Patents by Inventor Kenneth Olof Larsson

Kenneth Olof Larsson 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).

  • Coated silica particles and method for production thereof
    Publication number: 20030118824
    Abstract: The present invention relates to a method for preparing cerium oxide coated silica particles and cerium oxide silica particles obtainable by the method. The invention further relates to cerium oxide coated silica particles and the use thereof for polishing.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 26, 2003
    Inventors: Bozena Stanislawa Tokarz, Kenneth Olof Larsson
  • Method for manufacturing of silica sols
    Patent number: 6500870
    Abstract: A method for production of high purity silica sols comprising the steps: (a) adding a phosphonic acid-based complexing agent to the silicic acid-containing solution forming complexes with metal cations present in said solution; (b) forming in said silicic acid-containing solution a precipitation containing phosphonic acid-based complexing agent and metal cations; (c) removing the precipitation from the solution; and, (d) polymerising the silicic acid in the solution to obtain a silica sol. The invention also relates to silica sols containing at least one phosphonic acid-based complexing agent.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: December 31, 2002
    Assignee: Akzo Nobel N.V.
    Inventors: Magnus Olof Linsten, Bozena Stanislawa Tokarz, Kenneth Olof Larsson