Patents by Inventor Vasily D. Koshevar

Vasily D. Koshevar 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).

  • Photographic material
    Patent number: 4546063
    Abstract: A photographic material comprises acid esters of cellulose or copolymers of acid esters of cellulose and synthetic comonomers.The invention may be used in the photographic industry for producing line and half-tone images on paper, films and cloth. Moreover, the proposed photographic material may be used for direct recording of ultraviolet radiation.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: October 8, 1985
    Inventors: Igor N. Ermolenko, Vasily D. Koshevar, Viktor S. Nedzvetsky, Galina N. Savastenko, Valentina M. Siderko, Fedor N. Kaputsky, Valentina V. Komar, Juzefa I. Nadievskaya