Patents by Inventor Franklin Dick

Franklin Dick 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).

  • Ball point pen back end closure
    Patent number: 4108559
    Abstract: A pen plug particularly useful in ballpoint pens as a stopper to prevent back leakage of ink from the ink reservoir of such pens and yet function to allow passage of air into the pen interior. Such plugs include a plurality of substantially continuous synthetic filaments such as cellulose acetate, natural fibrous threads and synthetic filaments or mixtures of differing synthetic filaments bundled, braided and preferably encased in a plastic sheath.
    Type: Grant
    Filed: July 21, 1976
    Date of Patent: August 22, 1978
    Assignee: Dart Industries Inc.
    Inventors: Franklin Dick, Peter H. Seckel