Patents by Inventor David A. Kreider

David A. Kreider 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).

  • Patent number: 6900281
    Abstract: A gas-phase olefin polymerization process in a plug flow reactor uses a catalyst system containing a magnesium halide supported titanium-containing component, an organoaluminum component, and at least one external electron donor component; in the process a first external donor component is added to the reactor at an injection point axially near an injection point for the supported transition metal containing component, and at least a second external donor component is added to the reactor axially downstream from the injection point for the first external donor component.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: May 31, 2005
    Inventors: Jerome A. Streeky, David A. Kreider, Chi-Hung Lin, Mark G. Reichmann
  • Publication number: 20030149196
    Abstract: A gas-phase olefin polymerization process in a plug flow reactor uses a catalyst system containing a magnesium halide supported titanium-containing component, an organoaluminum component, and at least one external electron donor component; in the process a first external donor component is added to the reactor at an injection point axially near an injection point for the supported transition metal containing component, and at least a second external donor component is added to the reactor axially downstream from the injection point for the first external donor component.
    Type: Application
    Filed: December 19, 2002
    Publication date: August 7, 2003
    Inventors: Jerome A. Streeky, David A. Kreider, Chi-Hung Lin, Mark G. Reichmann