Patents by Inventor Lars Ingemar Gillberg

Lars Ingemar Gillberg 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).

  • Sizing composition and a method of sizing
    Patent number: 6436181
    Abstract: A sizing composition and a method of sizing a cellulosic fiber material are disclosed. The sizing composition comprises an aqueous dispersion of a rosin material and a polyaluminium compound, and is characterised in that the polyaluminium compound is a polyaluminium phosphate sulphate compound. The polyaluminium phosphate sulphate compound should comprise at least 5% by weight, calculated as aluminium on the amount of rosin material in the composition. It is preferred that the sizing composition also comprises a synthetic sizing agent in addition to the rosin material. The dispersion preferably also includes a dispersing agent and has a dry content of at least 1% by weight. The sizing composition is used for the sizing of cellulosic fibre materials, such as paper, board or paper board by adding 0.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: August 20, 2002
    Assignee: Kemira Kemi AB
    Inventors: Lars Ingemar Gillberg, Josep Lluis Bisbal Tudela