Patents by Inventor Valery A. Zykov

Valery A. Zykov 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 of producing a complex mineral fertilizer
    Patent number: 4246019
    Abstract: A method of producing a complex mineral fertilizer is disclosed, comprising the steps of decomposing polyhalite at a temperature not exceeding 110.degree. C. in the presence of dilute nitric acid, neutralizing the obtained suspension with a substance selected from the group consisting of calcium carbonate, calcium hydroxide and calcium oxide, and separating the resultant product.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: January 20, 1981
    Inventors: Igor D. Sokolov, Jury S. Safrygin, Alexandr V. Muraviev, Nina K. Andreeva, Valery A. Zykov