Patents by Inventor Ulf Angsas

Ulf Angsas 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 of producing mechanical pulp and the mechanical pulp thus produced
    Publication number: 20050241785
    Abstract: A method of producing mechanical pulp, comprising impregnation of fiber material with an enzyme-containing aqueous liquid prior to defibration and refining of the fiber material to produce a mechanical pulp. According to the invention, said enzyme-containing aqueous liquid is a pectinase-containing aqueous liquid. The invention is also related to the mechanical pulp thus produced.
    Type: Application
    Filed: August 21, 2003
    Publication date: November 3, 2005
    Inventors: Frank Peng, Rita Ferritsius, Ulf Angsas