Patents Assigned to The Weyerhaeuser Company
  • Process for melt blowing continuous lyocell fibers
    Patent number: 6306334
    Abstract: The present invention is directed to a method of preparing continuous lyocell fibers by melt blowing techniques, a pulp useful for making lyocell fibers and to the fibers produced by the method. In particular, the method enables high throughputs of fibers of cotton-like deniers. The fibers are readily cut into staple lengths and can be spun into yarns with excellent knitting and weaving characteristics which dye exceptionally well.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: October 23, 2001
    Assignee: The Weyerhaeuser Company
    Inventors: Mengkui Luo, Vincent A. Roscelli, Senén Camarena, Amar N. Neogi, Michael J. Yancey, Paul G. Gaddis
  • Process for re-manufacturing wood board and the product produced thereby
    Patent number: 5034259
    Abstract: The process begins with a single board, for instance a flat grain board, of selected dimensions. The single board may be clear or not or may be cut and rejoined to remove defects. The board is then sawn in a selected manner and the resulting boards are bonded together by gluing to form a remanufactured board, in such a manner that the glue lines are substantially invisible. In one preferred embodiment, a flat grain board is rip sawn and then edge glued to form a vertical grain board of selected dimensions.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: July 23, 1991
    Assignee: The Weyerhaeuser Company
    Inventor: Earl M. Barker