Patents by Inventor Kiyoyuki Okunaga

Kiyoyuki Okunaga 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).

  • Glass tube for metal sealing and glass for metal sealing
    Patent number: 11377385
    Abstract: A glass tube for sealing a metal includes a glass that contains, in terms of mass %, 50% or more of SiO2+B2O3, 0% to 10% of Al2O3, 3% to 20% of RO (R is an alkaline earth metal), and 11% to 22% of R?2O (R? is an alkali metal), and that has 10 ?l/g or less of an amount of CO2 emitted when heated from a room temperature to 1100° C.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 5, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tatsuya Goto, Kakumi Shiraishi, Kiyoyuki Okunaga, Koichi Hashimoto
  • Glass tube for metal sealing and glass for metal sealing
    Patent number: 10974988
    Abstract: A glass tube for sealing a metal includes a glass that contains, in terms of mass %, 50% or more of SiO2+B2O3, 0% to 10% of Al2O3, 3% to 20% of RO (R is an alkaline earth metal), and 11% to 22% of R?2O (R? is an alkali metal), and that has 10 ?l/g or less of an amount of CO2 emitted when heated from a room temperature to 1100° C.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 13, 2021
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tatsuya Goto, Kakumi Shiraishi, Kiyoyuki Okunaga, Koichi Hashimoto
  • GLASS TUBE FOR METAL SEALING AND GLASS FOR METAL SEALING
    Publication number: 20190152837
    Abstract: A glass tube for sealing a metal includes a glass that contains, in terms of mass %, 50% or more of SiO2+B2O3, 0% to 10% of Al2O3, 3% to 20% of RO (R is an alkali-earth metal), and 11% to 22% of R?2O (R? is an alkali metal), and that has 10 ?l/g or less of an amount of CO2 emitted when heated from a room temperature to 1100° C.
    Type: Application
    Filed: April 13, 2017
    Publication date: May 23, 2019
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tatsuya GOTO, Kakumi SHIRAISHI, Kiyoyuki OKUNAGA, Koichi HASHIMOTO
  • Barrier ribs material for a plasma display panel
    Patent number: 6737373
    Abstract: In a PDP barrier ribs material comprising glass powder and silica-based filler powder, the silica-based filler powder comprises fused silica powder and &agr;-quartz powder. At least a part of the silica-based filler powder is spherical filler powder. The remaining part of the silica-based filler powder may be aspherical filler powder. In this case, the ratio of the spherical filler powder and the aspherical filler powder may be 30:70 to 100:0 in mass ratio.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: May 18, 2004
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Kiyoyuki Okunaga, Yoshirou Kitamura, Tatsuya Gotou, Masahiko Ohji, Kazuo Hadano
  • Barrier ribs material for a plasma display panel
    Publication number: 20030073564
    Abstract: In a PDP barrier ribs material comprising glass powder and silica-based filler powder, the silica-based filler powder comprises fused silica powder and &agr;-quartz powder. At least a part of the silica-based filler powder is spherical filler powder. The remaining part of the silica-based filler powder may be aspherical filler powder. In this case, the ratio of the spherical filler powder and the aspherical filler powder may be 30:70 to 100:0 in mass ratio.
    Type: Application
    Filed: June 3, 2002
    Publication date: April 17, 2003
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kiyoyuki Okunaga, Yoshirou Kitamura, Tatsuya Gotou, Masahiko Ohji, Kazuo Hadano
  • Biocompatible glass ceramics
    Patent number: 5034353
    Abstract: A high-mechanical strength biocompatible crystallized glass essentially comprises both crystallines consisting of tetrasilicic fluorine mica series and calcium phosphate series. The crystallized glass has substantially non-sodium oxide and useful in a dental medical care, as repairing material of tooth.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: July 23, 1991
    Assignee: Nippon Electric Glass Co. Ltd.
    Inventors: Takehiro Shibuya, Akira Matsui, Yoshinori Morita, Kiyoyuki Okunaga, Masayuki Ninomiya