Patents by Inventor Heinz Lausch

Heinz Lausch 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).

  • Treatment of waste paper, especially to effect the recovery of clean fibers therefrom
    Patent number: 3994770
    Abstract: Waste paper is treated to recover the fiber content thereof in a clean condition and without damaging the fibers by shredding the paper, admixing the paper with a treatment agent, retaining the paper and admixed treatment agent in a treatment zone for a period of time during which the paper is substantially completely disintegrated in the treatment agent, diluting the mixture, and processing the mixture through further treatment stations to a final flotation stage wherein the now clean fibers are separated from the liquid whereby the fibers can then be used in a further papermaking operation.
    Type: Grant
    Filed: July 25, 1974
    Date of Patent: November 30, 1976
    Assignee: J. M. Voith GmbH
    Inventor: Heinz Lausch