Patents by Inventor Stig G. Johansson

Stig G. Johansson 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 for dry-defibration of chemical, chemi-mechanical and mechanical fiber pulp or mixtures thereof
    Patent number: 4252279
    Abstract: An improved method and means for dry defibrating fiber material in the form of chemical, chemi-mechanical or mechanical fiber pulp or mixtures thereof by means of known defibration devices, so-called shredders, mills or similar devices, to obtain fluff, i.e. exposed, unbonded fibers and fiber flocks used in a manner known per se to make paper, paper-like and absorbent products, by which method said fiber material is fed to the defibration device in the form of a continuous web from a bale being said means and consisting of a pressed or non-pressed zig-zag-shaped, repeatedly folded continuous web.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: February 24, 1981
    Assignee: Sodra Skogsagarna AB
    Inventors: Stig G. Johansson, Sverker R. F. Y. Bjorck