Patents by Inventor Grigory D. Duply

Grigory D. Duply 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).

  • Method for applying protective coating to metal pipes
    Patent number: 4197336
    Abstract: A method comprises diffusion metal coating of pipes carried out in a vacuum chamber which contains metal evaporators. Prior to coating process a metal is fed into the interior of each pipe with the melting temperature thereof being substantially below that of the pipe metal. The metal coating of pipes is effected at a temperature above the melting temperature of the metal disposed within the pipes which are continuously rotating about their axes while axially advancing through the metal evaporator.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: April 8, 1980
    Assignee: Ukrainsky Nauchno-Issledovatelsky Institut Spetsialnykh Stalei, Splavov I Ferrosplavov
    Inventors: Vladimir I. Savchenko, Anatoly I. Plyshevsky, Evgeny P. Ponomarenko, Grigory D. Duply, Georgy I. Khaustov, Iosif J. Korobochkin, Olga S. Vilyams, Jury K. Belov