Patents by Inventor Creighton P. Malone

Creighton P. Malone 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 for producing stain resistant polyamide fibers
    Patent number: 4780099
    Abstract: Polyamide fibers are made stain resistant by treating them with a sulfonated naphthol- or sulfonated phenol-formaldehyde condensation product. Applying the stain-resist compounds at pH values of between 1.5 and 2.5 renders them stable to yellowing upon exposure to agents in the environment such as NO.sub.2.
    Type: Grant
    Filed: August 26, 1986
    Date of Patent: October 25, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Imrich Greschler, Creighton P. Malone, Armand P. Zinnato