Patents Represented by Attorney David J. Serbin
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Patent number: 7597804Abstract: This invention relates to optically active support materials which include one or more esters and/or one or more carbamates and/or one or more mixed ester and carbamate compounds of polysaccharide or oligosaccharide, and an organic and/or inorganic substrate.Type: GrantFiled: June 28, 2004Date of Patent: October 6, 2009Assignee: EKA ChemicalsInventors: Raphaël Duval, Hubert Leveque
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Patent number: 7576034Abstract: The invention concerns a crosslinked optically active three-dimensional polymer network, consisting of homochiral units of a first selector and of homochiral units of at least a second selector of different structure from the first selector, the homochiral units of the first selector comprising at least three polymerisable or crosslinkable functional groups and the homochiral units of the second selector comprising at least two polymerisable or crosslinkable functional groups, the homochiral groups being chemically mutually bound. The invention also concerns a method for making such a polymer network and its uses.Type: GrantFiled: September 23, 2002Date of Patent: August 18, 2009Assignee: Eka Chemicals ABInventors: Raphaël Duval, Hubert Leveque
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Patent number: 7566389Abstract: The present invention relates to a method of preparing an electrode comprising providing an electrode substrate, depositing on said electrode substrate a first substantially aqueous coating solution comprising precursors of a valve metal oxide and of at least two platinum group metal oxides, treating the first coating solution to provide a first metal oxide coating layer on the electrode substrate, depositing on said first coating layer a second substantially organic coating solution comprising precursors of a valve metal oxide and at least one platinum group metal oxide, wherein at least one of the precursors is in organic form, treating said second coating solution to provide a second metal oxide coating layer on the first coating layer. The invention also relates to an electrode obtainable by said method, and the use thereof.Type: GrantFiled: October 8, 2004Date of Patent: July 28, 2009Assignee: Akzo Nobel N.V.Inventors: Takayuki Shimamune, Erik Zimmerman, Christer Andreasson
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Patent number: 7553888Abstract: The invention relates to a method of producing an aqueous dispersion comprising mixing at least one silane compound and colloidal silica particles to form silanized colloidal silica particles, mixing said silanized colloidal silica particles with an organic binder to form the dispersion. The invention also relates to a dispersion obtainable by the method, and the use thereof.Type: GrantFiled: October 14, 2003Date of Patent: June 30, 2009Assignee: Akzo Nobel N.V.Inventors: Peter Greenwood, Hans Lagnemo
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Patent number: 7544726Abstract: The invention relates to a method of producing a stable substantially aqueous silanized colloidal silica dispersion having a silica content of at least about 20 wt %, comprising mixing at least one silane compound and colloidal silica particles, wherein the weight ratio of silane to silica is from about 0.003 to about 0.2. The invention also relates to a dispersion obtainable by the method, and to a stable substantially aqueous silanized colloidal silica dispersion having a silica content of at least about 20 wt %, wherein the weight ratio of silane to silica is from about 0.003 to about 0.2. The invention further concerns the use of the dispersion for coatings applications and as an additive.Type: GrantFiled: October 14, 2003Date of Patent: June 9, 2009Assignee: Akzo Nobel N.V.Inventor: Peter Greenwood
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Patent number: 7459005Abstract: The invention relates to an aqueous solution consisting essentially of: (a) hydrogen peroxide; (b) at least one compound selected from the group consisting of complexing agents based on phosphonic acids, salts and degradation products thereof in an amount from about 10 to about 60 wt % based on the amount of hydrogen peroxide; (c) water; and (d) components other than (a) through (c) in an amount from 0 up to about 10 wt % based on the amount of hydrogen peroxide The invention further concerns a soil oxygenation or micronutrient composition comprising hydrogen peroxide, a process for its preparation, and a process for the oxygenation of soil.Type: GrantFiled: November 22, 2002Date of Patent: December 2, 2008Assignee: Akzo Nobel N.V.Inventors: David C. Lovetro, David J. Bonislawski, Laural C. Webb
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Patent number: 7413658Abstract: The present invention relates to a method for separating products from a mixture by reversed phase high performance liquid chromatography using a column packed with a stationary phase which is hydrophobic and a mobile phase, wherein the loading step, during which the products to be separated are introduced in the column, is carried out with an aqueous phase while applying an overpressure of at least about 0.3 MPa.Type: GrantFiled: November 22, 2004Date of Patent: August 19, 2008Assignee: Akzo Nobel N.V.Inventors: Sylvia Winkel Pettersson, Borje Persson, Mats Nystrom
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Patent number: 7332065Abstract: The present invention relates to a process for manufacturing an electrode comprising depositing on an electrode substrate a binder dispersion comprising a precursor of a conductive or semiconductive oxide, forming a conductive or semiconductive oxide coating from the precursor on the electrode substrate, depositing an electroconductive titanium oxide and electrode particles on the conductive or semiconductive oxide coating, adhering the electroconductive titanium oxide and the electrode particles to the formed conductive or semiconductive oxide coating. The invention also relates to an electrode obtainable by the process, and the use thereof in an electrolytic cell.Type: GrantFiled: June 14, 2004Date of Patent: February 19, 2008Assignee: Akzo Nobel N.V.Inventor: Takayuki Shimamune
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Patent number: 7311848Abstract: The present invention relates to a method of monitoring a liquid fluid mixture and a system carrying out the method. The invention also relates to the use of the system for monitoring liquid fluid mixtures.Type: GrantFiled: November 15, 2004Date of Patent: December 25, 2007Assignee: AKZO Nobel N. V.Inventors: Matthew Rice, Hans Wijk
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Patent number: 6841288Abstract: The invention relates to a construction for ventilation of hydrogen gas comprising at least a first metallic layer (1), sensitive to hydrogen embrittlement, a second (2) metallic layer, and a mesh (4), wherein the first layer (1) is joined to the second layer (2), and said mesh (4), forming venting channels (5) through which channels (5) hydrogen can be vented, is joined to, and in between, said first (1) and second (2) metallic layers. The invention further concerns a method for production thereof.Type: GrantFiled: December 21, 2000Date of Patent: January 11, 2005Assignee: Akzo Nobel N.V.Inventors: Bo Håkansson, Eduardo Fontes, Magnus Davidsson, Hans-Göran Sundström, Lars Blomgren, Arne Carlsson
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Patent number: 6821575Abstract: The invention relates to a method for preparing a conductive electrode comprising applying a precursor for electrocatalytic or protective coatings on a conductive electrode substrate, irradiating the conductive electrode substrate and the precursor with near infrared (NIR) radiation to form an electrocatalytic or protective coating on the electrode substrate. The invention also relates to an electrode substrate or electrode obtainable by the method, and the use thereof.Type: GrantFiled: December 18, 2001Date of Patent: November 23, 2004Assignee: Advanced Photonics Technologies AGInventors: Takayuki Shimamune, Bernd Busse, Erik Zimmerman, Lars-Erik Bergman
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Patent number: 6821636Abstract: A method of producing formaldehyde laden layered products, the products having reduced emission of formaldehyde, of at least 2 layers, at least one of the layers being a veneer, comprising a step of treating at least one of the surfaces of said veneer, prior to bonding the layers together, with a solution comprising an ammonium salt. The invention also relates to a flooring material obtained by the method.Type: GrantFiled: March 11, 2002Date of Patent: November 23, 2004Assignee: Akzo Nobel N.V.Inventors: Robin Ljungar, Ingvar Lindh, Salme Pirhonen
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Patent number: 6800130Abstract: The invention relates to a construction material comprising a hydraulic binder, water, and an aluminum-modified colloidal silica. The invention also relates to a method for preparing such materials and the use thereof.Type: GrantFiled: February 3, 2003Date of Patent: October 5, 2004Assignee: Akzo Nobel N.V.Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
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Patent number: 6797136Abstract: The present invention relates to a retrofitted electrolytic cell and a method for retrofitting an electrolytic cell comprising an anode and a cathode compartment, a separator partitioning the compartments, said cathode compartment comprising a hydrogen evolving cathode. The method comprises making at least one substantially horizontal slit in the hydrogen evolving cathode resulting in plural cathode members, bending the edge of at least one cathode member at the slit away from the separator, arranging a gas diffusion electrode to the cathode members on the side facing the separator, and arranging an electrolyte layer to the gas diffusion electrode. The invention also relates to the use of a retrofitted electrolytic cell.Type: GrantFiled: September 4, 2002Date of Patent: September 28, 2004Assignee: Akzo Nobel N.V.Inventor: Takayuki Shimamune
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Patent number: 6790427Abstract: The invention concerns a process and an apparatus for continuously producing chlorine dioxide, the process comprising the steps of feeding chlorate ions, acid and hydrogen peroxide as aqueous solutions to a reactor; reducing chlorate ions in the reactor to chlorine dioxide, thereby forming a product stream in the reactor containing chlorine dioxide; feeding motive water to an conductor comprising a nozzle; bringing the motive water to flow through the nozzle and causing it to flow further through the eductor in an at least partially spiral or helical manner, transferring the product stream from the reactor to the eductor and mixing it with the motive water and thereby forming a diluted aqueous solution containing chlorine dioxide, and; withdrawing the diluted aqueous solution containing chlorine dioxide from the eductor.Type: GrantFiled: June 25, 2001Date of Patent: September 14, 2004Assignee: Eka Chemicals, Inc.Inventors: Gary Charles, Michael Burke
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Patent number: 6787497Abstract: The invention concerns a catalyst carrier comprising a fibre paper impregnated with a slurry comprising silica sol, micro fibres and a filler, wherein said micro fibres have an equivalent average particle size, measured with sedigraph method, from about 200 nm to about 30000 nm and said filler has an average equivalent particle size, measured with sedigraph method, from about 300 to about 10000 nm. The invention further concerns a method of its preparation, a slurry useful therefore, a catalyst comprising such a catalyst carrier and use of the catalyst.Type: GrantFiled: September 28, 2001Date of Patent: September 7, 2004Assignee: Akzo Nobel N.V.Inventors: Anna-Carin Dellve, Bozena Tokarz, Mats Nyström
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Patent number: 6749949Abstract: A method of producing formaldehyde laden layered products, the products having reduced emission of formaldehyde, of at least 2 layers, at least one of the layers being a board or veneer, comprising a step of treating at least one of the surfaces of said board or veneer, prior to bonding the layers together, with a solution comprising an inorganic sulphur containing salt. The invention also relates to a flooring material obtained by the method.Type: GrantFiled: March 11, 2002Date of Patent: June 15, 2004Assignee: Akzo Nobel N.V.Inventors: Robin Ljungar, Ingvar Lindh, Salme Pirhonen
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Patent number: 6734275Abstract: The present invention relates to a method of gluing wood based materials by providing an adhesive system onto wood based materials followed by curing, the adhesive system comprises a urea based amino resin and a hardener composition, wherein the hardener composition comprises an acid and a phenolic resin. The invention also relates to an adhesive system and a hardener composition as well as wood based products obtained by the method or through the use of the adhesive system.Type: GrantFiled: October 18, 2002Date of Patent: May 11, 2004Assignee: Akzo Nobel N.V.Inventors: Salme Pirhonen, Benyahia Nasli-Bakir, Ingvar Lindh
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Patent number: 6653392Abstract: The invention relates to an adhesive system comprising (a) an etherified amino resin, (b) a polymer prepared from one or more ethylenically unsaturated monomers, (c) a curing agent, and (d) a polyvinyl alcohol and the use thereof for gluing wood based products. The invention also relates to a hardener composition for gluing systems of the amino resin type comprising, (b) a polymer prepared from one or more ethylenically unsaturated monomers, said polymer containing post-crosslinking groups, (c) a carboxylic acid and (d) a polyvinyl alcohol and the use thereof for formulating an adhesive system. The invention further relates to a method of application of the adhesive system or the hardener composition onto the surface to be glued.Type: GrantFiled: March 20, 2001Date of Patent: November 25, 2003Assignee: Akzo Nobel N.V.Inventors: Benyahia Nasli-Bakir, Stefan Lindberg
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Patent number: 6653264Abstract: The invention relates to a method for surface treatment of board based on biological fibrous material comprising a step of contacting the surface of said board based on biological fibrous material with an aqueous solution containing hydrogen peroxide. The invention further concerns a composition suitable such treatment.Type: GrantFiled: December 18, 2001Date of Patent: November 25, 2003Assignee: Akzo Nobel N.V.Inventors: Carl-Erik Sundman, Pia Hellström, Pär Nilsson