Patents Examined by Eugene R. Laoche
  • Electronic device and a manufacturing method for the same
    Patent number: 5057900
    Abstract: A method for manufacturing a lead frame comprises the steps of covering, with a cover film, a die to which an electronic device is attached and a conducting section of a lead section to be electrically connected to the die, covering the whole of the die and lead section and the cover film with an inorganic protective film, and removing the cover film and the protective film formed over the cover film to partly expose the die and the conducting section for electric connection.
    Type: Grant
    Filed: October 5, 1989
    Date of Patent: October 15, 1991
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Laser-triggered vacuum switch
    Patent number: 4978893
    Abstract: A laser-triggered vacuum switch has a material such as a alkali metal halide on the cathode electrode for thermally activated field emission of electrons and ions upon interaction with a laser beam, the material being in contact with the cathode with a surface facing the discharge gap. The material is preferably a mixture of KCl and Ti powders. The laser may either shine directly on the material, preferably through a hole in the anode, or be directed to the material over a fiber optic cable.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: December 18, 1990
    Assignee: The United States of American as epresented by the United States the Department of Energy
    Inventors: Paul J. Brannon, Donald F. Cowgill