Patents by Inventor Lilburn Lafayette Norton

Lilburn Lafayette Norton 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).

  • Product and process
    Patent number: 3968638
    Abstract: A cohesive yarn having latent twist, which is recoverable by relaxation of the yarn in heat and moisture, is composed of crimped and entangled continuous thermoplastic filaments. It provides good tuft definition and a lustrous appearance in pile fabric. Production of the yarn by hot jet-entangling crimped filaments throughout the length of a yarn bundle and heat-setting latent twist in the yarn bundle while false-twisted with an air-torque jet is illustrated.
    Type: Grant
    Filed: June 9, 1975
    Date of Patent: July 13, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Lilburn Lafayette Norton, William Thomas Windley