Patents by Inventor Johannes Hendrikus Nicolaas Van Vucht

Johannes Hendrikus Nicolaas Van Vucht 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).

  • Alkali metal vapour generator
    Patent number: 3945949
    Abstract: For the introduction of an alkali metal vapour into an electric discharge tube, in particular for the vapour deposition of surfaces for photo-emission or secondary electron emission in such a tube, generators are used which comprise a filling which consists of at least one alkali metal alloyed with gold and/or silver, and/or copper alloyed with gold or silver.
    Type: Grant
    Filed: June 7, 1973
    Date of Patent: March 23, 1976
    Assignee: U. S. Philips Corporation
    Inventors: Johannes Hendrikus Nicolaas Van Vucht, Jan Josephus Bernardus Fransen