Patents Represented by Attorney C. J. Shoaf

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  • Process for drawing polyamide monofilaments
    Patent number: 4009511
    Abstract: Heavy denier, polyamide monofils are produced by the coupled steps of spinning, quenching, drawing and winding. Quenching involves passage of the filament through an air gap and a water bath. There are two stages of drawing. In the first stage, pressurized steam is used to deorient surface polymer and as a draw assist.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: March 1, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Sibbley Paul Gauntt