Patents by Inventor Steve Moldenius

Steve Moldenius 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 two-stage peroxide bleaching of mechanical or semi-mechanical pulp
    Patent number: 4734160
    Abstract: A method of peroxide bleaching lignocellulose-containing material for providing a pulp of both high strength and brightness. Increase in strength is provided in a first stage by hyper-alkaline peroxide bleaching known per se, i.e. bleaching carried out at an initial pH of over 12, measured in the bleaching liquid at 24.degree. C. before mixing into the pulp. The desired brightness increase is provided in a subsequent stage with or without intermediate washing of the pulp and at a lower initial pH.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: March 29, 1988
    Assignee: Sunds Defibrator AB
    Inventor: Steve Moldenius