Patents by Inventor Girish A. Pai

Girish A. Pai 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 of making spin-oriented, biconstituent filaments
    Patent number: 5505894
    Abstract: Polyester filaments of high shrinkage and high shrinkage tension may be prepared by heat treatment of undrawn crystalline filaments of low shrinkage and shrinkage tension, and may be used for making polyester yarns of mixed shrinkage and bulky polyester yarns and fabrics therefrom.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: April 9, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hans R. E. Frankfort, Benjamin H. Knox, Girish A. Pai
  • 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
  • Process of making spin-oriented polyester filaments
    Patent number: 5384082
    Abstract: Polyester filaments of high shrinkage and high shrinkage tension may be prepared by heat treatment of undrawn crystalline filaments of low shrinkage and shrinkage tension, and may be used for making polyester yarns of mixed shrinkage and bulky polyester yarns and fabrics therefrom.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: January 24, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hans R. E. Frankfort, Benjamin H. Knox, Girish A. Pai