Patents by Inventor Joe Dennis Zaharko

Joe Dennis Zaharko 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).

  • Integrated string
    Patent number: 4055941
    Abstract: A string suitable for use in game rackets such as for tennis contains from two to four heavy denier monofilaments of an oriented synthetic polymer. Each monofilament has at least two opposite flattened sides throughout its length. The monofilaments are ply-twisted and bonded together along their lengths with each being bonded along a flattened side to at least one other such monofilament. Particularly suitable monofilaments have a substantially ribbon-shaped cross-section with a length-to-width ratio of from two to four.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: November 1, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph Tracy Rivers, Jr., Joe Dennis Zaharko