Patents by Inventor Galina G. Leonova

Galina G. Leonova 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).

  • Process for obtaining half-tone picture of irregular structure
    Patent number: 4180402
    Abstract: A process for obtaining a half-tone picture of irregular structure consists in exposing a coarse-grained silver-halide material with an average linear size of silver halide micro-crystals of 4 to 6 microns, developing the exposed material in an infectious developer, printing the resulting picture on a high-contract photosensitive material, and developing the exposed high-contract photosensitive material. The process permits obtaining a high-quality half-tone picture with the optical densities of the original being reproducible within the range of more than 1.0. The process is simple and easily controllable.
    Type: Grant
    Filed: November 28, 1977
    Date of Patent: December 25, 1979
    Assignee: Vsesojuzny Gosudarstvenny Nauchno-Issiedovatelsky I Proekthyinstitut Khimo-Forograficheskoi Promyshlennosti
    Inventors: Jury S. Andreev, Olga V. Pyasetskaya, Galina G. Leonova