Patents Assigned to RKC Corporation
  • Electroplating from a thiosulfate-containing medium without sulfiding
    Patent number: 4268619
    Abstract: The useful life and stability of fixer used in the processing of film through developer, fixer and wash stages is significantly improved by withdrawing used fixer, electrolytically removing silver therefrom, stabilizing the withdrawn fixer by adjusting its pH to a substantially constant value and recirculating thus-treated used fixer for further film processing.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: May 19, 1981
    Assignee: RKC Corporation
    Inventor: Kenneth M. Dunagan
  • Electroplating cell
    Patent number: 4169033
    Abstract: An improved electroplating cell comprising a cathode coaxially aligned with an anode in a solution containing metal ions, the cathode having a plurality of vane sections extending substantially radially therefrom at spaced intervals along the length thereof.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: September 25, 1979
    Assignee: RKC Corporation
    Inventor: Kenneth M. Dunagan