Patents by Inventor Edward Heinzelman, Jr.

Edward Heinzelman, Jr. 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).

  • Metal protective coating compositions, their preparation and use
    Patent number: 3985584
    Abstract: Disclosed is an acid, aqueous metal surface treating composition comprising chromium phosphate, chromic acid, a phosphate ion providing compound and a polyvinyl alcohol polymer hydrolyzed to at least 99%. Also present is a phosphate of a water soluble amine.
    Type: Grant
    Filed: October 25, 1972
    Date of Patent: October 12, 1976
    Assignee: Oakite Products, Inc.
    Inventors: Francis Chee Keung Chan, Edward Heinzelman, Jr.