Patents by Inventor Sergei V. Chekhovsky

Sergei V. Chekhovsky 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).

  • Acidproof lining material
    Patent number: 4452946
    Abstract: An acidproof lining material consisting of natural amorphous graphite, novolac and resol phenol-formaldehyde resin and a hardener, with the ratio of the components being as follows (in % by weight):______________________________________ natural amorphous graphite 70-80 novolac phenol-formaldehyde resin 9-22.5 hardener I-2.5 resol phenol-formaldehyde resin 5-15.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: June 5, 1984
    Assignee: Vsesojuzny Nauchno-Issledovatelsky Institut Nerudnykh Stroitelnykh Materialov I/Gidromekhanizatsii
    Inventors: Vladimir M. Tomilo, Stanislav A. Potapov, Nikolai G. Khudyakov, Svetlana M. Travnitskaya, Vladimir M. Kornienko, Viktor V. Dobroljubov, Sergei V. Chekhovsky, Galina V. Fedorenko, Valentina I. Grabylnikova