Patents by Inventor Toshiyuki Nakazima

Toshiyuki Nakazima 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 manufacture of silicon carbide
    Patent number: 4410502
    Abstract: Silicon carbide of improved quality is obtained by using a liquid silicic acid or modified liquid silicic acid as a silicic substance and carbon in a powdered form, a precursor of carbon in a powdered form, or a precursor of carbon in the form of a solution as a carbonaceous substance, and thermally treating these raw materials in a non-oxidative atmosphere. The silicon carbide thus produced is finely divided and in high-purity and suitable for use as raw material for the production of high-strength sintered articles.
    Type: Grant
    Filed: November 13, 1981
    Date of Patent: October 18, 1983
    Assignee: Asahi-Dow Limited
    Inventors: Masami Yamaguchi, Toshiyuki Nakazima, Yoshiro Tajitsu, Yoshiharu Kitahama, Isamu Iwami