Patents by Inventor David Mendelevich Gelfgat

David Mendelevich Gelfgat 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).

  • Film thermoelement
    Patent number: 4049469
    Abstract: A film thermoelement wherein each branch thereof comprises a film of a semiconductor material contacting on one of its sides a hot thermal bus and on the other of its sides a cold thermal bus. The contact between the thermal buses and the film is maintained through separate strips of a heat-conducting material displaced with respect to each other on the opposite sides of the film. The gaps between the contact strips may be filled with an inert gas.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: September 20, 1977
    Inventors: Nikolai Vasilievich Kolomoets, Zinovy Moiseevich Dashevsky, Vladimir Isaakovich Granovsky, Igor Aronovich Shmidt, David Mendelevich Gelfgat