Patents by Inventor Amy Ku

Amy Ku 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).

  • Reverse current gold etch
    Patent number: 6150279
    Abstract: A method and apparatus for gold etching in semiconductor circuit manufacturing. An environmentally safe etching solution is used in an electroplating device to etch gold from a semiconductor substrate. The etching solution is free of iodine and cyanide based compounds and preferably includes thiourea.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: November 21, 2000
    Inventor: Amy Ku