Patents Assigned to Wyerhaeuser NR Company
  • Method of making a fiber cement board with improved properties and the product
    Patent number: 8273174
    Abstract: A cement product incorporating nanocrystalline cellulose and cellulose fiber throughout the product and a method of making the product.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: September 25, 2012
    Assignee: Wyerhaeuser NR Company
    Inventors: Sherry L Thomson, David J O'Callaghan, John A Westland, Bing Su