Patents Represented by Attorney David J. Serbin
  • Patent number: 7597804
    Abstract: 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: Grant
    Filed: June 28, 2004
    Date of Patent: October 6, 2009
    Assignee: EKA Chemicals
    Inventors: Raphaël Duval, Hubert Leveque
  • Patent number: 7576034
    Abstract: 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: Grant
    Filed: September 23, 2002
    Date of Patent: August 18, 2009
    Assignee: Eka Chemicals AB
    Inventors: Raphaël Duval, Hubert Leveque
  • Patent number: 7566389
    Abstract: 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: Grant
    Filed: October 8, 2004
    Date of Patent: July 28, 2009
    Assignee: Akzo Nobel N.V.
    Inventors: Takayuki Shimamune, Erik Zimmerman, Christer Andreasson
  • Patent number: 7553888
    Abstract: 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: Grant
    Filed: October 14, 2003
    Date of Patent: June 30, 2009
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Hans Lagnemo
  • Patent number: 7544726
    Abstract: 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: Grant
    Filed: October 14, 2003
    Date of Patent: June 9, 2009
    Assignee: Akzo Nobel N.V.
    Inventor: Peter Greenwood
  • Patent number: 7459005
    Abstract: 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: Grant
    Filed: November 22, 2002
    Date of Patent: December 2, 2008
    Assignee: Akzo Nobel N.V.
    Inventors: David C. Lovetro, David J. Bonislawski, Laural C. Webb
  • Patent number: 7413658
    Abstract: 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: Grant
    Filed: November 22, 2004
    Date of Patent: August 19, 2008
    Assignee: Akzo Nobel N.V.
    Inventors: Sylvia Winkel Pettersson, Borje Persson, Mats Nystrom
  • Patent number: 7332065
    Abstract: 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: Grant
    Filed: June 14, 2004
    Date of Patent: February 19, 2008
    Assignee: Akzo Nobel N.V.
    Inventor: Takayuki Shimamune
  • Patent number: 7311848
    Abstract: 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: Grant
    Filed: November 15, 2004
    Date of Patent: December 25, 2007
    Assignee: AKZO Nobel N. V.
    Inventors: Matthew Rice, Hans Wijk
  • Patent number: 6841288
    Abstract: 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: Grant
    Filed: December 21, 2000
    Date of Patent: January 11, 2005
    Assignee: Akzo Nobel N.V.
    Inventors: Bo Håkansson, Eduardo Fontes, Magnus Davidsson, Hans-Göran Sundström, Lars Blomgren, Arne Carlsson
  • Patent number: 6821575
    Abstract: 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: Grant
    Filed: December 18, 2001
    Date of Patent: November 23, 2004
    Assignee: Advanced Photonics Technologies AG
    Inventors: Takayuki Shimamune, Bernd Busse, Erik Zimmerman, Lars-Erik Bergman
  • Patent number: 6821636
    Abstract: 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: Grant
    Filed: March 11, 2002
    Date of Patent: November 23, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Robin Ljungar, Ingvar Lindh, Salme Pirhonen
  • Patent number: 6800130
    Abstract: 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: Grant
    Filed: February 3, 2003
    Date of Patent: October 5, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Hans Bergqvist, Ulf Skarp
  • Patent number: 6797136
    Abstract: 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: Grant
    Filed: September 4, 2002
    Date of Patent: September 28, 2004
    Assignee: Akzo Nobel N.V.
    Inventor: Takayuki Shimamune
  • Patent number: 6790427
    Abstract: 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: Grant
    Filed: June 25, 2001
    Date of Patent: September 14, 2004
    Assignee: Eka Chemicals, Inc.
    Inventors: Gary Charles, Michael Burke
  • Patent number: 6787497
    Abstract: 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: Grant
    Filed: September 28, 2001
    Date of Patent: September 7, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Anna-Carin Dellve, Bozena Tokarz, Mats Nyström
  • Patent number: 6749949
    Abstract: 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: Grant
    Filed: March 11, 2002
    Date of Patent: June 15, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Robin Ljungar, Ingvar Lindh, Salme Pirhonen
  • Patent number: 6734275
    Abstract: 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: Grant
    Filed: October 18, 2002
    Date of Patent: May 11, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Salme Pirhonen, Benyahia Nasli-Bakir, Ingvar Lindh
  • Patent number: 6653392
    Abstract: 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: Grant
    Filed: March 20, 2001
    Date of Patent: November 25, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Benyahia Nasli-Bakir, Stefan Lindberg
  • Patent number: 6653264
    Abstract: 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: Grant
    Filed: December 18, 2001
    Date of Patent: November 25, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Carl-Erik Sundman, Pia Hellström, Pär Nilsson