Patents by Inventor Magnus Olof Linsten

Magnus Olof Linsten 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).

  • Process for the production of paper using silica-based sols
    Patent number: 6893538
    Abstract: The invention relates to an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: May 17, 2005
    Assignee: Akzo Nobel N.V.
    Inventors: Peter Greenwood, Magnus Olof Linsten, Hans E. Johansson-Vestin
  • Silica-based sols
    Publication number: 20030066617
    Abstract: The invention relates to an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification.
    Type: Application
    Filed: September 23, 2002
    Publication date: April 10, 2003
    Inventors: Peter Greenwood, Magnus Olof Linsten, Hans E Johansson-Vestin
  • 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
  • Silica-based sols
    Patent number: 6379500
    Abstract: An aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: April 30, 2002
    Assignee: Akzo Nobel NV
    Inventors: Peter Greenwood, Magnus Olof Linsten, Hans E. Johansson-Vestin
  • Silica-based sols
    Publication number: 20010004927
    Abstract: The invention relates to an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 28, 2001
    Inventors: Peter Greenwood, Magnus Olof Linsten, Hans E. Johansson-Vestin