Patents by Inventor Hillel Kellerman

Hillel Kellerman 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).

  • Low loss, compression, hermetic glass-to-metal-seal and method
    Patent number: 4587144
    Abstract: Glass-to-metal hermetic seal of the compression type in which a central metal eyelet is sealed to a central conductor, the eyelet being bondable to and having a coefficient of expansion characteristic compatible with glass in which the eyelet is made non-ferromagnetic to eliminate unwanted induction heating and losses in pulsatory current carrying operation. The method of forming the seal is disclosed.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: May 6, 1986
    Inventors: Hillel Kellerman, David Kellerman, Leonard J. Box