Patents by Inventor Aiba, Yoshiro

Aiba, Yoshiro 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 a zirconia refractory body and a product produced by the process
    Patent number: 4789651
    Abstract: A high mechanical strength of zirconia refractory body can be provided by a process for producing the refractory body made of at least partially stabilized zirconia and having a predetermined shape comprising:mixing fine particles of zirconia belonging to a monoclinic system, fine particles of stabilizer composed of at least one substance selected from a group consisting essentially of MgO, CaO and Y.sub.2 O.sub.3 and a binder;granulating the resulting mixture to form granulated particles;shaping the granulated mixture into a predetermined form; andfiring the shaped mass thus formed in such a condition as to cause sintering of the zirconia particles and stabilization of zirconia simultaneously.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: December 6, 1988
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Sugie, Masuo, Kurihara, Koji, Aiba, Yoshiro, Maeda, Toshiaki