Patents by Inventor Lars E. R. Wagberg

Lars E. R. Wagberg 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).

  • Fibres of increased specific surface area, a method for their manufacture, fluff pulp consisting of such fibres and the use of the fibres as absorption material
    Patent number: 5492759
    Abstract: Fibres which have an increased specific surface area and improved absorption properties, preferably intended for use in the form of fluff pulp in absorption articles such as diapers, incontinence guards, etc., in which the fibres present a porous layer of hydrophilic chemicals anchored on the fibre surface; a method of producing such fibres, their use in absorption articles and an absorption material which includes the fibres.
    Type: Grant
    Filed: May 5, 1992
    Date of Patent: February 20, 1996
    Assignee: Molnlycke AB
    Inventors: Inger V. Eriksson, Goran E. Annergren, Lars E. R. Wagberg
  • Method of making paper with high filler content
    Patent number: 4824523
    Abstract: The invention relates to a method for producing paper by the addition of a retention - dry strength agent system. The system consists ofcationic starch with a substitution degree of at least 0.005 in an amount of at least 1%,anionic high-polymer with a molecular weight greater than 10.sup.6 and in an amount of 0.003-0.5%, andcationic synthethic polymer in an amount of 0.005-0.5%.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: April 25, 1989
    Assignee: Svenska Traforskningsinstitutet
    Inventors: Lars E. R. Wagberg, Tom S. C. Lindstrom