Patents by Inventor Felix A. Gimelfarb

Felix A. Gimelfarb 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).

  • Fabrication of a heterogeneous semiconductor structure with composition gradient utilizing a gas phase transfer process
    Patent number: 4171996
    Abstract: A method for producing a heterogeneous semiconductor structure with a composition gradient in which a semiconductor material is transferred through the gaseous phase onto the substrate from a source comprising the two AB and AC components and including a number of parallel strips, each of said strips having a constant ratio between the AB and AC components. At first, the source is gradually brought under the substrate at a speed chosen within the range of 100 cm per hour to 0.1 cm per hour, bringing first the strip of the source, which has a maximum content of the AB component. As all the strips have been brought under the substrate, the source is stopped for a period of time required for the formation of the main layer of a required thickness.
    Type: Grant
    Filed: August 1, 1978
    Date of Patent: October 23, 1979
    Assignee: Gosudarstvenny Nauchno-Issledovatelsky i Proektny Institut Redkonetallicheskoi Promyshlennosti "Giredmet"
    Inventors: Vadim N. Maslov, Oleg E. Korobov, Alla N. Lupacheva, Alexandr N. Vlasov, Viktor V. Myasoedov, Ellin P. Bochkarev, Felix A. Gimelfarb, Izidor K. Bronshtein, Natalya I. Lukicheva, Evgeny V. Sinitsyn, Jury V. Sokurenko, Elena S. Jurova, Elena M. Kistova, Marina A. Konstantinova, Veniamin M. Samaginov