Patents by Inventor Cornelus Wilhelmus Theresia Van Den Wittenboer

Cornelus Wilhelmus Theresia Van Den Wittenboer 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).

  • Method of sealing adjoining parts of an evacuated vessel with solder glass
    Patent number: 3942993
    Abstract: Parts of an evacuated glass vessel are joined by a noncrystallizing solder glass having a coefficient of thermal expansion which is higher than that of the surfaces to be sealed and which contains particles of glass which reduces the coefficient of thermal expansion without increasing the soldering temperature, e.g. a boro-silicate, aluminosilicate or quartz glass having a thermal coefficient of expansion smaller than 40 .times. 10.sup..sup.-7.
    Type: Grant
    Filed: February 22, 1973
    Date of Patent: March 9, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Coenraad Maria La Grouw, Cornelus Wilhelmus Theresia Van Den Wittenboer, Hendrik Jan Hubers