Patents by Inventor Laszlo A. Muhl

Laszlo A. Muhl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fire retardant foam materials
    Patent number: 5057545
    Abstract: A fire retardant flexible polyurethane foam and method for its production are provided. The foam is prepared by reacting in the presence of a metallic catalyst and a non-metallic catalyst (a) a polyol having a molecular weight between about 1000 and about 9000; (b) a polyisocyanate; (c) a cross-linking agent; (d) a foaming agent; (e) a surfactant; (f) a halogenated hydrocarbon; (g) melamine powder; (h) antimony oxide; and (i) sodium borate.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: October 15, 1991
    Assignee: Fire Retardant Foam Technologies, Inc.
    Inventors: Laszlo A. Muhl, Thomas T. Omori, John Milligan
  • Fire retardant foam materials
    Patent number: 4960803
    Abstract: A method is provided for making a fire retardant rigid polyurethane foam. The method comprises reacting, in the presence of a non-metallic catalyst: (a) a polyol having a molecular weight between about 200 and about 6000; (b) polyisocyanate; (c) a foaming agent; (d) a surfactant; and (e) a single salt consisting of ammonium phosphate.
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: October 2, 1990
    Inventors: Laszlo A. Muhl, Thomas I. Omori, John Milligan