Patents Examined by Craig Wurzel
  • Glass to metal sealing process
    Patent number: 4888037
    Abstract: A single-step process is disclosed for hermetically sealing a glass to a metal having similar coefficients of thermal expansion without carrying out the conventional pretreatment steps of decarburization and oxidization by heating to at least the melting point of the glass in an atmosphere containing from about 0.5 to 2.5 volume percent of water vapor, 0 to about 5 volume percent of hydrogen gas and the balance an inert gas, such as nitrogen.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: December 19, 1989
    Assignee: The BOC Group, Inc.
    Inventors: Nikhiles Bandyopadhyay, Satish S. Tamhankar, Mark J. Kirschner