Patents by Inventor Irene K. Wedin

Irene K. Wedin 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 making soft paper
    Patent number: 5061344
    Abstract: Soft paper from cellulose fibres is manufactured by wet-forming a first fibre layer. Thereafter air-borne dry fibres are deposited directly on one or both sides of the wet-formed layer while this is still wet, so that a second and possibly a third fibre layer are formed on the first one. Fibre bindings thereby arise between the layers. The wet-formed fibre layer gives the soft paper its strength, while the dry-formed fibers give a soft surface.
    Type: Grant
    Filed: March 14, 1989
    Date of Patent: October 29, 1991
    Assignee: Sunds Defibrator Aktiebolag
    Inventors: Irene K. Wedin, Bo R. Ek