Patents by Inventor Jackson Chik-Yun Koo

Jackson Chik-Yun Koo 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).

  • Removal of thin films from substrates by laser induced explosion
    Patent number: 4081653
    Abstract: Selected portions of a thin film coating of metal are removed from an insulative substrate by directing a coherent beam of light energy from a laser at the coating, to heat the coating and cause the evaporation and entrapment of the substrate material at the coating-substrate interface. A positive pressure builds up at the interface resulting in an explosion which removes the coating material.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: March 28, 1978
    Assignee: Western Electric Co., Inc.
    Inventors: Jackson Chik-Yun Koo, Vincent Joseph Zaleckas