Patents by Inventor Vladimir M. Dziomko

Vladimir M. Dziomko 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 preparing 2H-tetrazolium chloride and 2H-tetrazolium chloride hydrochloride
    Patent number: 4143049
    Abstract: A method for preparing 2H-tetrazolium chloride hydrochlorides having the general formula ##STR1## where R.sub.1 and R.sub.2 are H, OH, NO.sub.2, Cl, or OCH.sub.2 COOH, and n is from 0 to 3, and also di-2H-tetrazolium chloride hydrochloride having the formula ##STR2## wherein the corresponding formazans are oxidized with chlorine in a medium of a polar organic solvent at a temperature from -5.degree. to +20.degree. C.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: March 6, 1979
    Inventors: Vera M. Ostrovskaya, Olga T. Lushina, Vladimir M. Dziomko, Julia A. Davydovskaya