Patents by Inventor Heather E. Hutflesz

Heather E. Hutflesz 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).

  • Method of forming pile products by tack-spinning and heat treatment therefore
    Patent number: 4189336
    Abstract: A method for increasing the depth of a tack-spun thermoplastic pile on a backing layer comprises space heating the pile side of the product for a time and temperature less than that at which the pile collapses, said temperature being between the glass rubber transition temperature but above ambient and the temperature at which the pile collapses, using a heat source not in contact with the pile, and subsequently cooling the pile to ambient temperature.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: February 19, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventor: Heather E. Hutflesz