Patents by Inventor Ley Deresh

Ley Deresh 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 chromate conversion coatings
    Patent number: 5080733
    Abstract: Chromate conversion coatings of improved corrosion resistance are produced through use of chromate conversion coating compositions containing alkane sulfonic acid.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: January 14, 1992
    Assignee: MacDermid, Incorporated
    Inventor: Ley Deresh