Patents by Inventor Pei Pei Ang

Pei Pei Ang 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).

  • Spandex blended in natural rubber
    Patent number: 5872186
    Abstract: Staple-length fibers of spandex are blended into compounded natural rubber to improve the mechanical properties of the rubber.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: February 16, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Pei Pei Ang