Patents by Inventor Sumihito Sago

Sumihito Sago 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).

  • Ceramic product and ceramic member bonding method
    Patent number: 8431227
    Abstract: The ceramic product provided by the present invention is provided with at least two ceramic members bonded to each other, and the bond parts between these ceramic members bonded to each other are formed from glass having leucite crystals precipitated within the glass matrix.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: April 30, 2013
    Assignee: Noritake Co., Ltd
    Inventors: Yosuke Takahashi, Sumihito Sago, Seiji Yamada, Masayoshi Hirano
  • CERAMIC PRODUCT AND CERAMIC MEMBER BONDING METHOD
    Publication number: 20110209618
    Abstract: The ceramic product provided by the present invention is provided with at least two ceramic members bonded to each other, and the bond parts between these ceramic members bonded to each other are formed from glass having leucite crystals precipitated within the glass matrix.
    Type: Application
    Filed: May 12, 2011
    Publication date: September 1, 2011
    Applicant: NORITAKE CO., LTD.
    Inventors: Yosuke Takahashi, Sumihito Sago, Seiji Yamada, Masayoshi Hirano
  • Ceramic product and ceramic member bonding method
    Patent number: 7968200
    Abstract: The ceramic product provided by the present invention is provided with at least two ceramic members bonded to each other, and the bond parts between these ceramic members bonded to each other are formed from glass having leucite crystals precipitated within the glass matrix.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: June 28, 2011
    Assignee: Noritake Co., Ltd
    Inventors: Yosuke Takahashi, Sumihito Sago, Seiji Yamada, Masayoshi Hirano
  • CERAMIC PRODUCT AND CERAMIC MEMBER BONDING METHOD
    Publication number: 20090214923
    Abstract: The ceramic product provided by the present invention is provided with at least two ceramic members bonded to each other, and the bond parts between these ceramic members bonded to each other are formed from glass having leucite crystals precipitated within the glass matrix.
    Type: Application
    Filed: February 25, 2009
    Publication date: August 27, 2009
    Applicant: Noritake Co., Ltd.
    Inventors: Yosuke Takahashi, Sumihito Sago, Seiji Yamada, Masayoshi Hirano
  • 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
  • Method of producing fine particles of metal oxide
    Patent number: 6780393
    Abstract: A method of producing fine particles of an oxide of a metal, comprising the steps of: preparing an acidic solution which contains ions of the metal; precipitating fine particles of a hydroxide of the metal by adding an alkaline solution to the acidic solution; collecting the fine particles of the hydroxide of the metal precipitated in a mixed solution of the acidic solution and the alkaline solution; mixing fine particles of a carbon with the collected fine particles of the hydroxide of the metal; and heat-treating a mixture of the fine particles of the hydroxide of the metal and the fine particles of the carbon at a predetermined temperature in a non-reducing atmosphere, whereby the fine particles of the oxide of the metal are produced.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: August 24, 2004
    Assignees: National Institute of Advanced Industrial Science and Technology, Noritake Co., Limited
    Inventors: Norimitsu Murayama, Woosuck Shin, Sumihito Sago, Makiko Hayashi
  • Method of producing fine particles of metal oxide
    Publication number: 20020119093
    Abstract: A method of producing fine particles of an oxide of a metal, comprising the steps of: preparing an acidic solution which contains ions of the metal; precipitating fine particles of a hydroxide of the metal by adding an alkaline solution to the acidic solution; collecting the fine particles of the hydroxide of the metal precipitated in a mixed solution of the acidic solution and the alkaline solution; mixing fine particles of a carbon with the collected fine particles of the hydroxide of the metal; and heat-treating a mixture of the fine particles of the hydroxide of the metal and the fine particles of the carbon at a predetermined temperature in a non-reducing atmosphere, whereby the fine particles of the oxide of the metal are produced.
    Type: Application
    Filed: December 14, 2001
    Publication date: August 29, 2002
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Norimitsu Murayama, Woosuck Shin, Sumihito Sago, Makiko Hayashi