Patents Represented by Law Firm Joseph & Pudlon
  • Cyanide free bath for electrodeposition of silver
    Patent number: 3984292
    Abstract: The specification discloses an improvement in the electrodeposition of silver from an aqueous cyanide-free bath which comprises the use organic nitrogen containing compounds having at least two nitrogen atoms and having a molecular weight of at least 300, and a compound of sulfur or selenium in which the sulfur or selenium is in an oxidation state of minus one or minus two. The combination is used as an activator in the bath.
    Type: Grant
    Filed: January 23, 1975
    Date of Patent: October 5, 1976
    Assignee: Schering Aktiengesellschaft
    Inventor: Josif Culjkovic