Patents by Inventor Liisa Muilu

Liisa Muilu 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).

  • Dewatering member with a composite body for a paper or board machine and method for manufacturing a dewatering member with a composite body for a paper or board machine
    Patent number: 7291248
    Abstract: A dewatering member for a paper or board machine has a composite body (13) and a hard surface layer (12). The composite body (13) is manufactured in a pultrusion process. An adhesion layer (11) is formed on desired outer surfaces of the composite body (13) such that reinforcements passed to the adhesion layer (11) have been passed to the pultrusion process through a separate resin bath, to which an adhesion improving agent has been added such that the hard surface layer (12) can be applied directly onto it, and reinforcements forming the inner portion of the composite body (13) have been passed to the pultrusion process through a second resin bath. The composite body (13) is coated with a hard coating layer (12) produced by thermal spraying, and the coating (12) is ground.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: November 6, 2007
    Assignees: Exel Oyj, Metso Paper, Inc.
    Inventors: Veli-Pekka Tarkiainen, Liisa Muilu, Kirsi Kervinen, Petri Sorsa
  • Dewatering member with a composite body for a paper or board machine and method for manufacturing a dewatering member with a composite body for a paper or board machine
    Publication number: 20030106663
    Abstract: A dewatering member for a paper or board machine has a composite body (13) and a hard surface layer (12). The composite body (13) is manufactured in a pultrusion process. An adhesion layer (11) is formed on desired outer surfaces of the composite body (13) such that reinforcements passed to the adhesion layer (11) have been passed to the pultrusion process through a separate resin bath, to which an adhesion improving agent has been added such that the hard surface layer (12) can be applied directly onto it, and reinforcements forming the inner portion of the composite body (13) have been passed to the pultrusion process through a second resin bath. The composite body (13) is coated with a hard coating layer (12) produced by thermal spraying, and the coating (12) is ground.
    Type: Application
    Filed: November 20, 2002
    Publication date: June 12, 2003
    Inventors: Veli-Pekka Tarkiainen, Liisa Muilu, Kirsi Kervinen, Petri Sorsa