Patents by Inventor Jan-Olof Bengtsson

Jan-Olof Bengtsson 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).

  • Apparatus for distribution of particles on paper, process for providing paper with particles and particle coated paper
    Patent number: 6558754
    Abstract: The invention relates to an apparatus (1) for distribution of hard particles to the surface of a paper web (20) impregnated with resin. The apparatus includes a feed hopper (3), a rotating doctor-roll (2) placed under the feed hopper (3). The doctor-roll (2) is in spaced relation to said paper web (20) fed under the doctor-roll (2). There is a means for releasing the particles from the doctor-roll (2) and distributing them evenly on the fed paper web. Said means comprises an electrode arrangement (4). The electrode arrangement (4) is enclosed by a casing (5) provided with a downwards direction sliding plate (7). The invention also includes a process where the apparatus is used as well as particle coated paper produced by the process.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: May 6, 2003
    Assignee: Pergo (Europe) AB
    Inventors: Per-Erik Velin, Brian Perkins, Jan-Olof Bengtsson, Henrik Frosthagen