Patents by Inventor Ryuzo Yoshioka

Ryuzo Yoshioka 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).

  • Process for producing .beta.-silicon carbide fine powder
    Patent number: 4217335
    Abstract: A process for producing a .beta.-silicon carbide powder is disclosed wherein a ternary mixture of carbon, silicon and silica powders mixed in amounts falling within the region defined by the points O, P, Q and R in the FIGURE are reacted in an oxidizing atmosphere.
    Type: Grant
    Filed: June 14, 1979
    Date of Patent: August 12, 1980
    Assignee: Nippon Crucible Co., Ltd.
    Inventors: Tadao Sasaki, Isamu Komaru, Ryuzo Yoshioka