Patents by Inventor Tatsuhiko Hirata

Tatsuhiko Hirata 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 dental prosthesis and kit for use for therein
    Publication number: 20060261503
    Abstract: A method of manufacturing a dental prosthesis, including: (a) a step of preparing a substrate of the dental prosthesis that is constituted by a dental molding material; (b) a step of forming a back coating layer on at least a part of a surface of the substrate, by using a first porcelain that is constituted principally by ceramic; (c) a step of forming a casting mold such that the substrate is disposed in the casting mold and such that a void is provided on a surface of the back coating layer; and (d) a step of forming a cast coating layer on at least a part of a surface of the back coating layer, by pouring a second porcelain into the void at a casting temperature. The second porcelain is constituted principally by ceramic whose composition is different from that of the ceramic of the first porcelain that viscosity of the second porcelain at the casting temperature is lower than that of the first porcelain.
    Type: Application
    Filed: July 13, 2004
    Publication date: November 23, 2006
    Applicant: NORITAKE CO., LIMITED
    Inventors: Sumihito Sago, Toshio Sakakibara, Tatsuhiko Hirata, Atsushi Matsumoto