Patents by Inventor Anders Bergvist

Anders Bergvist 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 bleaching pulp with adsorption of metals
    Patent number: 5462641
    Abstract: A process for bleaching pulp, in which, after fiber liberation, a first filtrate containing metals, principally in ionic form, is separated off from the pulp, and supplied downstream to the pulp flow after a bleaching stage.
    Type: Grant
    Filed: July 7, 1993
    Date of Patent: October 31, 1995
    Assignee: Kamyr Atkiebolag
    Inventors: Anders Bergvist, Hakan Dahllof