Patents by Inventor Richard A. Dratz

Richard A. Dratz 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).

  • Surface coating of polyolefin film
    Patent number: 4140822
    Abstract: A method for manufacturing a coated, paintable, ink receptive and glueable polyolefin film. A polyolefin film is uniformly coated with an aqueous dispersion comprising aluminum chlorhydroxide, phosphoric acid and high molecular weight polyvinyl alcohol.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: February 20, 1979
    Assignee: Thilmany Pulp & Paper Company
    Inventor: Richard A. Dratz