Patents by Inventor Raymond W. Nalepa

Raymond W. Nalepa 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).

  • Two-component intumescent flame retardant
    Patent number: 5204392
    Abstract: An improved flame reardant polyolefin is disclosed which comprises a combination of ammoniumm polyphosphate; tris(2-hydroxyethyl) isocyanurate; and a selected silica in an amount from 0.5 percent to an amount equal to one-half the amount by weight of THEIC, wherein the silica meets defined surface arera, particle size and absorption criteria.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: April 20, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: Raymond W. Nalepa, Daniel J. Scharf
  • Three-component intumescent flame retardant
    Patent number: 5204393
    Abstract: An improved flame retardant polyolefin is disclosed which comprises a combination of ammonium polyphosphate; tris(2-hydroxyethyl) isocyanurate; and melamine cyanurate; and a selected silica in an amount from 0.5 percent to an amount equal to one-half the amount by weight of THEIC, wherein the selected silica meets defined surface area, particle size and absorption criteria.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: April 20, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: Raymond W. Nalepa, Daniel J. Scharf