Patents by Inventor Bjorn Sandelin

Bjorn Sandelin 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: 6809144
    Abstract: The present invention relates to thermoplastic resin compositions, particularly polyolefines, polyvinylchloride and polyamide. The thermoplastic resin compositions contain between 3 and 400% by weight of filler based on the weight of the resin, said filler comprising talc and microsilica where the weight ratio between talc and microsilica is between 15:1 and 1:15. The invention further relates to a method for the production of thermoplastic resin compositions, and to a filler blend for use in thermoplastic resins, said blend containing talc and microsilica in a weight ratio between 15:1 and 1:15.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: October 26, 2004
    Assignees: Elkem ASA, Mondo Minerals Oy
    Inventors: Tore Danielssen, Anne Linnebo, Bjorn Sandelin
  • Patent number: 5059472
    Abstract: The invention relates to a multi-ply wood product. The supply of wood suited e.g. for the production of plywood has considerably decreased. Consequently, attempts have been made to compensate the deterioration in the quality of the surface finish and in other wood qualities e.g. by means of various coating methods, with varying success. The most important problem has been the insufficient adhesion between the coating and the wood. For the elimination of these problems, a multi-ply wood product has been developed in which at least one layer is formed by a crude fiber ply blank comprising haphazardly oriented fiber material as well as bonding agents, additives and filler materials.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: October 22, 1991
    Assignee: Oy Partek AB
    Inventors: Jean Le Bell, Simo Valjakka, Jussi Pirhonen, Fred Sunden, Erkki Hautaniemi, Pentti Jarvela, Bjorn Sandelin, Rainer Algars