Patents by Inventor Ewald H. McCoy

Ewald H. McCoy 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).

  • Alkaline plating baths and electroplating process
    Patent number: 4417956
    Abstract: Cyanide-free plating baths for the electrodeposition of copper and zinc alloys comprise aqueous alkaline mixtures which contain copper and zinc ions and a chelating agent selected from glucoheptonic acid and its salts. Processes for electroplating using the bath and for removing the metal ions from the spent baths by pH adjustment are also disclosed.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: November 29, 1983
    Assignee: Electrochemical Products, Inc.
    Inventor: Ewald H. McCoy
  • Alkaline plating baths and electroplating process
    Patent number: 4389286
    Abstract: Cyanide-free plating baths for the electrodeposition of copper alloys comprise aqueous alkaline mixtures which contain copper and either lead or tin ions and a chelating agent selected from glucoheptonic acid and its salts. Processes for electroplating using the bath and for removing the metal ions from the spent baths by pH adjustment are also disclosed.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: June 21, 1983
    Assignee: Electrochemical Products, Inc.
    Inventor: Ewald H. McCoy
  • Alkaline plating baths and electroplating process
    Patent number: 4356067
    Abstract: Cyanide-free plating baths for the electrodeposition of copper and zinc alloys comprise aqueous alkaline mixtures which contain copper and zinc ions and a chelating agent selected from glucoheptonic acid and its salts. Processes for electroplating using the bath and for removing the metal ions from the spent baths by pH adjustment are also disclosed.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: October 26, 1982
    Assignee: Electrochemical Products, Inc.
    Inventor: Ewald H. McCoy