Patents by Inventor Antoaneta Tschawow

Antoaneta Tschawow 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).

  • Writing instrument with reservoir having perpendicular fibers
    Patent number: 4764045
    Abstract: A writing instrument includes a writing fluid reservoir in the form of a fiber body, in which there is a coaxially extending writing fluid conductor with capillary conduits. The fibers of the reservoir extend at right angles to and radially with respect to the longitudinal axis of the conductor and communicate with it in a fluid-conducting manner.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: August 16, 1988
    Assignee: Koh-I-Noor Rapidograph, Inc.
    Inventor: Antoaneta Tschawow