Patents by Inventor Boris A. Nikiforov

Boris A. Nikiforov 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).

  • Electrode wire
    Patent number: 4999479
    Abstract: The invention relates to the field of welding. Disclosure is made of a wire comprising a metal body (1) having a longitudinal cavity (3) filled with a charge (2) comprising at least one constituent from the group consisting of alloying and slag-forming constituents.On the surface of the cavity (3) and the wire there is disposed a coat (4, 7) made up of at least two layers (5, 6 and 8, 9). Each of said layers (5, 6 and 8, 9) incorporates one constituent selected from the group consisting of alloying and slag-forming constituents. From 10 to 99 percent of the mass of the constituents in the layers (5, 6) of the coat (4) and in the layers (8, 9) of the coat (7) is disposed on the surface of the cavity (3), and the total area of the layers (5, 6) of the coat (4) and the layers (8, 9) of the coat (7) in cross section of the wire, incorporating the identical constituents, amounts to from 0.001 to 0.1 part of the area of the metal body (1).
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: March 12, 1991
    Inventors: Boris E. Paton, Nikolai M. Voropai, Boris A. Nikiforov, Georgy A. Schegolev, Gennady P. Logiiko, Vasily G. Mischanin