Patents by Inventor Raymond A. Frates

Raymond A. Frates 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).

  • Duplex glass preforms for hermetic glass-to-metal compression sealing
    Patent number: 4788382
    Abstract: A duplex glass preform for forming hermetic glass-to-metal seals of the compression type. The duplex glass preform comprises a glass infrasturcture or matrix having at least one end thereof modified by the selective distribution therein of ceramic particles. The ceramic particles are selectively distributed to form a ceramic density gradient having the largest concentration of ceramic particles at the surface and gradually decreasing with depth. The duplex glass preform of the present invention has utility in forming glass-to-metal compression seals in hybrid metal packages containing microcircuit chips. The duplex glass preform may be used in the normal insulative fashion or as a conductive member.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: November 29, 1988
    Assignee: Isotronics, Inc.
    Inventors: John E. Ahearn, Raymond A. Frates, Dennis Girard, Richard A. Koepke, Robert M. O'Hern, James K. Schmidt, C. Dodd Manon
  • Duplex glass preforms for hermetic glass-to-metal sealing
    Patent number: 4716082
    Abstract: A duplex glass preform for forming hermetic glass-to-metal seals. The duplex glass preform comprises a glass infrastructure or matrix having at least one end thereof modified by the selective distribution therein of ceramic particles. The ceramic particles are selectively distributed to form a ceramic density gradient having the largest concentration of ceramic particles at the surface and gradually decreasing with depth. The duplex glass preform of the present invention has utility in forming glass-to-metal seals in hybrid metal packages containing microcircuit chips.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: December 29, 1987
    Assignee: Isotronics, Inc.
    Inventors: John E. Ahearn, Raymond A. Frates, Dennis Girard, Richard A. Koepke, James K. Schmidt, C. Dodd Manon