Patents by Inventor Wallace S. Pettersen

Wallace S. Pettersen 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).

  • Composite board with OSB faces
    Patent number: 6852386
    Abstract: A method and structure is disclosed for oriented strand boards that utilize a 3-layer, sandwich-type structural panel. The two outer faces are preferably made of wood flakes and the inner core preferably is made out of compression resistant products such as wood chips, paper mill sludge or recycled paper. The core is either a continuous perforated mat or a plurality of individual chunks of compression resistant materials, and preferably contains voids to provide for a reduction in weight of the board.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: February 8, 2005
    Assignee: Norbord Inc.
    Inventors: Alex Nadezhdin, Wallace S. Pettersen, Maurice Poirier
  • Composite board with OSB faces
    Publication number: 20020176960
    Abstract: A method and structure is disclosed for oriented strand boards that utilize a 3-layer, sandwich-type structural panel. The two outer faces are preferably made of wood flakes and the inner core preferably is made out of compression resistant products such as wood chips, paper mill sludge or recycled paper. The core is either a continuous perforated mat or a plurality of individual chunks of compression resistant materials, and preferably contains voids to provide for a reduction in weight of the board.
    Type: Application
    Filed: March 8, 2001
    Publication date: November 28, 2002
    Inventors: Alex Nadezhdin, Wallace S. Pettersen, Maurice Poirier
  • Dimensionally stable oriented strand board (OSB) and method for making the same
    Patent number: 6333097
    Abstract: The present invention is concerned with a method for obtaining a wood panel, preferably an OSB panel, with significantly reduced thickness swelling properties when exposed to or contacted with moisture or water. The novel dimensionally stable panels are obtained by an alternate vacuum—steam injection method. The method is an after-fabrication, or post-treatment method, and involves one or more cycles of applying a vacuum followed by injection of hot steam in a sealed treatment chamber.
    Type: Grant
    Filed: May 4, 2000
    Date of Patent: December 25, 2001
    Assignee: Nexfor Inc.
    Inventors: Andrew Go, Wallace S. Pettersen, Alain Laplante
  • Dimensionally stable oriented strand board (OSB) and method for making the same
    Patent number: 6098679
    Abstract: The present invention is concerned with a method for obtaining a wood panel, preferably an OSB panel, with significantly reduced thickness swelling properties when exposed to or contacted with moisture or water. The novel dimensionally stable panels are obtained by an alternate vacuum--steam injection method. The method is an after-fabrication, or post-treatment method, and involves one or more cycles of applying a vacuum followed by injection of hot steam in a sealed treatment chamber.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: August 8, 2000
    Assignee: Noranda Forest Inc.
    Inventors: Andrew Go, Wallace S. Pettersen, Alain Laplante