Patents by Inventor Setsuro Ito

Setsuro Ito 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).

  • Optical amplifying glass fiber
    Patent number: 6560392
    Abstract: An optical amplifying glass fiber comprising a core glass and a clad glass, wherein a relation of: 0.0005≦(n1−n2)/n1≦0.1 where n1 and n2 are refractive indices of the core glass and the clad glass, respectively, is satisfied, the fiber has a length of at most 25 cm, the core glass contains Er, and the wavelength width wherein a gain is obtainable with light having a wavelength of from 1.50 to 1.59 &mgr;m, is at least 30 nm.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: May 6, 2003
    Assignee: Asahi Glass Company, Limited
    Inventors: Naoki Sugimoto, Yutaka Kuroiwa, Setsuro Ito
  • Optical amplifying glass and method for its production
    Publication number: 20030064878
    Abstract: An optical amplifying glass having Er doped in an amount of from 0.01 to 10% as represented by mass percentage to a matrix glass comprising, by mol %, BiO2: 20 to 80, B2O3+SiO2: 5 to 75, Ga2O3+WO3+TeO2: 0.1 to 35, Al2O3≦10, GeO2≦30, TiO2≦30, and SnO2≦30, and containing no CeO2.
    Type: Application
    Filed: July 18, 2002
    Publication date: April 3, 2003
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Naoki Sugimoto, Setsuro Ito
  • Optical amplifying glass fiber
    Publication number: 20030007759
    Abstract: An optical amplifying glass fiber comprising a core glass and a clad glass, wherein a relation of:
    Type: Application
    Filed: April 24, 2001
    Publication date: January 9, 2003
    Applicant: Asahi Glass Company, Limited
    Inventors: Naoki Sugimoto, Yutaka Kuroiwa, Setsuro Ito
  • Optical amplifying glass
    Publication number: 20020041436
    Abstract: An optical amplifying glass comprising a matrix glass and from 0.001 to 10% by mass percentage of Tm doped to the matrix glass, wherein the matrix glass contains from 15 to 80 mol % of Bi2O3 and further contains at least one component selected from the group consisting of SiO2, B2O3 and GeO2.
    Type: Application
    Filed: August 8, 2001
    Publication date: April 11, 2002
    Applicant: Asahi Glass Company, Limited
    Inventors: Yuki Kondo, Setsuro Ito, Naoki Sugimoto, Tatsuo Nagashima, Setsuhisa Tanabe
  • Optical amplifier glass
    Publication number: 20010044369
    Abstract: An optical amplifier glass comprising a matrix glass containing Bi2O3 and at least one of Al2O3 and Ga2O3, and Er doped to the matrix glass, wherein from 0.01 to 10% by mass percentage of Er is doped to the matrix glass which has a total content of Al2O3 and Ga2O3 of at least 0.1 mol %, a content of Bi2O3 of at least 20 mol %, a refractive index of at least 1.8 at a wavelength of 1.55 &mgr;m, a glass transition temperature of at least 360° C. and an optical basicity of at most 0.49.
    Type: Application
    Filed: January 23, 2001
    Publication date: November 22, 2001
    Inventors: Naoki Sugimoto, Setsuro Ito, Setsuhisa Tanabe
  • Plasma display panel
    Patent number: 5714840
    Abstract: A plasma display panel comprising mutually opposing substrates and barrier ribs formed between adjacent pixels of a display between the substrates, wherein the barrier ribs are made of a fired product of a glass ceramic composition consisting essentially of a glass powder of P.sub.2 O.sub.5 type glass and a low expansion ceramic powder.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: February 3, 1998
    Assignee: Asahi Glass Company Ltd.
    Inventors: Ryuichi Tanabe, Naoki Sugimoto, Setsuro Ito, Jiro Chiba
  • Glass composition for a substrate, and substrate for plasma display made thereof
    Patent number: 5599754
    Abstract: A glass composition for a substrate consisting essentially of from 52 to 62 wt % of SiO.sub.2, from 5 to 12 wt % of Al.sub.2 O.sub.3, from 0 to 4 wt % of MgO, from 3 to 5.5 wt % of CaO, from 6 to 9 wt % of SrO, from 0 to 13 wt % of BaO, from 17 to 27 wt % of MgO+CaO+SrO+BaO, from 7 to 14 wt % of Li.sub.2 O+Na.sub.2 O+K.sub.2 O, from 0.2 to 6 wt % of ZrO.sub.2, and from 0 to 0.6 wt % of SO.sub.3.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: February 4, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Kei Maeda, Yasumasa Nakao, Hideki Kushitani, Setsuro Ito
  • Glass-ceramic article and method for its production
    Patent number: 4985375
    Abstract: A method for producing a glass-ceramic article, which comprises crystallizing a glass article consisting essentially of from 40 to 60% by weight of SiO.sub.2, from 13 to 19% by weight of Al.sub.2 O.sub.3, from 0 to 6% by weight of B.sub.2 O.sub.3, from 8 to 16% by weight of MgO, from 2 to 6% by weight of CaO, from 3 to 9% by weight of ZnO, from 5 to 12% by weight of TiO.sub.2, from 0 to 3% by weight of Li.sub.2 O+Na.sub.2 O+K.sub.2 O, from 0 to 3% by weight of P.sub.2 O.sub.5 and from 0 to 2% by weight of ZrO.sub.2.
    Type: Grant
    Filed: May 4, 1988
    Date of Patent: January 15, 1991
    Assignee: Asahi Glass Company Ltd.
    Inventors: Chikao Tanaka, Setsuro Ito, Yasumasa Nakao, Kei Maeda