Patents by Inventor Albert J. Grunfeld

Albert J. Grunfeld 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).

  • Knit fabric with elastic combination yarn
    Patent number: 5198288
    Abstract: A knit fabric with improved machine working loss and dimensional stability has an elastic combination yarn of 10% to 70% elongation incorporated into the fabric. The combination yarn comprises spandex which amounts to 0.2 to 3.5% of the fabric weight.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: March 30, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Albert J. Grunfeld