Patents by Inventor Wallin Nils-Hakan

Wallin Nils-Hakan 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).

  • Method for the production of cellulosic board materials
    Patent number: 4528309
    Abstract: A method for producing board materials of cellulose containing components using formaldehyde-based curable glues. By treatment of at least one part of the components at a low moisture content with a formaldehyde absorbing agent the board materials obtained after pressing get a low content of free formaldehyde and very good strength properties. The moisture content of the components at the treatment is lower than 12 percent by weight. the formaldehyde absorbing agent is preferably urea.
    Type: Grant
    Filed: October 5, 1983
    Date of Patent: July 9, 1985
    Assignee: AB Casco
    Inventors: Helgesson Gote, Mansson Bjorn, Wallin Nils-Hakan