Patents by Inventor Robert Kenneth Roop

Robert Kenneth Roop 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).

  • Spinnerets with orifices for improved filament cross-sections
    Patent number: 6371751
    Abstract: Novel spinnerets for producing multi-grooved filaments have a row of apertures connected by slots that correspond to the grooves in the periphery of the resulting filaments.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: April 16, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Arun Pal Aneja, Robert Kenneth Roop
  • Filament cross-sections
    Patent number: 5834119
    Abstract: A new polyester fiber is provided with an improved scalloped-oval cross-section, such as provides a surprising combination of advantages in downstream products, such as fabrics and garments.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: November 10, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Robert Kenneth Roop