Patents by Inventor Robert L. Bamberger

Robert L. Bamberger 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).

  • Supported polymerization catalyst systems, their production and use
    Patent number: 5616665
    Abstract: This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported metallocene catalyst able to produce polymers having broader molecular weight distribution and a higher molecular weight. Not only are such polymers easily processable as compared with metallocene polymers produced with other support methods but the methods of this invention provides for a supported catalyst with increased activity.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: April 1, 1997
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Polymerization catalysts, their production and use
    Patent number: 5536796
    Abstract: The invention generally relates to a catalyst, particularly a metallocene catalyst and catalyst system useful in the polymerization of olefins into a polymer product. The polymer product has a broad molecular weight distribution, a high molecular weight and a narrow composition distribution and is easily processable.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 16, 1996
    Assignee: Exxon Chemical Company
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Polymerization catalysts, their production and use
    Patent number: 5470811
    Abstract: The invention generally relates to a catalyst, particularly a metallocene catalyst and catalyst system useful in the polymerization of olefins into a polymer product. The polymer product has a broad molecular weight distribution, a high molecular weight and a narrow composition distribution and is easily processable.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: November 28, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Supported polymerization catalysts, their production and use
    Patent number: 5422325
    Abstract: This invention is generally directed toward a supposed catalyst system useful for polymerizing olefins. The method for supposing the catalyst of the invention provides for a supposed metallocene catalyst able to produce polymers having broader molecular weight distribution and a higher molecular weight. Not only are such polymers easily processable as compared with metallocene polymers produced with other support methods but the methods of this invention provides for a supposed catalyst with increased activity.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: June 6, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger
  • Catalyst and method of broadening polymer molecular weight distribution and increasing polymer tensile impact strength and products made thereof
    Patent number: 5281679
    Abstract: A catalyst and method of producing polyolefins having broadened molecular weight distributions and enhanced tensile impact strengths utilizing a silica supported metallocene-alumoxane catalyst system, wherein at least one of the metallocenes has at least one cyclopentadienyl ring being substituted by at least one optionally substituted hydrocarbon substituent having a 2.degree. or 3.degree. carbon atom with which it is covalently bonded to the cyclopentadienyl ring.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: January 25, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Moses O. Jejelowo, Robert L. Bamberger