Patents by Inventor Werner Bohnert

Werner Bohnert 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).

  • Refillable ink pen
    Patent number: 5518331
    Abstract: A refillable pen having a writing reservoir for supplying a writing tip with ink and an additional supply reservoir for refilling the writing reservoir by operating a first valve. The additional supply reservoir is refilled from outside of the pen through a second valve by an accompanying refill container. The accompanying refill container has an injection needle with a valve and a wall of the refill container forms bellows for increasing the pressure on the liquid inside the refill container.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: May 21, 1996
    Assignee: Storelic AG
    Inventors: Werner Moosmann, Werner Bohnert