Patents by Inventor Sergei Nikolaevich Melbard

Sergei Nikolaevich Melbard 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).

  • Thermionic heater cathode assembly of electron-beam gun
    Patent number: 4097714
    Abstract: A thermionic heater cathode assembly of an electron-beam gun, comprising a disc cathode made of a highly-emissive material and disposed near a U-shaped ribbon filament with a thermionic portion and current-carrying sections arranged in parallel, wherein the ends of said ribbon filament sections to be connected to a holder are arranged in a plane normal to the ends of the same sections, adjoining the thermionic portion of said ribbon filament.
    Type: Grant
    Filed: May 10, 1977
    Date of Patent: June 27, 1978
    Inventors: Igor Vladimirovich Shergov, Sergei Nikolaevich Melbard