Patents by Inventor Stephen Paul Jaker

Stephen Paul Jaker 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).

  • Bimodal polyethylene compositions for blow molding applications
    Patent number: 7868092
    Abstract: A bimodal polyethylene composition that includes ethylene-derived units, and, optionally, one or more other olefin-derived units, wherein the bimodal polyethylene composition possesses a density of at least 0.940 g/cc, an average molecular weight (Mw) of from 200,000 to 370,000, a z-average molecular weight (Mz) of from 1,500,000 to 3,400,000 Daltons, and a z+1 average molecular weight (Mz+1) of from 2,500,000 to 6,800,000 Daltons, is provided in various embodiments. Articles made therefrom and methods of making the same are also provided.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: January 11, 2011
    Assignee: Univation Technologies, LLC
    Inventors: Tae Hoon Kwalk, Stephen Paul Jaker, Sun-Chueh Kao, Mark Bradley Davis, Natarajan Muruganandam, Jo Ann Marie Canich
  • Bimodal polyethylene compositions for blow molding appplications
    Publication number: 20080312380
    Abstract: A bimodal polyethylene composition that includes ethylene-derived units, and, optionally, one or more other olefin-derived units, wherein the bimodal polyethylene composition possesses a density of at least 0.940 g/cc, an average molecular weight (Mw) of from 200,000 to 370,000, a z-average molecular weight (Mz) of from 1,500,000 to 3,400,000 Daltons, and a z+1 average molecular weight (Mz+1) of from 2,500,000 to 6,800,000 Daltons, is provided in various embodiments. Articles made therefrom and methods of making the same are also provided.
    Type: Application
    Filed: May 15, 2008
    Publication date: December 18, 2008
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Tae Hoon Kwalk, Stephen Paul Jaker, Sun-Chueh Kao, Mark Bradley Davis, Natarajan Muruganandam, Jo Ann Marie Canich
  • Blow molding resins with improved ESCR
    Patent number: 6982304
    Abstract: Polyethylene resins having improved environmental stress crack resistance, stiffness and impact resistance is made by a process comprising feeding both a chromium oxide catalyst and a silyl chromium catalyst into a polymerization reactor. The chromium oxide catalyst and the silyl chromium catalyst are on separate supports. The chromium oxide catalyst is 25–50 weight percent and the silyl chromium catalyst is 50–75 weight percent of the total weight of catalyst. The catalysts may be added separately or as a single mixture.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: January 3, 2006
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Cliff Robert Mure, Guylaine St. Jean, Stephen Paul Jaker, Robert J. Jorgensen, Karen Breetz