Patents by Inventor Paavo Kontinen

Paavo Kontinen 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: 5685353
    Abstract: The invention is related to a method and apparatus for compressive shape-drying of wood (1). In the first phase of the method, green wood is compressed to a desired shape simultaneously heating the wood. According to the invention, during the first phase the wood (1) is compressed against gas-permeable surfaces (3, 4) rapidly to a desired and thickness. during the second phase of the compression process, the compression pressure is lowered to a level causing a thickness reduction equal to or greater than the thickness reduction caused by the drying of the wood, and the internal temperature of the wood is lowered with the progress of the compression process.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: November 11, 1997
    Assignee: Valtion teknillinen tutkimuskeskus
    Inventors: Pertti Viitaniemi, Paavo Kontinen