Patents by Inventor Otto Schroers
Otto Schroers 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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Publication number: 20140014588Abstract: The present invention relates to a method for dewatering of sludge, wherein an aqueous solution of polymeric flocculating agent is added to the sludge, wherein the sludge comprises a component to be removed by the flocculating agent being added to the sludge, wherein in order to limit the residual amount of the flocculating agent in a filtrate of the sludge the method comprises a first and/or a second step, wherein the first step comprises—measuring a first content information related to the total amount of solid material in the sludge (organic and inorganic)—measuring a second content information related to a sand material content in the sludge, wherein the first and second content information is used for controlling the addition of the aqueous solution of the polymeric flocculating agent to the sludge, wherein the second step comprises measuring a material information related to a material property of the filtrate, wherein the material information is used for controlling the content of the polymeric flocculType: ApplicationFiled: January 25, 2012Publication date: January 16, 2014Applicant: Ashland Licensing and Intellectual Property LLC.Inventors: Toine Koehorst, Otto Schroers
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Patent number: 7811458Abstract: The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer flocculants and the use of materials obtained according to the inventive method.Type: GrantFiled: June 4, 2009Date of Patent: October 12, 2010Assignees: Stockhausen GmbH & Co. KG, Detlef Hegeman GmbH & Co. KGInventors: Thorsten Buddenberg, Holger Herrmann, Hartmut Pawel, Otto Schroers, Wolfgang Hoeppner, Volker Hartmann
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Publication number: 20090236562Abstract: The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer flocculants and the use of materials obtained according to the inventive method.Type: ApplicationFiled: June 4, 2009Publication date: September 24, 2009Applicants: Stockhausen GmbH & Co., KG, Detlef Hegemann GmbH & Co KgInventors: Thorsten Buddenberg, Holger Herrmann, Hartmut Pawel, Otto Schroers, Wolfgang Hoeppner, Volker Hartmann
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Patent number: 7553423Abstract: The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer flocculants and the use of materials obtained according to the inventive method.Type: GrantFiled: May 28, 2004Date of Patent: June 30, 2009Assignees: Stockhausen GmbH & Co. KG, Detlef Hegemann GmbH & Co KGInventors: Thorsten Buddenberg, Holger Herrmann, Hartmut Pawel, Otto Schroers, Wolfgang Hoeppner, Volker Hartmann
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Patent number: 7323510Abstract: The invention relates to methods for manufacturing a water-in-water polymer dispersion containing polymer A and at least one polymer dispersant B, according to which monomers, which are dispersed in an aqueous phase containing water-soluble dispersant B, are subjected to radical polymerization, possibly following the addition of a water-soluble salt, and, after polymerisation, a water-soluble acid is added to the water-soluble and/or water-swellable polymer A obtained in this way, where the acid is added in quantities of 0.1 to 5% by weight and the salt in quantities of up to a maximum of 3% by weight, each referred to the total dispersion, and the total quantity of salt and acid amounts to a maximum of 5% by weight, referred to the total dispersion.Type: GrantFiled: December 1, 2001Date of Patent: January 29, 2008Assignee: Ashland Licensing and Intellectual Property LLCInventors: Ulrich Fischer, Otto Schroers, Wolfgang Woebel
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Publication number: 20070138106Abstract: The invention relates to a method for the accelerated dehydration of sludges in sludge disposal areas, especially of sludges from rivers and harbors, by the exclusive use of anionic polymer flocculants and the use of materials obtained according to the inventive method.Type: ApplicationFiled: May 28, 2004Publication date: June 21, 2007Applicants: STOCKHAUSEN GMBH & CO, Detlef Hegemann GMBH & Co. KgInventors: Thorsten Buddenberg, Holger Herrmann, Hartmut Pawel, Otto Schroers, Wolfgang Hoeppner, Volker Hartmann
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Publication number: 20040090625Abstract: The invention relates to a device for particle agglomeration, comprising a supply line carrying a fluid with a particle load, and a probe which is connected to the supply line. Data related to a parameter PT which is dominated by the particle size, and to a parameter PK which is dominated by the concentration of the particle load in the fluid, can be determined by means of said probe, via a measuring signal. The invention also relates to a method for controlling the agglomeration of particles and to the use of the inventive device or method for treating waste water.Type: ApplicationFiled: July 24, 2003Publication date: May 13, 2004Inventors: Ulrich Fischer, Otto Schroers, Benno Wessely
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Publication number: 20040034145Abstract: The invention relates to methods for manufacturing a water-in-water polymer dispersion containing polymer A and at least one polymeric dispersant B, according to which monomers, which are dispersed in an aqueous phase containing water-soluble dispersant B, are subjected to radical polymerisation, possibly following the addition of a water-soluble salt, and, after polymerisation, a water-soluble acid is added to the water-soluble and/or water-swellable polymer A obtained in this way, where the acid is added in quantities of 0.1 to 0.5% by weight and the salt in quantities of up to a maximum of 3% by weight, each referred to the total dispersion, and the total quantity of salt and acid amounts to a maximum of 5% by weight, referred to the total dispersion.Type: ApplicationFiled: June 6, 2003Publication date: February 19, 2004Inventors: Ulrich Fischer, Otto Schroers, Wolfgang Woebel
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Patent number: 4925884Abstract: The present invention relates to a process for the production of concentrated, water-soluble or water swellable emulsion polymers by the polymerization of at least one water-soluble monomer in a water-in-oil dispersion by means of polymerization initiators, preferably in presence of bi- or multi-function vinyl- or allyl compounds in which a water-in-oil dispersion of the starting monomers is polymerized while being stirred so that the heat of polymeriaation is eliminated by distillation removal of the water contained in the reaction mixture. The polymerisation temperature is preferably adjusted and controlled by means of the pressure in the system.Type: GrantFiled: February 13, 1987Date of Patent: May 15, 1990Assignee: Chemische Fabrik Stockhausen GmbHInventors: Wolfgang Hubner, Otto Schroers
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Patent number: 4786661Abstract: A process is disclosed for the rapid dissolution of water-soluble polymers in water, in that water in a finely divided state is introduced under pressure into the prepared finely divided polymer. The water-soluble polymer can be in the form of a water-in-oil emulsion or the form of a powder-in-oil suspension; the water is preferably introduced under pressure through a nozzle and tangentially to the surface of the prepared polymer.Type: GrantFiled: July 29, 1983Date of Patent: November 22, 1988Assignee: Chemische Fabrik Stockhausen GmbHInventors: Wolfgang Hubner, Helmut Klein, Erhard Goldacker, Otto Schroer
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Patent number: 4530943Abstract: A process is disclosed for the rapid dissolution of a water soluble polymer by mixing the polymer with water and using a hydrophilic wetting agent, wherein the water is introduced under normal mixing conditions into a prepared water-in-oil polymer dispersion that is free of wetting agent, the wetting agent being added after dilution of the prepared water-in-oil dispersion with water. It is preferred that the water be added under pressure through a nozzle.Type: GrantFiled: July 29, 1983Date of Patent: July 23, 1985Assignee: Chemische Fabrik Stockhausen GmbHInventors: Wolfgang Hubner, Helmut Klein, Erhard Goldacker, Otto Schroers
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Patent number: 4340525Abstract: An additive for deep-well cement slurries comprising a water-soluble anionic copolymer having a molecular weight from about 50,000 to 500,000 and comprising about 1 to 60 mole % of anionic structural units and about 99 to 40 mole % of nonanionic structural units. A preferred additive comprises a terpolymer of acrylamide, sodium acrylate and sodium vinylsulphonate. The additives retard the setting action of the slurry, stabilize the slurry, prevent the swelling of readily hydratable clays and are resistant to electrolytes which would accelerate setting and seepage of water from the slurry.Type: GrantFiled: March 19, 1981Date of Patent: July 20, 1982Assignee: Chemische Fabrik Stockhausen & CieInventors: Wolfgang Hubner, Otto Schroers, Hans J. Sladeck