Patents by Inventor David Andrew Presken

David Andrew Presken 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).

  • Ziegler-natta catalyst, preparation, and use for the polymerization of alkenes
    Patent number: 7893175
    Abstract: A method for making a solid catalytic component for a Ziegler-Natta catalyst includes contacting a particulate porous support with a solution of a hydrocarbon soluble organomagnesium precursor compound in a hydrocarbon solvent; and reacting said hydrocarbon soluble organo-magnesium precursor compound with an amount of aliphatic or aromatic alcohol, said amount being within an acceptable range of a molar equivalent of aliphatic or aromatic alcohol calculated according to formula (I): Equ Alkanol = 2 · [ ( mmole ? ? MgR / g ? ? support ) - 2.1 - 0.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: February 22, 2011
    Assignee: Lummus Novolen Technology GmbH
    Inventors: Frank Wolf Spaether, David Andrew Presken
  • Ziegler-Natta catalyst, preparation, and use for the polymerization of alkenes
    Patent number: 7329626
    Abstract: A method for making a solid catalytic component for a Ziegler-Natta catalyst includes contacting a particulate porous support with a solution of a hydrocarbon soluble organomagnesium precursor compound in a hydrocarbon solvent; and reacting said hydrocarbon soluble organo-magnesium precursor compound with an amount of aliphatic or aromatic alcohol, said amount being within an acceptable range of a molar equivalent of aliphatic or aromatic alcohol calculated according to formula (I): Equ Alkanol = 2 ? · [ ( mmole ? ? MgR ? / ? g ? ? support ) - 2.1 - 0.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: February 12, 2008
    Assignee: Lummus Novolen Technology GmbH
    Inventors: Frank Wolf Spaether, David Andrew Presken