Patents by Inventor Robert J. Bowling

Robert J. Bowling 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).

  • Processing aids for enhanced machine direction orientation rates and property enhancement of polyolefin films using hydrocarbon waxes
    Patent number: 6887923
    Abstract: The present invention disclose a method for the orientation of a high density polyethylene (“HDPE”) film. The process of the invention comprises forming a HDPE-wax mixture by adding to a HDPE batch a normally solid hydrocarbon wax. The HDPE-wax mixture is subsequently stretched into a film at an orientation temperature below the film's melt temperature. The hydrocarbon wax is characterized by having a drop point equal to or lower than the melting point of the HDPE film. The present invention also provides a film made by the process of the invention and a master batch thereof.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: May 3, 2005
    Assignee: Equistar Chemicals, L.P.
    Inventors: Robert J. Bowling, D. Ryan Breese
  • Processing aids for enhanced machine direction orientation rates and property enhancement of polyolefin films using hydrocarbon waxes
    Publication number: 20040116584
    Abstract: The present invention disclose a method for the orientation of a high density polyethylene (“HDPE”) film. The process of the invention comprises forming a HDPE-wax mixture by adding to a HDPE batch a normally solid hydrocarbon wax. The HDPE-wax mixture is subsequently stretched into a film at an orientation temperature below the film's melt temperature. The hydrocarbon wax is characterized by having a drop point equal to or lower than the melting point of the HDPE film. The present invention also provides a film made by the process of the invention and a master batch thereof.
    Type: Application
    Filed: December 11, 2002
    Publication date: June 17, 2004
    Inventors: Robert J. Bowling, D. Ryan Breese