Patents by Inventor Tony Whittaker
Tony Whittaker 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: 8088288Abstract: A process of dewatering an aqueous suspension comprising treating the suspension with a dewatering amount of a reverse phase polymer, and subjecting the suspension to a mechanical dewatering to form a cake, characterized in that the reverse phase polymer only partially inverts to bring about flocculation and thickening of the suspension, and then fully inverts during the further dewatering to form a cake.Type: GrantFiled: June 7, 2010Date of Patent: January 3, 2012Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventors: Tony Whittaker, Peter Norman, Darryl Smith
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Publication number: 20100237020Abstract: A process of dewatering an aqueous suspension comprising treating the suspension with a dewatering amount of a reverse phase polymer, and subjecting the suspension to a mechanical dewatering to form a cake, characterised in that the reverse phase polymer only partially inverts to bring about flocculation and thickening of the suspension, and then fully inverts during the further dewatering to form a cake.Type: ApplicationFiled: June 7, 2010Publication date: September 23, 2010Inventors: TONY WHITTAKER, Peter NORMAN, Darryl SMITH
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Patent number: 7754087Abstract: A process of dewatering aqueous suspension employing a flocculating system comprising treating the suspension with a flocculating amount of a first flocculant and a dewatering amount of a second flocculant, and subjecting the suspension to mechanical dewatering to form a cake, wherein the first flocculant brings about flocculation and assists thickening of the suspension and the second flocculant is a water-soluble or water swellable polymer that is mixed into the suspension is a water-soluble or water swellable particulate polymer having a particle diameter of at least 20 microns.Type: GrantFiled: February 28, 2005Date of Patent: July 13, 2010Assignee: Ciba Specialty Chemicals Water Treatments, LTDInventors: Tony Whittaker, Peter Norman, Darryl Smith
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Patent number: 7754086Abstract: A process of dewatering an aqueous suspension comprising dosing the suspension with a flocculating amount of a first flocculant to form a thickened suspension and mixing into the thickened suspension a dewatering amount of a second flocculant and subjecting the thickened suspension to mechanical dewatering to form a cake, characterised in that the second flocculant comprises a water-soluble or water swellable polymer that is mixed into the suspension in the form of (i) substantially dry polymer particles or (ii) an aqueous composition comprising dissolved or hydrated polymer having a polymer concentration of at least 2% by weight and having a intrinsic viscosity of at least 3 dl/g.Type: GrantFiled: February 28, 2005Date of Patent: July 13, 2010Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventors: Tony Whittaker, Peter Norman, Darryl Smith
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Patent number: 7754088Abstract: A process of dewatering an aqueous suspension comprising treating the suspension with a dewatering amount of a reverse phase polymer, and subjecting the suspension to a mechanical dewatering to form a cake, characterised in that the reverse phase polymer only partially inverts to bring about flocculation and thickening of the suspension, and then fully inverts during the further dewatering to form a cake.Type: GrantFiled: February 28, 2005Date of Patent: July 13, 2010Assignee: Ciba Specialty Chemicals Water Treatments LTD.Inventors: Tony Whittaker, Peter Norman, Darryl Smith
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Patent number: 7749392Abstract: A process of dewatering an aqueous suspension employing a flocculating system comprising treating the suspension with a flocculating amount of a first flocculant and a dewatering amount of a second flocculant, and subjecting the suspension to mechanical dewatering to form a cake, wherein the first flocculant brings about flocculation and assists thickening of the suspension and the second flocculant further dewaters the suspension, characterized in that the second flocculant is a water-soluble or water swellable polymer that is mixed into the suspension in the form of aqueous composition comprising dissolved or hydrated polymer having a Brookfield viscosity of above 30,000 cps (measured at 20° C.).Type: GrantFiled: February 28, 2005Date of Patent: July 6, 2010Assignee: Ciba Specialty Chemicals Water Treatments LtdInventors: Tony Whittaker, Peter Norman, Darryl Smith
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Publication number: 20070187331Abstract: A process of dewatering an aqueous suspension employing a flocculating system comprising treating the suspension with a flocculating amount of a first flocculant and a dewatering amount of a second flocculant, and subjecting the suspension to mechanical dewatering to form a cake, wherein the first flocculant brings about flocculation and assists thickening of the suspension and the second flocculant further dewaters the suspension, characterized in that the second flocculant is a water-soluble or water swellable polymer that is mixed into the suspension in the form of aqueous composition comprising dissolved or hydrated polymer having a Brookfield viscosity of above 30,000 cps (measured at 20° C.).Type: ApplicationFiled: February 28, 2005Publication date: August 16, 2007Inventors: Tony Whittaker, Peter Norman, Darryl Smith
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Publication number: 20070187333Abstract: A process of dewatering aqueous suspension employing a flocculating system comprising treating the suspension with a flocculating amount of a first flocculant and a dewatering amount of a second flocculant, and subjecting the suspension to mechanical dewatering to form a cake, wherein the first flocculant brings about flocculation and assists thickening of the suspension and the second flocculant is a water-soluble or water swellable polymer that is mixed into the suspension is a water-soluble or water swellable particulate polymer having a particle diameter of at least 20 microns.Type: ApplicationFiled: February 28, 2005Publication date: August 16, 2007Inventors: Tony Whittaker, Peter Norman, Darryl Smith
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Publication number: 20070187330Abstract: A process of dewatering an aqueous suspension comprising dosing the suspension with a flocculating amount of a first flocculant to form a thickened suspension and mixing into the thickened suspension a dewatering amount of a second flocculant and subjecting the thickened suspension to mechanical dewatering to form a cake, characterised in that the second flocculant comprises a water-soluble or water swellable polymer that is mixed into the suspension in the form of (i) substantially dry polymer particles or (ii) an aqueous composition comprising dissolved or hydrated polymer having a polymer concentration of at least 2% by weight and having a intrinsic viscosity of at least 3 dl/g.Type: ApplicationFiled: February 28, 2005Publication date: August 16, 2007Inventors: Tony Whittaker, Peter Norman, Darryl Smith
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Publication number: 20070187332Abstract: A process of dewatering an aqueous suspension comprising treating the suspension with a dewatering amount of a reverse phase polymer, and subjecting the suspension to a mechanical dewatering to form a cake, characterised in that the reverse phase polymer only partially inverts to bring about flocculation and thickening of the suspension, and then fully inverts during the further dewatering to form a cake.Type: ApplicationFiled: February 28, 2005Publication date: August 16, 2007Inventors: Tony Whittaker, Peter Norman, Darryl Smith
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Patent number: 7070696Abstract: A process of flocculating and dewatering an aqueous suspension of suspended solids comprising, introducing into the suspension, (a) substantially linear polymer, (b) structured polymer, characterised in that the polymers are introduced into the substrate sequentially. The process brings about improvements in filtration.Type: GrantFiled: March 22, 2002Date of Patent: July 4, 2006Assignee: Ciba Specialty Chemicals Water Treatments Ltd.Inventors: Steven Weir, Michael Green, John Stephen Robinson, Tony Whittaker, Malcolm Skinner
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Publication number: 20040124154Abstract: A process of flocculating and dewatering an aqueous suspension of suspended solids comprising, introducing into the suspension, (a) substantially linear polymer, (b) structured polymer, characterised in that the polymers are introduced into the substrate sequentially. The process brings about improvements in filtration.Type: ApplicationFiled: January 29, 2004Publication date: July 1, 2004Inventors: Steven Weir, Michael Green, John Stephen Robinson, Tony Whittaker, Malcolm Skinner
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Patent number: 4759856Abstract: A cross linked high molecular weight polymer formed from a water soluble monomer or blend of monomers and which has IV and/or solubility and/or rheology properties indicating that it would be unsuitable for use as a flocculant can be used as a flocculant after shearing the polymeric material. The shearing may be applied to the polymeric material before addition to the suspension that is to be flocculated or can be applied to the suspensionthat is being flocculated. The shearing increases the intrinsic viscosity of the polymeric material and can improve its rheology and solubility. The polymeric material must be of high molecular weight.Type: GrantFiled: April 23, 1986Date of Patent: July 26, 1988Assignee: Allied Colloids, Ltd.Inventors: David Farrar, John R. Field, Peter Flesher, Tony Whittaker
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Patent number: 4705640Abstract: The flocculation performance, for instance on low pressure or other pressure filtration (such as a belt press), of a solution of a high molecular weight organic polymeric flocculant having IV above 4 is improved by subjecting the solution to degradation, preferably by mechanical shear such as through a Silverson mixer or by a fast rotating blade.Type: GrantFiled: April 30, 1985Date of Patent: November 10, 1987Assignee: Allied Colloids LimitedInventor: Tony Whittaker