Patents by Inventor Yasuhiko Akao

Yasuhiko Akao 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).

  • Patent number: 11964904
    Abstract: To provide a glass substrate with an antireflection film, which employs glass having high refractive index and which has excellent strength, and an optical member comprising it. A glass substrate with an antireflection film, comprising a glass substrate which consists of glass having refractive index (nd) of from 1.68 to 2.00 and which has plate thickness of from 0.01 to 2 mm, and an antireflection film formed on at least one principal plane of the glass substrate.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: April 23, 2024
    Assignee: AGC INC.
    Inventors: Yasuhiko Akao, Teruo Fujiwara
  • Patent number: 11817328
    Abstract: A laminate including a glass plate and a coating layer, wherein the coating layer includes one or more components selected from the group consisting of silicon nitride, titanium oxide, alumina, niobium oxide, zirconia, indium tin oxide, silicon oxide, magnesium fluoride, and calcium fluoride, wherein a ratio (dc/dg) of a thickness dc of the coating layer to a thickness dg of the glass plate is in a range of 0.05×10?3 to 1.2×10?3, and wherein a radius of curvature r1 of the laminate with negating of self-weight deflection is 10 m to 150 m.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: November 14, 2023
    Assignee: AGC INC.
    Inventors: Hirofumi Yamamoto, Yasuhiko Akao, Teruo Fujiwara, Nobuhiko Imajo
  • Publication number: 20230187227
    Abstract: A laminate including a glass plate and a coating layer, wherein the coating layer includes one or more components selected from the group consisting of silicon nitride, titanium oxide, alumina, niobium oxide, zirconia, indium tin oxide, silicon oxide, magnesium fluoride, and calcium fluoride, wherein a ratio (dc/dg) of a thickness dc of the coating layer to a thickness dg of the glass plate is in a range of 0.05×10?3 to 1.2×10?3, and wherein a radius of curvature r1 of the laminate with negating of self-weight deflection is 10 m to 150 m.
    Type: Application
    Filed: February 1, 2023
    Publication date: June 15, 2023
    Applicant: AGC Inc.
    Inventors: Hirofumi YAMAMOTO, Yasuhiko AKAO, Teruo FUJIWARA, Nobuhiko IMAJO
  • Patent number: 11594426
    Abstract: A laminate including a glass plate and a coating layer, wherein the coating layer includes one or more components selected from the group consisting of silicon nitride, titanium oxide, alumina, niobium oxide, zirconia, indium tin oxide, silicon oxide, magnesium fluoride, and calcium fluoride, wherein a ratio (dc/dg) of a thickness dc of the coating layer to a thickness dg of the glass plate is in a range of 0.05×10?3 to 1.2×10?3, and wherein a radius of curvature r1 of the laminate with negating of self-weight deflection is 10 m to 150 m.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: February 28, 2023
    Assignee: AGC INC.
    Inventors: Hirofumi Yamamoto, Yasuhiko Akao, Teruo Fujiwara, Nobuhiko Imajo
  • Publication number: 20200346973
    Abstract: To provide a glass substrate with an antireflection film, which employs glass having high refractive index and which has excellent strength, and an optical member comprising it. A glass substrate with an antireflection film, comprising a glass substrate which consists of glass having refractive index (nd) of from 1.68 to 2.00 and which has plate thickness of from 0.01 to 2 mm, and an antireflection film formed on at least one principal plane of the glass substrate.
    Type: Application
    Filed: July 15, 2020
    Publication date: November 5, 2020
    Applicant: AGC Inc.
    Inventors: Yasuhiko AKAO, Teruo FUJIWARA
  • Publication number: 20200279756
    Abstract: A laminate including a glass plate and a coating layer, wherein the coating layer includes one or more components selected from the group consisting of silicon nitride, titanium oxide, alumina, niobium oxide, zirconia, indium tin oxide, silicon oxide, magnesium fluoride, and calcium fluoride, wherein a ratio (dc/dg) of a thickness dc of the coating layer to a thickness dg of the glass plate is in a range of 0.05×10?3 to 1.2×10?3, and wherein a radius of curvature r1 of the laminate with negating of self-weight deflection is 10 m to 150 m.
    Type: Application
    Filed: May 21, 2020
    Publication date: September 3, 2020
    Applicant: AGC Inc.
    Inventors: Hirofumi YAMAMOTO, Yasuhiko AKAO, Teruo FUJIWARA, Nobuhiko IMAJO
  • Publication number: 20140234635
    Abstract: To provide an antifouling film-coated substrate, which has a fluorinated organic silicon compound coating film and which is excellent in the antifouling properties as it has water repellency, oil repellency, etc. and also excellent in the abrasion resistance so that deterioration in the antifouling properties is prevented against repeated wiping operations. The antifouling film-coated substrate 3 comprises a transparent substrate 1 having a film-forming surface 1a exposed to at least a moisture-containing atmosphere, and a fluorinated organic silicon compound coating film 2 formed on the film-forming surface 1a of the transparent substrate 1 by a dry-mode method.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 21, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yasuhiko AKAO, Gousuke Yoshida
  • Patent number: 8357437
    Abstract: The present invention relates to a light-shielding film-attached glass substrate including: a glass substrate; and a light-shielding film having a multilayer structure and being formed on the glass substrate, in which the light-shielding film having a multilayer structure includes: a first chromium oxynitride film (CrOx1Ny1); and a second chromium oxynitride film (CrOx2Ny2), each satisfying the following conditions and being laminated in this order from the glass substrate side: 0.15<x1<0.5, 0.1<y1<0.35, 0.4<x1+y1<0.65, 0.03<x2<0.15, and 0.09<y2<0.25.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: January 22, 2013
    Assignee: Asahi Glass Company, Limited
    Inventors: Teruo Fujiwara, Yasuhiko Akao, Takehiko Hiruma, Eiji Ichikura
  • Patent number: 8323856
    Abstract: The present invention provides a mask blank which comprises a substrate made of a synthetic quartz glass and a light-shielding film laminated on a surface of the substrate and is for use in a semiconductor device production technique employing an exposure light wavelength of 200 nm or shorter, wherein the mask blank has a birefringence, as measured at a wavelength of 193 nm, of 1 nm or less per substrate thickness. According to the present invention, mask blanks suitable for use in the immersion exposure technique and the polarized illumination technique are provided.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: December 4, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Shinya Kikugawa, Akira Takada, Satoru Takaki, Yosuke Sato, Yasuhiko Akao
  • Publication number: 20110236604
    Abstract: The present invention relates to a light-shielding film-attached glass substrate including: a glass substrate; and a light-shielding film having a multilayer structure and being formed on the glass substrate, in which the light-shielding film having a multilayer structure includes: a first chromium oxynitride film (CrOx1Ny1); and a second chromium oxynitride film (CrOx2Ny2), each satisfying the following conditions and being laminated in this order from the glass substrate side: 0.15<x1<0.5, 0.1<y1<0.35, 0.4<x1<0.65, 0.03<x2<0.15, and 0.09<y2<0.25.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 29, 2011
    Inventors: Teruo FUJIWARA, Yasuhiko Akao, Takehiko Hiruma, Eiji Ichikura
  • Publication number: 20110053059
    Abstract: The present invention provides a mask blank which comprises a substrate made of a synthetic quartz glass and a light-shielding film laminated on a surface of the substrate and is for use in a semiconductor device production technique employing an exposure light wavelength of 200 nm or shorter, wherein the mask blank has a birefringence, as measured at a wavelength of 193 nm, of 1 nm or less per substrate thickness. According to the present invention, mask blanks suitable for use in the immersion exposure technique and the polarized illumination technique are provided.
    Type: Application
    Filed: November 8, 2010
    Publication date: March 3, 2011
    Applicant: ASAHI GLASS CO., LTD.
    Inventors: Shinya Kikugawa, Akira Takada, Satoru Takaki, Yosuke Sato, Yasuhiko Akao
  • Publication number: 20080032213
    Abstract: The present invention provides a mask blank which comprises a substrate made of a synthetic quartz glass and a light-shielding film laminated on a surface of the substrate and is for use in a semiconductor device production technique employing an exposure light wavelength of 200 nm or shorter, wherein the mask blank has a birefringence, as measured at a wavelength of 193 nm, of 1 nm or less per substrate thickness. According to the present invention, mask blanks suitable for use in the immersion exposure technique and the polarized illumination technique are provided.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 7, 2008
    Applicant: ASAHI GLASS CO., LTD.
    Inventors: Shinya KIKUGAWA, Akira Takada, Satoru Takaki, Yosuke Sato, Yasuhiko Akao
  • Publication number: 20070241364
    Abstract: A substrate with transparent conductive film which is suitable for laser patterning and can be produced with high productivity, is provided. A substrate with transparent conductive film, which comprises a glass substrate and a transparent conductive film composed mainly of indium oxide, formed thereon, wherein the average domain diameter at the surface of the transparent conductive film is at most 150 nm. Such transparent conductive film is formed by sputtering at a substrate temperature of at most 250° C. during the film deposition.
    Type: Application
    Filed: June 21, 2007
    Publication date: October 18, 2007
    Applicant: ASAHI GLASS CO., LTD.
    Inventors: Yasuhiko Akao, Shotaro Hanada, Tateo Baba
  • Publication number: 20070036955
    Abstract: A laminate for forming a substrate with wires, comprising a conductive layer containing Al or an Al alloy as the major component, formed on a substrate and a capping layer containing a Ni—Mo alloy as the major component, formed on the conductive layer, a substrate with wires produced by etching the laminate to remove an unnecessary metal, and a method for producing the same.
    Type: Application
    Filed: September 7, 2006
    Publication date: February 15, 2007
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takehiko Hiruma, Yasuhiko Akao, Teruo Fujiwara, Nobuhiro Nakamura
  • Patent number: 7169461
    Abstract: A laminate for forming a substrate with wires, comprising a conductive layer containing Al or an Al alloy as the major component, formed on a substrate and a capping layer containing a Ni—Mo alloy as the major component, formed on the conductive layer, a substrate with wires produced by etching the laminate to remove an unnecessary metal, and a method for producing the same.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: January 30, 2007
    Assignee: Asahi Glass Company, Limited
    Inventors: Takehiko Hiruma, Yasuhiko Akao, Teruo Fujiwara, Nobuhiro Nakamura
  • Publication number: 20060270209
    Abstract: To provide a process for producing a transparent electrode comprising a tin oxide film which can readily be patterned, which can be realized at a low cost, and which has low resistivity and is excellent in transparency. A process for producing a transparent electrode having a patterned tin oxide film formed on a substrate, which comprises a step of forming a tin oxide film having light absorption characteristics on a substrate, a patterning step of removing part of the tin oxide film having light absorption characteristics, and a step of subjecting the patterned tin oxide film having light absorption characteristics to heat treatment to obtain a tin oxide film.
    Type: Application
    Filed: August 9, 2006
    Publication date: November 30, 2006
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Akira Mitsui, Hidefumi Odaka, Shigeaki Yonemori, Yasuhiko Akao
  • Publication number: 20050008894
    Abstract: A laminate for forming a substrate with wires, comprising a conductive layer containing Al or an Al alloy as the major component, formed on a substrate and a capping layer containing a Ni—Mo alloy as the major component, formed on the conductive layer, a substrate with wires produced by etching the laminate to remove an unnecessary metal, and a method for producing the same.
    Type: Application
    Filed: October 10, 2003
    Publication date: January 13, 2005
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takehiko Hiruma, Yasuhiko Akao, Teruo Fujiwara, Nobuhiro Nakamura
  • Patent number: 6383695
    Abstract: It is to provide a black matrix with which the etching rate during patterning can be controlled to be the same level as that of a metal chromium film, and which has adequate acid resistance, alkali resistance, heat resistance and water resistance in a color filter production process. At least one light shielding layer and a low-reflecting film as the case requires are formed on a transparent substrate, and the composition of the light shielding layer is substantially as follows: Ni 40 to 80 mass % Mo 10 to 59 mass % Ta + Nb 0.5 to 8 mass % Fe + Al 0.5 to 10 mass % Zr 0 to 7 mass %.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: May 7, 2002
    Assignee: Asahi Glass Company, Limited
    Inventors: Toshiyuki Uno, Yasuhiko Akao
  • Publication number: 20020034698
    Abstract: It is to provide a black matrix with which the etching rate during patterning can be controlled to be the same level as that of a metal chromium film, and which has adequate acid resistance, alkali resistance, heat resistance and water resistance in a color filter production process.
    Type: Application
    Filed: July 24, 2001
    Publication date: March 21, 2002
    Applicant: Asahi Glass Company, Limited
    Inventors: Toshiyuki Uno, Yasuhiko Akao
  • Patent number: 6329044
    Abstract: Transparent conductive films are provided which provide high sheet resistance, high transparency, high heat resistance and high moisture resistance, wherein the transparent conductive films contain either (a) an oxide film made of a mixed oxide of indium and tin and doped with at least 0.01 and less than 0.6 weight % of nitrogen and a geometrical thickness of from 5 to 25 nm or (b) an oxide film made of a mixed oxide of indium and tin, wherein the oxide film contains tin within a range of from 4.2 to 8.3 atomic % based on indium and a geometrical thickness of from 5 to 20 nm, and where in each case (a) and (b) the oxide film has a light transmittance of more than 90% at a wavelength of 550 nm, transparent conductive film-coated substrates prepared therefrom and touch panels prepared from the transparent conductive film-coated substrates.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: December 11, 2001
    Assignee: Asahi Glass Company Ltd.
    Inventors: Katsumi Inoue, Yasuhiko Akao, Satoru Takaki, Yasuo Hayashi, Teruo Fujiwara