Patents by Inventor Syozo Sasa

Syozo Sasa 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).

  • Thermal pen tip
    Patent number: 4367395
    Abstract: A thermal pen tip comprising a heat reserve layer formed on an insulating substrate; a resistance layer for heating formed on said heat reserve layer; and a protective layer formed on said resistance layer, wherein said heat reserve layer has a convex top having a curvature and a flat surface on said convex top, so as to have a size corresponding substantially to a width of a line and said resistance layer for heating is formed on said flat surface of said heat reserve layer.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: January 4, 1983
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Yukio Asakawa, Katsuto Nagano, Syozo Sasa
  • Method for the epitaxial growth of boron phosphorous semiconductors
    Patent number: 4293370
    Abstract: The epitaxial growth of boron-phosphorous semiconductors can be accomplished by chemically reacting the gas materials diborane and phosphorous trichloride. The preferable temperature of the substrate in 880.degree. C.-1,110.degree. C. and the preferable ratio of the phosphorous trichloride to diborane in mol is 2-200. Use is made of a composite substrate.
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: October 6, 1981
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Katsuto Nagano, Kazuhiko Ihaya, Syozo Sasa, Takeshi Nakada