Patents by Inventor Paul Kleijn

Paul Kleijn 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).

  • Method for producing superabsorbing polymers
    Patent number: 7572840
    Abstract: The present invention relates to a method for manufacturing super-absorbent polymers, comprising providing a reaction mixture which comprises at least a first monomer and a second monomer and a radical-forming polymerization initiator, and subsequently causing the monomers to polymerize under the influence of an energy source, wherein radical formation occurs and the polymerization is started, wherein the first monomer is neutralized with an inorganic base before polymerization, in addition to the manufactured super-absorbent polymers. The invention further relates to a method for applying a coating of super-absorbent polymers to a carrier.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: August 11, 2009
    Assignee: Vepetex B.V.
    Inventors: Paul Kleijn, Herman Reezigt
  • Method for producing superabsorbing polymers
    Publication number: 20050143482
    Abstract: The present invention relates to a method for manufacturing super-absorbent polymers, comprising providing a reaction mixture which comprises at least a first monomer and a second monomer and a radical-forming polymerization initiator, and subsequently causing the monomers to polymerize under the influence of an energy source, wherein radical formation occurs and the polymerization is started, wherein the first monomer is neutralized with an inorganic base before polymerization, in addition to the manufactured super-absorbent polymers. The invention further relates to a method for applying a coating of super-absorbent polymers to a carrier.
    Type: Application
    Filed: October 5, 2004
    Publication date: June 30, 2005
    Applicant: VEPETEX B.V.
    Inventors: Paul Kleijn, Herman Reezigt