Patents by Inventor Franciscus J. Rimmelzwaan

Franciscus J. Rimmelzwaan 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).

  • Getter holder and electric discharge tube comprising such a holder
    Patent number: 4128782
    Abstract: A body of compressed powder including a gettering material that can be released from the body by heating is held in a getter holder having at least one cavity with a substantially U-shaped cross-section. In order to lock the body in the cavity, at least a part of the inner wall of the cavity has a slight surface unevenness the extent of which is between 0.5 .mu.m and a few tenths of the wall thickness of the holder.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: December 5, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Jan J. B. Fransen, Franciscus J. Rimmelzwaan