Patents by Inventor Harry A. Biletch

Harry A. Biletch 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).

  • Styrenic polyamide alloy
    Patent number: 5032644
    Abstract: Polymer alloys having improved toughness comprise a blend of 20 to 30 weight percent of a polyamide; 15 to 30 weight percent of a rubbery polymer and 60 to 40 weight percent of a vinyl polymer containing 1 to 10 weight percent of a vinyl isocyanate monomer. Preferred isocyanate monomers are m- or p-isopropenyl-alpha, alpha dimethylbenzyl isocyanate.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: July 16, 1991
    Assignee: Polysar Financial Services S.A.
    Inventors: Harry A. Biletch, Emanuiel Cooper
  • Transparent impact polymers
    Patent number: 4772667
    Abstract: A thermoplastic polymer comprising a styrenic monomer, an acrylate, a methacrylate and a block copolymer is provided which possesses an unexpected excellent balance of properties including good physical properties, good elongation and a high degree of transparency. Also provided are processes for the preparation of the thermoplastic polymer.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: September 20, 1988
    Assignee: Polysar Financial Services S.A.
    Inventors: Harry A. Biletch, Richard A. Di Manno, Robert J. Gorka
  • Transparent impact polymers
    Patent number: 4680337
    Abstract: A thermoplastic polymer comprising a styrenic monomer, an acrylate, a methacrylate and a block copolymer is provided which possesses an unexpected excellent balance of properties including good physical properties, good elongation and a high degree of transparency. Also provided are processes for the preparation of the thermoplastic polymer.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: July 14, 1987
    Assignee: Polysar Financial Services S.A.
    Inventors: Harry A. Biletch, Richard A. Di Manno, Robert J. Gorka
  • High impact polystyrene resin
    Patent number: 4183878
    Abstract: Polystyrene resins of high impact are provided by graft copolymerization of styrene with elastomeric polymers of a diene monomer in the presence of a peroxy-free azo catalyst such as 1-cyano-(tert-butylazo) cyclohexane.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: January 15, 1980
    Assignee: Solar Chemical Corporation
    Inventors: Harry A. Biletch, Rodney Route, Jack Zomlefer