Patents by Inventor Shuzou Watanabe

Shuzou Watanabe 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).

  • Evaporation vessel for use in vacuum evaporation
    Patent number: 4112290
    Abstract: An evaporation vessel for vacuum evaporation of electroconductive ceramic boat for use in the vacuum evaporation of a metallic or non-metallic substance by virtue of resistance heating, wherein the surface of the adjoining portion on the both sides of a cavity is lower than the top of the outside wall of the cavity.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: September 5, 1978
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yukihiko Nakajima, Shuzou Watanabe, Akira Miyai, Masaji Ishii