Patents by Inventor Toru Shiragami

Toru Shiragami 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).

  • Publication number: 20180147787
    Abstract: A method of producing a hermetic package includes forming a first sealing material layer on a first glass substrate, and arranging a frame body having an opening on its top so that a bottom portion of the frame body and the first sealing material layer are in contact, followed by sealing the frame body and the first glass substrate with each other via the first sealing material layer. The method further includes forming a second sealing material layer on an upper edge portion of the frame body, housing, in the frame body, a member, and arranging a second glass substrate to be in contact with the second sealing material layer, followed by sealing the second glass substrate and the frame body with each other via the second sealing material layer by irradiating the second sealing material layer with laser light from a second glass substrate side.
    Type: Application
    Filed: May 16, 2016
    Publication date: May 31, 2018
    Inventors: Toru SHIRAGAMI, Hiroshi ARAKAWA
  • Publication number: 20180033951
    Abstract: A technical object of the present invention is to devise a method by which bonding strength between an element base and a sealing material layer can be increased without thermal degradation of a member to be housed inside, to thereby improve long-term reliability of a hermetic package. A method of producing a hermetic package of the present invention includes the steps of: preparing a ceramic base and forming a sealing material layer on the ceramic base; preparing a glass substrate and arranging the ceramic base and the glass substrate so that the glass substrate is brought into contact with the sealing material layer on the ceramic base; and irradiating the sealing material layer with laser light from a glass substrate side to seal the ceramic base and the glass substrate with each other through intermediation of the sealing material layer, to thereby provide a hermetic packages.
    Type: Application
    Filed: February 25, 2016
    Publication date: February 1, 2018
    Applicant: Nippon Electric Glass Co., Ltd.
    Inventor: Toru SHIRAGAMI
  • Patent number: 9708213
    Abstract: Provided is a sealing material that easily converts laser light to thermal energy, exhibits satisfactory fluidity, and is conducive to a reduction in its melting point. The sealing material includes 54.9 vol % to 99.9 vol % of glass powder, 0 vol % to 45 vol % of refractory filler powder, and 0.1 vol % to 10 vol % of a laser absorbing material, in which the glass powder includes as a glass composition, in terms of the following oxides in mass %, 70% to 90% of Bi2O3, 2% to 12% of B2O3, 1% to 15% of ZnO, 0.2% to 15% of CuO+Fe2O3, and 0.1% to 20% of MgO+CaO+SrO+BaO.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: July 18, 2017
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Toru Shiragami, Kentaro Ishihara
  • Patent number: 9469562
    Abstract: Provided is a glass substrate with a sealing material layer, including a sealing material layer formed by sintering a sealing material, in which: the sealing material includes at least inorganic powder; the inorganic powder includes glass powder and a refractory filler; the content of refractory filler in the inorganic powder is 10 to 35 vol %; and the sealing material layer has a surface roughness Ra of less than 0.5 ?m.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: October 18, 2016
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Noriaki Masuda, Toru Shiragami, Hiroshi Arakawa
  • Publication number: 20160236968
    Abstract: Provided is a sealing material that easily converts laser light to thermal energy, exhibits satisfactory fluidity, and is conducive to a reduction in its melting point. The sealing material includes 54.9 vol % to 99.9 vol % of glass powder, 0 vol % to 45 vol % of refractory filler powder, and 0.1 vol % to 10 vol % of a laser absorbing material, in which the glass powder includes as a glass composition, in terms of the following oxides in mass %, 70% to 90% of Bi2O3, 2% to 12% of B2O3, 1% to 15% of ZnO, 0.2% to 15% of CuO+Fe2O3, and 0.1% to 20% of MgO+CaO+SrO+BaO.
    Type: Application
    Filed: October 20, 2014
    Publication date: August 18, 2016
    Applicant: Nippon Electric Glass Co., Ltd.
    Inventors: Toru SHIRAGAMI, Kentaro ISHIHARA
  • Patent number: 9090498
    Abstract: Provided is a sealing material suitable for laser sealing, which enhances long-term reliability of an OLED display and the like. The sealing material comprises 80 to 99.7 mass % of an inorganic powder containing SnO-containing glass powder and 0.3 to 20 mass % of a pigment and is used for laser sealing.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: July 28, 2015
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Noriaki Masuda, Toru Shiragami, Hiroshi Arakawa, Hiroyuki Oshita
  • Publication number: 20140196502
    Abstract: Provided is a glass substrate with a sealing material layer, including a sealing material layer formed by sintering a sealing material, in which: the sealing material includes at least inorganic powder; the inorganic powder includes glass powder and a refractory filler; the content of refractory filler in the inorganic powder is 10 to 35 vol %; and the sealing material layer has a surface roughness Ra of less than 0.5 ?m.
    Type: Application
    Filed: July 27, 2012
    Publication date: July 17, 2014
    Inventors: Noriaki Masuda, Toru Shiragami, Hiroshi Arakawa
  • Publication number: 20130213852
    Abstract: Provided is an electrical element package, comprising an element substrate on which an electrical element is provided, a sealing substrate provided at a distance from a surface of the element substrate on a side of the electrical element so as to be opposed to the element substrate, and a glass frit for hermetically sealing a gap between the element substrate and the sealing substrate so as to surround the electrical element, wherein the electrical element package comprises a protective film for protecting an electrode from laser light applied in welding the glass frit, the protective film being provided between the element substrate and the glass frit.
    Type: Application
    Filed: September 30, 2011
    Publication date: August 22, 2013
    Inventors: Yasuo Yamazaki, Toru Shiragami, Noriaki Masuda, Takeshi Sakurai, Hiroki Yamazaki
  • Publication number: 20120325789
    Abstract: Provided is a sealing material suitable for laser sealing, which enhances long-term reliability of an OLED display and the like. The sealing material comprises 80 to 99.7 mass % of an inorganic powder containing SnO-containing glass powder and 0.3 to 20 mass % of a pigment and is used for laser sealing.
    Type: Application
    Filed: March 2, 2011
    Publication date: December 27, 2012
    Inventors: Noriaki Masuda, Toru Shiragami, Hiroshi Arakawa, Hiroyuki Oshita