Patents Assigned to Pyrotex Ltd.
  • Fire-retardant
    Patent number: 5076969
    Abstract: A fire-retardant composition comprises a mixture or reaction product of fire-retardant ammonium salt, urea or biuret, and boric acid or a plastic composition of a sodium silicate-impregnated mat which can be applied to a substrate by transfer from a non-adherent backing sheet.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: December 31, 1991
    Assignee: Pyrotex Ltd.
    Inventor: Malcolm F. Fox