Patents by Inventor Robert J. Gorka

Robert J. Gorka 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).

  • Tetrafunctional initiator
    Patent number: 6608141
    Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: August 19, 2003
    Assignee: NOVA Chemicals Inc.
    Inventors: Steven M. Krupinski, Robert J. Gorka
  • Tetrafunctional initiator
    Publication number: 20020156184
    Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including C02 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.
    Type: Application
    Filed: March 7, 2002
    Publication date: October 24, 2002
    Applicant: NOVA CHEMICALS, INC.
    Inventors: Steven M. Krupinski, Robert J. Gorka
  • Tetrafunctional initiator
    Patent number: 6433092
    Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: August 13, 2002
    Assignee: Nova Chemicals Inc.
    Inventors: Steven M. Krupinski, Robert J. Gorka
  • Tetrafunctional initiator
    Publication number: 20010049418
    Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.
    Type: Application
    Filed: March 6, 2001
    Publication date: December 6, 2001
    Applicant: NOVA Chemicals Inc.
    Inventors: Steven M. Krupinski, Robert J. Gorka
  • Orthopaedic structures from polymeric materials
    Patent number: 4951656
    Abstract: Orthopaedic structures, and processes for making the same, are provided in which the orthopaedic structure comprises a polymeric material which contains a block copolymer having grafted to it styrene, an alkyl acrylate and optionally methyl methacrylate. The orthopaedic structures are substantially transparent, formable and reformable at temperatures of about 45.degree. to about 65.degree. C. and are essentially rigid at ambient temperatures.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: August 28, 1990
    Assignee: Polysar Financial Services S.A.
    Inventors: Robert J. Gorka, Ervin R. Dan
  • 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