Patents by Inventor Peter H. Von Reth

Peter H. Von Reth 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).

  • Cathode-ray tube
    Patent number: 4174490
    Abstract: Disclosed is a cathode-ray tube having a face plate of soft glass which up to an accelerating voltage of 40 KV gives an X-ray emission of at most 0.5 mr/h measured at a distance of 5 cm. The glass has a strain point between 450.degree. and 480.degree. C. and a softening temperature between 660.degree. and 770.degree. C. and comprises, inter alia, 3-14% by weight of BaO and 5-10% by weight of PbO.
    Type: Grant
    Filed: May 19, 1978
    Date of Patent: November 13, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Klaus C. Van Erk, Marinus Ploeger, Peter H. Von Reth