Patents by Inventor Ingela Ekebro

Ingela Ekebro 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).

  • Patent number: 5879510
    Abstract: A chemimechanical pulp for use in the manufacture of paper or paperboard products where a high drainability, bulky pulp is desired. The pulp has a long fiber content of between 60 and 75%, a fine-material content of at most 14%, a shive content of less than 0.5%, is refined to a freeness of 600 ml CSF at the lowest, and has a tensile index of at least 10 kNm/kg. A method for producing such a pulp comprises: a) impregnating chips with a lignin softening chemical; b) preheating the chips; c) refining the chips to papermaking pulp; wherein the chips are impregnated and heated over a total time period of at most 4 minutes; a) using a hot impregnating liquid having a temperature of at least 130.degree. C.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: March 9, 1999
    Assignee: SCA Hygiene Products AB
    Inventors: Tjell-Ake Hagglund, Ingela Ekebro, Hans Hoglund, Roland Back