ammonium oxalate and polyaminocarboxylic acids, but contains no hydrogen fluoride.Type: GrantFiled: August 11, 1998Date of Patent: June 27, 2000Assignees: Kanto Kagaku Kabushiki Kaisha, NEC CorporationInventors: Norio Ishikawa, Kiyoto Mori, Hidemitsu Aoki
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Patent number: 6043207Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled metal surfaces such as food fryers, baking pans, high temperature pasteurizers, and beer kettles, ceramic surfaces such as restaurant grade ceramic china plates and platters, and plastic surfaces. The cleaning composition is noncaustic and includes a peroxygen compound, a chelate, and a metasilicate and/or sesquisilicate. A preferred cleaning composition further includes a surfactant and hydrated builder.Type: GrantFiled: August 3, 1998Date of Patent: March 28, 2000Assignee: Charvid Limited Liability Co.Inventor: Charles Bullick Talley
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Patent number: 6034048Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled metal surfaces such as food fryers, baking pans, high temperature pasteurizers, and beer kettles, ceramic surfaces such as restaurant grade ceramic china plates and platters, and plastic surfaces. The cleaning composition is noncaustic and includes a peroxygen compound, a chelate, and an alkali salt in both hydrated and anhydrous forms. A preferred cleaning composition further includes a surfactant.Type: GrantFiled: August 4, 1998Date of Patent: March 7, 2000Assignee: Charvid Limited Liability Co.Inventor: Charles Bullick Talley
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Patent number: 5998358Abstract: The invention relates to compositions and methods for cleaning typically organic beverage and food soils. The cleaning composition is formulated to remove carbohydrate and proteinaceous soils from hard surfaces. The formulations of the invention are directed to remove carbohydrate and proteinaceous soils from beverage manufacturing locations such as soils arising in the manufacture of malt beverages, fruit juices, dairy products, etc.Type: GrantFiled: March 23, 1999Date of Patent: December 7, 1999Assignee: Ecolab Inc.Inventors: Brandon L. Herdt, David A. Halsrud
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Patent number: 5977054Abstract: Disclosed are mildly acidic liquid compositions for use in cleaning hard surfaces. The compositions contain from about 1% to about 60% of an amine oxide detergent surfactant, an aqueous carrier liquid, and an acidifying agent having a pK.sub.a of less than about 6.0. The compositions contain enough of the acidifying agent to protonate at least about 10% of the amine oxide species within the compositions and to provide a composition pH of between about 3 and 7. These no-rinse liquid hard surface cleaning compositions have excellent cleaning properties, they do not leave a visible residue when they dry, and they cause minimal or no staining of vinyl surfaces. Also disclosed are a method for cleaning vinyl surfaces using the liquid compositions, and non-liquid compositions from which the mildly acidic liquid compositions can easily be obtained by adding an aqueous liquid.Type: GrantFiled: October 15, 1996Date of Patent: November 2, 1999Assignee: The Procter & Gamble CompanyInventor: Thomas James Wierenga
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Patent number: 5965503Abstract: A gel for cleaning hard surfaces that is formed by mixing water and a detergent composition comprising (i) a first surfactant, wherein the first surfactant is an amine oxide or a betaine or a tetraalkylammoniumchloride, and (ii) a second surfactant, wherein the second surfactant is an alkali metal salt of a fatty acid together with Na.sup.+ from NaCl, wherein the ratio of the first surfactant and the second surfactant is 1:10-10:1, (b) water, wherein said detergent composition is mixed with a sufficient amount of water to induce a phase change from a liquid phase to a gel phase, wherein a gel is formed having a surfactant concentration in the range of 0.1-25%, and (c) one or more enzymes.Type: GrantFiled: November 3, 1995Date of Patent: October 12, 1999Assignee: Novo Nordisk A/SInventors: Poul N.o slashed.rgaard Christensen, Bo Kalum, Otto Andresen
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Patent number: 5929007Abstract: Alkaline aqueous hard surface cleaning compositions which exhibit good cleaning efficacy against hardened dried or baked on greasy soil deposits. They are storage stable, and are not undesirably irritating to the skin or mucous tissues of the user. These compositions comprise in percent by weight (based on 100% total weight of a composition):0.01-0.85% wt. nonionic surfactant compound based on an amine oxide;0-1.5% wt. chelating agent;0.01-2.5% wt. caustic;3.0-9.0% wt. glycol ether solvent system comprising one glycol ether or glycol ether acetate solvent having a solubility in water of not more than 20% wt., and a second glycol ether or glycol ether acetate having a solubility of approximately 100% wt., wherein the ratio of the former to the latter is from 0.5:1 to 1.5:1;0-5.0% wt. of a water soluble amine containing organic compound;0-2.5% wt. soil anti-redeposition agent;0-2.5% wt. optional constituents.Type: GrantFiled: April 11, 1997Date of Patent: July 27, 1999Assignee: Reckitt & Colman Inc.Inventor: James Feng
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Patent number: 5922667Abstract: The invention relates to a cleaner concentrate composition which can be diluted to form a viscous use solution, the cleaner composition comprising:an ammonium compound and/or an amphoteric compound; andan anionic surfactant, wherein the composition is free of amine oxide.Type: GrantFiled: March 14, 1997Date of Patent: July 13, 1999Assignee: Diversey Lever, Inc.Inventors: Eduard C. van Baggem, Norman Jason Pritchard, Gijsbertus de Goederen, Ruben E. M. J. Jakobs
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Patent number: 5898024Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled metal surfaces such as food fryers, baking pans, high temperature pasteurizers, and beer kettles, ceramic surfaces such as restaurant grade ceramic china plates and platters, and plastic surfaces. The cleaning composition is noncaustic and includes a peroxygen compound, a chelate, and a metasilicate and/or sesquisilicate. A preferred cleaning composition further includes a surfactant and hydrated builder.Type: GrantFiled: January 9, 1997Date of Patent: April 27, 1999Assignee: Charvid Limited LiabilityInventor: Charles Bullick Talley
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Patent number: 5863345Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled surfaces such as food fryers, baking pans, high temperature pasteurizers, beer kettles and similar equipment that normally requires caustic soda based cleaners to clean. The present invention is also useful in cleaning ceramics such as restaurant grade ceramic china plates and platters. The present invention is particularly useful in cleaning brass and aluminum parts and equipment without causing corrosion damage. Further, since the cleaning composition of the present invention is not based on caustic soda, the composition is not considered hazardous. Further, the cleaning composition of the present invention dissolves readily in water, providing a solution that can be used in mechanical sprayers, soak-tanks and clean-in-place equipment. Also the cleaning composition may be effectively used at lower temperatures than caustic cleaning agents.Type: GrantFiled: January 22, 1997Date of Patent: January 26, 1999Assignee: Charvid Limited Liability CompanyInventor: Charles Bullick Talley
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Patent number: 5854187Abstract: The invention provides a concentrated, dilutable cleaning composition which comprises a novel microemulsion comprising a nonionic surfactant oil phase, a predominant, aqueous continuous phase, a polar organic solvent coupling agent, and a combination of surfactants different from the surfactant oil phase as the dispersing agent facilitating formation of the microemulsion.Type: GrantFiled: August 9, 1996Date of Patent: December 29, 1998Assignee: The Clorox CompanyInventors: Robert L. Blum, Michael H. Robbins, Lynn M. Hearn, Shona L. Nelson
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Patent number: 5789361Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled metal surfaces such as food fryers, baking pans, high temperature pasteurizers, and beer kettles, ceramic surfaces such as restaurant grade ceramic china plates and platters, and plastic surfaces. The cleaning composition is noncaustic and includes a peroxygen compound, a chelate, and a metasilicate and/or sesquisilicate. A preferred cleaning composition further includes a surfactant and hydrated builder.Type: GrantFiled: March 1, 1996Date of Patent: August 4, 1998Assignee: Charvid Limited Liability Co.Inventor: Charles Bullick Talley
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Patent number: 5783538Abstract: A detergent composition comprising the following ingredients: an inorganic alkali salt, a water-insoluble organic solvent, an amine, a pyrrolidone compound, polyhydric alcohol, anionic surface active agent, and water.Type: GrantFiled: December 12, 1996Date of Patent: July 21, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Takatoshi Totoki
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Patent number: 5736500Abstract: Improved microemulsions having a lower level of solvent, a lower level of oil, a more robust formulation and/or exhibiting equivalent if not better performance on fatty soils can be obtained by simultaneous selection of specific surfactants, specific oils and specific solvents. When all three of these components are selected in the manner described herein, a synergistic benefit is attained. The present invention provides a liquid, aqueous cleaning composition in the form of a stable emulsion having a dispersed phase diameter of 10-100 nanometres comprising:a) at least 30 wt % water,b) at least l wt % but not more than 40 wt % of a surfactant system comprising at least one alkoxylated alcohol nonionic surfactant and not more than 10 wt % on alkoxylated alcohol nonionic surfactant of anionic surfactant,c) at least 2 wt % but not more than 20 wt % of a solvent having a solubility of less than 12% w/w in water, and,d) at least 0.Type: GrantFiled: March 29, 1995Date of Patent: April 7, 1998Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Donald Michael Farnworth, Alexander Martin
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Patent number: 5681399Abstract: A method is disclosed for removing smearing material or filth deposits from a coated surface by means of spraying an aqueous dispersion to form a gel-like film on the surface. The aqueous dispersion comprises a selected amount of highly absorbent and/or water-soluble polymers dispersed in water. The gel-like film is washed down with pressured water with smearing particulate material entrained therewith.Type: GrantFiled: October 11, 1995Date of Patent: October 28, 1997Assignee: Creor CorporationInventor: Ikuo Okano
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Patent number: 5679629Abstract: A detergent composition for hard surfaces is disclosed, which contains: (a) a mixture consisting of at least two compounds represented by formula (I), wherein s is an integer from 1 to 10, representing the number of moles of the ethylene oxide group, which are different in degree of polymerization, said mixture (a) satisfying relationship (1), wherein N.sub.t is the percent by weight of a compound having t mol of the oxyethylene group added based on the weight of mixture (a). The detergent composition has excellent detergency and foaming properties and is useful for removal of denatured oily dirt in the kitchen.Type: GrantFiled: July 27, 1995Date of Patent: October 21, 1997Assignee: Kao CorporationInventors: Masakazu Kubota, Norikazu Jin, Kazunori Tsukuda, Hiroshi Nagumo
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Patent number: 5663132Abstract: The present invention discloses an alkaline cleaning composition for cleaning heavily soiled surfaces such as food fryers, baking pans, high temperature pasteurizers, beer kettles and similar equipment that normally requires caustic soda based cleaners to clean. The present invention is also useful in cleaning ceramics such as restaurant grade ceramic china plates and platters. The present invention is particularly useful in cleaning brass and aluminum parts and equipment without causing corrosion damage. Further, since the cleaning composition of the present invention is not based on caustic soda, the composition is not considered hazardous. Further, the cleaning composition of the present invention dissolves readily in water, providing a solution that can be used in mechanical sprayers, soak-tanks and clean-in-place equipment. Also the cleaning composition may be effectively used at lower temperatures than caustic cleaning agents.Type: GrantFiled: March 1, 1995Date of Patent: September 2, 1997Assignee: Charvid Limited Liability CompanyInventor: Charles Bullick Talley
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Patent number: 5565419Abstract: A shear thickening oven cleaning composition having a viscosity at room temperature at a shear rate of 2 radians/second for 30 seconds of about 1 to about 110 Pa.s and a viscosity at room temperature at a shear rate of 10 radians/second for 30 seconds of about 2 to about 190 Pa.s which comprises by weight percent of about 5 to about 50 of an alkali metal silicate; about 0.1 to about 25 of a cyclic nitrogen containing compound; about 0.01 to about 4.0 of an alkanolamine; about 0 to 15 of at least one surfactant and the balance being water.Type: GrantFiled: February 24, 1995Date of Patent: October 15, 1996Assignee: Colgate Palmolive CompanyInventors: Barbara Thomas, Guy Broze, Andrea Motyka