Patents by Inventor Perry H. C. Lin

Perry H. C. Lin 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).

  • Hollow filament cross-sections containing four continuous voids
    Patent number: 5362563
    Abstract: Continuous synthetic filaments having a four sided cross-sectional contour and four substantially equispaced continuous voids are disclosed. The voids have a substantially round or nonround shape, and each void is substantially centered on a side of the filament's contour.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: November 8, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Perry H.-C. Lin
  • Processing of pigmented nylon fibers using modified polymers
    Patent number: 5290850
    Abstract: An improved process for melt spinning a pigmented hexamethylene adipamide fiber from a melt blend of a polymer and a colored pigment wherein the polymer is a random interpolyamide or a block polymer having two different difunctional recurring amide-forming moieties other than those which form hexamethylene adipamide is disclosed along with pigmented hexamethylene adipamide polymer fibers having tenacities greater than 7.5 or even 8 grams per denier.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: March 1, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ketan G. Shridharani, Peter R. Witt, Perry H. C. Lin, Sundar M. Rao