Patents by Inventor Yoshitsuga Nishi

Yoshitsuga Nishi 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 and apparatus for producing non-oxide compounds
    Patent number: 4818511
    Abstract: A process for producing non-oxide compounds such as silicon nitride and silicon carbide by using a multi-stage apparatus constructed of a raw material drier section, a reactor section including a multiplicity of reaction vessels, and a non-oxidizing gas feeder section, is disclosed. The sections are arranged serially in the vertical direction. Raw materials are reacted with one another while fluidizing or bubbling by a hot non-oxidizing gas (argon or nitrogen) occurs in the raw material drier section and reaction vessels.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: April 4, 1989
    Assignee: Nihon Cement Co., Ltd.
    Inventors: Yoshitsuga Nishi, Kenji Kawasaki, Mutuo Hayashi, Chitake Yamagishi