Patents Assigned to Royce Associates
  • Process for bleaching pulp or paper
    Patent number: 6758942
    Abstract: A process for bleaching substantially lignin-free pulp or paper in a single-stage bleaching process or multi-stage bleaching process; comprising contacting said substantially lignin-free pulp or paper with an aqueous reductive bleaching solution comprising hydroxymethane sulfinic acid during a reductive bleaching stage for sufficient amount of time to at least partially bleach said substantially lignin-free pulp or paper.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: July 6, 2004
    Assignee: Royce Associates
    Inventor: Ronald C. Naddeo
  • Marbleized resin materials and methods for making same
    Patent number: 5688839
    Abstract: The present invention relates to a mixture of different colored resin particles, some or all of which are irradiated. The present invention also relates to the process of making a marbleized resin composite from this mixture of colored resin particles, as well as the marbleized composite product. The marbleized resin material of the invention displays sharp color delineation between each colored component.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: November 18, 1997
    Assignee: Royce Associates
    Inventor: Wylie H. Royce
  • Child's carrying case
    Patent number: D326773
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: June 9, 1992
    Assignee: Royce Associates
    Inventors: Joseph R. Pettinati, Karyn M. Austin