Patents by Inventor Ananthasubramanian Sivakumar
Ananthasubramanian Sivakumar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7476394Abstract: A rinse off liquid or gel cleansing composition comprising a continuous phase comprising one or more detergent actives and a dispersed phase comprising one or more hydrophobic materials, the dispersed phase comprising a water soluble or dispersible benefit agent which is sensitive to a detergent active and/or high pH, which benefit agent is dispersed in the hydrophobic material.Type: GrantFiled: August 4, 2005Date of Patent: January 13, 2009Assignee: Conopco, Inc.Inventors: Nandini Sachin Dabholkar, Venkareswaran Krishnan, Pankaj Chandrakant Shah, Ananthasubramanian Sivakumar
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Publication number: 20060276365Abstract: A process for the manufacture of aerated solid shaped detergent compositions comprising the steps of: i) preparation of a melt of the detergent composition to be cast; ii) addition of fatty alcohol to the melt either prior to or after the air or gas has been incorporated into the melt; iii) mixing the melt in a high shear mixer; iv) pouring the melt into a mould; v) cooling the mould; vi) demoulding the solidified-shaped article. Preferably, the detergent composition comprises 20% to 60% by weight of detergent active, 0.1% to 10% by weight fatty alcohol and 30% to 60% by weight water and/or polyhydric alcohol.Type: ApplicationFiled: March 19, 2004Publication date: December 7, 2006Inventors: Subhash Mhatre, Ananthasubramanian Sivakumar
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Publication number: 20060030510Abstract: A rinse off liquid or gel cleansing composition comprising a continuous phase comprising one or more detergent actives and a dispersed phase comprising one or more hydrophobic materials, the dispersed phase comprising a water soluble or dispersible benefit agent which is sensitive to a detergent active and/or high pH, which benefit agent is dispersed in the hydrophobic material.Type: ApplicationFiled: August 4, 2005Publication date: February 9, 2006Inventors: Nandini Dabholkar, Venkareswaran Krishnan, Pankaj Shah, Ananthasubramanian Sivakumar
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Publication number: 20060003907Abstract: A water-in-oil emulsion system as a storage stable carrier of high pH sensitivity benefit agents or actives comprising i) an aqueous phase including at least one water soluble and/or dispersible benefit agent; ii) a hydrophobic protective carrier phase for the aqueous phase containing the benefit agent; and iii) an emulsifier or a dispersant. Also provided is a rinse off non-liquid cleansing composition comprising the water-in-oil emulsion system and a second phase which is a continuous alkaline phase.Type: ApplicationFiled: November 3, 2004Publication date: January 5, 2006Inventors: Venkateswaran Krishnan, Pankaj Shah, Ananthasubramanian Sivakumar
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Publication number: 20050159330Abstract: A cleansing composition capable of enhancing deposition of benefit agent comprising: iv. a functional oil-in-water emulsion comprising 0.1% to 5% by weight benefit agent solubilised/dispersed in an oil and emulsified in water using a cationic emulsifier having an HLB greater than 8 such that the ratio of oil:cationic emulsifier is in the range 20:1 to 1:1; v. a detergent active composition comprising 5% to 80% detergent active; and vi. a cationic polymer.Type: ApplicationFiled: January 14, 2005Publication date: July 21, 2005Inventors: Pankaj Shah, Ananthasubramanian Sivakumar
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Patent number: 6784267Abstract: A water-soluble, cationic polymer comprising from about 1 to about 65 mole percent of one or more cationic monomers, from about 99 to about 35 mole percent of one or more nonionic monomers and from about 1 to about 1000 ppm, based on the total monomer content, of one or more hyperbranched monomers wherein the hyperbranched monomer contains from about 2 to about 20 allyl, vinyl, or acrylic end groups and method of dewatering sludge is disclosed.Type: GrantFiled: July 25, 2002Date of Patent: August 31, 2004Assignee: Nalco CompanyInventors: William J. Ward, Ananthasubramanian Sivakumar
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Patent number: 6753388Abstract: This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred, and to use of the water-soluble cross-linked polymers as flocculating agents.Type: GrantFiled: July 17, 2003Date of Patent: June 22, 2004Assignee: Nalco CompanyInventors: Wesley L. Whipple, Chidambaram Maltesh, Cathy C. Johnson, Ananthasubramanian Sivakumar, Tracey M. Guddendorf, Angela P. Zagala
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Patent number: 6627719Abstract: A cationic latex terpolymer prepared by polymerizing from about 1 to about 99.1 mole percent of one or more cationic monomers, from about 0.9 to about 5 mole percent of one or more hydroxyalkyl (meth)acrylates and from 0 to about 98.1 mole percent of one or more nonionic monomers is useful for dewatering sludge.Type: GrantFiled: January 31, 2001Date of Patent: September 30, 2003Assignee: Ondeo Nalco CompanyInventors: Wesley L. Whipple, Ananthasubramanian Sivakumar, Jitendra Shah
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Patent number: 6605674Abstract: This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred, and to use of the water-soluble cross-linked polymers as flocculating agents.Type: GrantFiled: June 29, 2000Date of Patent: August 12, 2003Assignee: Ondeo Nalco CompanyInventors: Wesley L. Whipple, Chidambaram Maltesh, Cathy C. Johnson, Ananthasubramanian Sivakumar, Tracey M. Guddendorf, Angela P. Zagala
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Publication number: 20030060586Abstract: A cationic latex terpolymer prepared by polymerizing from about 1 to about 99.1 mole percent of one or more cationic monomers, from about 0.9 to about 5 mole percent of one or more hydroxyalkyl (meth)acrylates and from 0 to about 98.1 mole percent of one or more nonionic monomers is useful for dewatering sludge.Type: ApplicationFiled: January 31, 2001Publication date: March 27, 2003Inventors: Wesley L. Whipple, Ananthasubramanian Sivakumar, Jitendra Shah
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Patent number: 6369182Abstract: This invention is directed to a cationic terpolymer comprising (a) a first monomer unit selected from acrylamide and methacrylamide; (b) a second monomer unit selected from dimethylaminoethyl acrylate methyl chloride quaternary salt, 3-(acrylamido)propyltrimethylammonium chloride, 3-(methacrylamido)propyltrimethylammonium chloride, dimethylaminoethyl methacrylate methyl chloride quaternary salt, dimethylaminoethyl acrylate dimethylsulfate quaternary salt, dimethylaminoethyl methacrylate dimethylsulfate quaternary salt, diethylaminoethyl acrylate methyl chloride quaternary salt and diethylaminoethyl acrylate dimethylsulfate quaternary salt; and (c) a third monomer unit selected from benzyl methacrylate, 2,2,2-trifluoroethyl acrylate, acrylamide diacetone, N-phenylacrylamide, 2,2,3,3-tetrafluoropropyl acrylate and poly(propylene glycol)methacrylate. The terpolymer is useful for dewatering a variety of sludges.Type: GrantFiled: October 11, 1999Date of Patent: April 9, 2002Assignee: Nalco Chemical CompanyInventors: Wesley L. Whipple, Ananthasubramanian Sivakumar
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Patent number: 6365052Abstract: This invention is directed to a method of dewatering animal farm waste water comprising: (1) adding an effective amount of a cationic dispersion polymer having an RSV of at least 24, the dispersion polymer prepared by polymerizing under free radical forming conditions in an aqueous solution of a water-soluble salt in the presence of one or more particle stabilizing polymers (i) from about 20 to about 90 mole percent nonionic monomers and (ii) from about 10 to about 80 mole percent of cationic monomers wherein the cationic monomers are selected from at least one hydrophilic cationic monomer and at least one hydrophobic cationic monomer and wherein less than 50 percent of the cationic monomers on a molar basis are hydrophobic monomers, (2) mixing the waste water and the cationic dispersion polymer to form a mixture of water and flocculated solids and (3) separating the flocculated solids from the water.Type: GrantFiled: March 21, 2000Date of Patent: April 2, 2002Assignee: Nalco Chemical CompanyInventors: Ananthasubramanian Sivakumar, Cathy C. Johnson
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Patent number: 6294093Abstract: Demulsification of a water-in-oil, especially a water-in-crude oil, emulsion is effected by contacting it with an aqueous composition having at least one oil-soluble demulsifier and at least one water-soluble surfactant. These aqueous formulations are advantageous over conventional organic formulations of demulsifiers, as the need for toxic and/or flammable/combustible organic solvents is eliminated.Type: GrantFiled: September 4, 1998Date of Patent: September 25, 2001Assignee: Nalco/Exxon Energy Chemicals, L.P.Inventors: Radhakrishnan Selvarajan, Ananthasubramanian Sivakumar, Robert A. Marble
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Patent number: 6036868Abstract: A method for removing emulsified oil from industrial waste water streams utilizing dispersion copolymers is disclosed. Preferred dispersion copolymers are poly(dimethylaminoethylacrylate methyl chloride quaternary salt/acrylamide) and poly (diallyldimethyl ammonium chloride/acrylamide).Type: GrantFiled: July 23, 1998Date of Patent: March 14, 2000Assignee: Nalco Chemical CompanyInventors: Ananthasubramanian Sivakumar, Patrick Gerard Murray
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Patent number: 5702613Abstract: The invention provides a method of removing emulsified oil from an industrial wastewater stream. According to the method, a vinylamine polymer is added to the oil containing wastewater in a concentration of from about 0.1 to about 100 parts per million based on the total volume of the water being treated. The vinylamine polymer includes from about 1 to about 100 mole percent vinylamine and from about 1 to about 99 mole percent of at least 1 monomer selected from the group consisting of amidine, vinylformamide, vinyl alcohol, vinyl acetate, vinyl pyrrolidinone and the esters, amides, nitriles and salts of acrylic acid and methacrylic acid. The addition of the polymer to the oil containing wastewater causes the emulsified oil to flocculate. The flocculated oil is then removed from the wastewater.Type: GrantFiled: April 29, 1994Date of Patent: December 30, 1997Assignee: Nalco Chemical CompanyInventors: Anthony G. Sommese, Ananthasubramanian Sivakumar
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Patent number: 5679261Abstract: The invention is a method for clarifying waste water containing turbidity-causing components which comprises: adding to said water an effective turbidity-reducing amount of a water-soluble silicon-containing copolymer coagulant prepared from diallyldimethylammonium halide and a vinyltrialkoxysilane; mixing said copolymer and said water with a mechanical stirring device for sufficient time to allow flocculation of the turbidity-causing components; and then separating the flocculated turbidity-causing components from the waste water to obtain clarified water. Useful polymers for the practice of this invention are copolymers of diallyldimethylammonium halide and vinyltrialkoxysilane.Type: GrantFiled: September 23, 1996Date of Patent: October 21, 1997Assignee: Nalco Chemical CompanyInventors: Ananthasubramanian Sivakumar, Manian Ramesh
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Patent number: 5645799Abstract: The invention comprises an apparatus for optimizing the dosage of a chemical waste water treatment agent using a fluorescent tracer by processing a sample of the waste water stream and allowing continuous on-stream monitoring of the performance of the chemical waste water treatment agent. The apparatus is comprised of a series of components that sample the waste stream, process the sample for analysis, analyze the sample, record the data in a historical database and, based upon the analysis as compared to historical data, adjust the chemical feed system to optimize the chemical waste water treatment agent according to the programmed optimization logic.Type: GrantFiled: November 2, 1995Date of Patent: July 8, 1997Assignee: Nalco Chemical CompanyInventors: Jitendra T. Shah, Ananthasubramanian Sivakumar, David W. Scheimann
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Patent number: 5635112Abstract: A method for breaking an oil-in-water emulsion which comprises the addition of a hydrophobically-modified polyelectrolyte copolymer comprising a diallyldimethylammonium chloride and a hydrophobically-associating monomer selected from the group consisting of quaternized dialkylaminoalkylacrylates, quaternized dialkylaminoalkylmethacrylates, and alkyl esters of (meth)acrylic acids, preferably ethylhexylacrylate, to the emulsion.Type: GrantFiled: July 26, 1995Date of Patent: June 3, 1997Assignee: Nalco Chemical CompanyInventors: Manian Ramesh, Ananthasubramanian Sivakumar
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Patent number: 5589075Abstract: The invention is a process for removing color from a paper mill waste effluent containing color bodies which comprises: treating the waste effluent containing color bodies with an effective color-removing amount of a water-soluble silicon-containing copolymer coagulant prepared from diallyldimethylammonium halide and a vinyltrialkoxysilane; coagulating the color bodies present in the waste effluent; and then removing the coagulated color bodies from the waste effluent.Type: GrantFiled: November 30, 1995Date of Patent: December 31, 1996Assignee: Nalco Chemical CompanyInventors: Ananthasubramanian Sivakumar, John H. Collins, Manian Ramesh
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Patent number: 5560832Abstract: A method of removing waste oil from industrial oily waste water is disclosed. The method comprises the steps of adding to the oily waste water which includes oil, dispersed solids and emulsified water, an effective amount of a demulsifier which comprises a copolymer of a cationic monomer and a vinyl alkoxysilane; allowing the oil, emulsified water and dispersed solids to flocculate and separate into layers; and then removing the water layer from the treated waste water. The cationic monomer is selected from the group consisting diallyldimethylammonium halide, dimethylaminoethyl acrylate quaternary salt and dimethylaminoethyl methacrylate quaternary salt.Type: GrantFiled: May 8, 1995Date of Patent: October 1, 1996Assignee: Nalco Chemical CompanyInventors: Ananthasubramanian Sivakumar, Manian Ramesh