Patents by Inventor David G. Bennie

David G. Bennie 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).

  • Process for polyester fine hollow filaments
    Patent number: 5585182
    Abstract: A post-coalescence melt-spinning process for preparing fine undrawn hollow polyester filaments having excellent mechanical quality and uniformity at high speeds (2-5 km/min) involving selection of polymer viscosity and spinning conditions, whereby the void content of the resulting new undrawn filaments is essentially maintained or increased on cold-drawing or hot-drawing with or without post heat treatment, and the new fine hollow polyester filaments obtained thereby.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: December 17, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Arun P. Aneja, David G. Bennie, Robert J. Collins, Hans Rudolf E. Frankfort, Stephen B. Johnson, Benjamin H. Knox, Elmer E. Most, Jr.
  • Process of making fine polyester hollow filaments
    Patent number: 5487859
    Abstract: A post-coalescence melt-spinning process for preparing fine undrawn hollow polyester filaments having excellent mechanical quality and uniformity at high speeds (2-5 km/min) involving selection of polymer viscosity and spinning conditions, whereby the void content of the resulting new undrawn filaments is essentially maintained or increased on cold-drawing or hot-drawing with or without post heat treatment, and the new fine hollow polyester filaments obtained thereby.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: January 30, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Arun P. Aneja, David G. Bennie, Robert J. Collins, Hans Rudolf E. Frankfort, Stephen B. Johnson, Benjamin H. Knox, Elmer E. Most, Jr.
  • Process of making polyester mixed yarns with fine filaments
    Patent number: 5417902
    Abstract: Polyester mixed fine filament yarns having excellent mechanical quality and uniformity, and preferably with a balance of good dyeability and shrinkage, are prepared by a simplified direct spin-orientation process by selection of polymer and spinning conditions.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: May 23, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: David G. Bennie, Robert J. Collins, Hans R. E. Frankfort, Stephen B. Johnson, Benjamin H. Knox, Joe F. London, Jr., Elmer E. Most, Jr., Girish A. Pai