Patents Assigned to American Uni-Tech, Inc.
  • Fire retardant and method for preparation
    Patent number: 5405555
    Abstract: The invention relates to an aqueous fire retardant solution, a method of making said solution, and a method of using said solution as a coating for cellulosic materials and cellulosic containing materials. The fire retarding solution consists essentially of: ammonium sulfate 3-10% by weight, boric acid 1-5% by weight, borax 0.3-1% by weight, hydrogen peroxide 1-5% by weight, and optionally a surfactant and/or an alkyl phthalate ester.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: April 11, 1995
    Assignee: American Uni-Tech, Inc.
    Inventor: Elwood N. Riker, deceased