Patents Assigned to VMEI "LENIN" -- NIS Research Institution
  • Electrolytic process for silver oxidation
    Patent number: 4048025
    Abstract: A process for oxidation of silver and silver-plated articles having a violet or dark red decorative corrosion resistant coating by using an alternating current and as the electrolyte, a cupric chloride solution of concentration of 5 to 15 g/l.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: September 13, 1977
    Assignee: VMEI "LENIN" -- NIS Research Institution
    Inventors: Dimiter Panayotov Nenov, Verginia Ilieva Danova