Patents by Inventor Masanobu Ohyama

Masanobu Ohyama 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).

  • Method for manufacturing gallium phosphide
    Patent number: 4026994
    Abstract: A method is directed to manufacturing gallium phosphide by reducing gallium orthophosphate in a reducing atmosphere while heating it. In reduction, phosphorus, gallium phosphide and/or phosphine is added as an additive to gallium orthophosphate.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: May 31, 1977
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Makoto Tashiro, Keijiro Hirahara, Akihiro Yahata, Masanobu Ohyama