Patents by Inventor Shusaku Akiba

Shusaku Akiba 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: 20230365456
    Abstract: The present invention is a glass ceramic including a crystal and a residual glass, in which the residual glass has a Young's modulus parameter ER of 75 or more, the Young's modulus parameter ER being calculated based on the following formula: ER=62.2×[SiO2]+134.9×[Al2O3]+121.7×[B2O3]+33.0×[P2O5]+72.6×[MgO]+121.5×[CaO]+43.7×[SrO]+38.6×[BaO]+84.0×[Li2O]+26.2×[Na2O]+17.8×[K2O]+156.8×[ZrO2]+154.3×[TiO2]+74.7×[La2O3]+80.3×[Y2O3]+54.3×[ZnO].
    Type: Application
    Filed: July 20, 2023
    Publication date: November 16, 2023
    Applicant: AGC INC.
    Inventors: Shigeki SAWAMURA, Qing LI, Hitomi FURUTA, Shusaku AKIBA
  • Publication number: 20230348315
    Abstract: A glass plate includes, in terms of molar percentage based on oxides: 50% ? SiO2 ? 80%; 5.0% ? Al2O3 ? 10%; 5.0% < B2O3 ? 15%; 0.0% ? P2O5 ? 10%; 0.0% ? MgO ? 10%; 0.0% ? CaO ? 10%; 0.0% ? SrO ? 10%; 0.0% ? BaO ? 10%; 0.0% ? ZnO ? 5.0%; 0.0% ? Li2O ? 5.0%; 0.0% ? Na2O ? 5.0%; 0.0% ? K2O ? 5.0%; 0.0% ? R2O ? 5.0%; Fe2O3 ? 0.04%; 15% ? RO ? 30%; B2O3 - Al2O3 > 0.0%; and 0.30 < Al2O3/RO < 0.50, in which the glass plate has a temperature T12 at which a glass viscosity is 1012 dPa·s of 730° C. or lower, and the glass plate has an average thermal expansion coefficient at 50° C. to 350° C. of 40 × 10-7/K or more.
    Type: Application
    Filed: June 8, 2023
    Publication date: November 2, 2023
    Applicant: AGC Inc.
    Inventors: Takato KAJIHARA, Shigeki SAWAMURA, Rikiya KADO, Yutaka KUROIWA, Shusaku AKIBA
  • Publication number: 20230331622
    Abstract: A borosilicate glass includes, in terms of molar percentage based on oxides: 70.0%?SiO2?85.0%; 5.0%?B2O3?20.0%; 0.0%?Al2O3?3.0%; 0.0%?Li2O?5.0%; 0.0%?Na2O?5.0%; 0.0%?K2O?5.0%; 0.0%?MgO?5.0%; 0.0%?CaO?5.0%; 0.0%?SrO?5.0%; 0.0%?BaO?5.0%; and 0.06%?Fe2O3?1.0%, in which the borosilicate glass has a basicity of 0.485 or more, and [AlO3]/([SiO2]+[B2O3]) of 0.015 or less.
    Type: Application
    Filed: June 8, 2023
    Publication date: October 19, 2023
    Applicant: AGC Inc.
    Inventors: Rikiya KADO, Takato KAJIHARA, Shigeki SAWAMURA, Shusaku AKIBA, Yutaka KUROIWA
  • Patent number: 11767252
    Abstract: A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO2, 13 to 18% of Al2O3, 0 to 5% of B2O3, 0.5 to 4% of P2O5, 4 to 10% of Li2O, 5 to 14% of Na2O, 0 to 2% of K2O, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO2, and 0 to 2% of ZrO2. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO2×329+Al2O3×786+B2O3×627+P2O5×(?941)+Li2O×927+Na2O×47.5+K2O×(?371)+MgO×1230+CaO×1154+SrO×733+ZrO2×51.8, by using the contents in mole percentage on an oxide basis of components.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: September 26, 2023
    Assignee: AGC Inc.
    Inventors: Suguru Murayama, Seiki Ohara, Qing Li, Shusaku Akiba
  • Patent number: 11761799
    Abstract: A sensor module includes: a base member; at least one of a single or a plurality of sensors and vibrators arranged on the base member; and a protective member constituted of at least one flat surface or a curved surface, provided so as to cover the at least one of the sensors and the vibrators. A part or whole of the protective member is formed of a strengthened glass and the strengthened glass is a chemically strengthened glass or a physically strengthened glass.
    Type: Grant
    Filed: November 22, 2022
    Date of Patent: September 19, 2023
    Assignee: AGC INC.
    Inventors: Shusaku Akiba, Masao Ozeki, Satoshi Takeda, Satoshi Kanasugi, Satoshi Ogami
  • Publication number: 20230192534
    Abstract: The present invention relates to a glass ceramic having a lithium aluminosilicate composition and including a crystal and a residual glass, in which the residual glass has a composition including, in terms of mol % based on oxides: 25% to 70% of SiO2; 3% to 35% of Al2O3; 0.1% to 20% of Li2O; 0.1% to 20% of Na2O; 0% to 10% of K2O; and 1% to 15% of ZrO2, and a parameter V is ?600 or more and 720 or less, the parameter V being calculated based on the following formula: V=49.589×[SiO2]+61.806×[Al2O3]+45.456×[P2O5]+41.151×[MgO]+110.26×[CaO]+50.263×[SrO]+55.693×[Li2O]+3.598×[Na2O]+9.503×[K2O]+6.83×[TiO2]?2.885×[ZrO2]?3746.99.
    Type: Application
    Filed: February 14, 2023
    Publication date: June 22, 2023
    Applicant: AGC Inc.
    Inventors: Shigeki SAWAMURA, Eriko MAEDA, Shusaku AKIBA, Satoshi OGAMI
  • Publication number: 20230192531
    Abstract: The present invention relates to a chemically strengthened glass having a sheet shape, in which a haze in terms of a thickness of 0.70 mm is 1.0% or less, and on at least one main surface of the glass, a ratio (Rku/Hv)×1000 of kurtosis Rku of surface unevenness to Vickers hardness Hv is 1 or more and 4.4 or less.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Applicant: AGC Inc.
    Inventors: Hitomi FURUTA, Qing LI, Shigeki SAWAMURA, Shusaku AKIBA
  • Publication number: 20230192540
    Abstract: The present invention relates to a chemically strengthened glass having a haze value in terms of a thickness of 0.7 mm of 0.5% or less, having a surface compressive stress value of 400 MPa or more, having a depth of a compressive stress layer of 70 ?m or more, having an ST limit of 18000 MPa·?m to 30000 MPa·?m, and being a glass ceramic including at least one of a Li3PO4 crystal and a Li4SiO4 crystal, or including a solid solution crystal of Li3PO4 or Li4SiO4 or a solid solution of both Li3PO4 and Li4SiO4.
    Type: Application
    Filed: February 10, 2023
    Publication date: June 22, 2023
    Applicant: AGC Inc.
    Inventors: Hitomi FURUTA, Qing LI, Shigeki SAWAMURA, Shusaku AKIBA, Seiji INABA
  • Publication number: 20230159370
    Abstract: The present invention relates to a chemically strengthened glass ceramic including a crystalline phase, having two main surfaces opposed to each other, and including an amorphized region in a surface layer of at least one of the main surfaces and a crystallized region inside the glass, in which the amorphized region has a crystallinity of 10 vol % or less at a depth of 100 nm from an outermost surface of the glass.
    Type: Application
    Filed: January 25, 2023
    Publication date: May 25, 2023
    Applicant: AGC Inc.
    Inventors: Takumi UMADA, Hitomi FURUTA, Shusaku AKIBA
  • Publication number: 20230120488
    Abstract: The present invention pertains to a laminated glass for a vehicle, the laminated glass including a first glass sheet, a second glass sheet and an intermediate film sandwiched between the first glass sheet and the second glass sheet, in which: the total thickness of the first glass sheet, the second glass sheet and the intermediate film is 4.0 mm or more; the first glass sheet is formed of a borosilicate glass containing, in terms of oxide by molar percentage, 1.0% or more of B2O3; and when a radio wave (TM wave) with a frequency of 79 [GHz] is made incident at an incident angle of 60° to the first glass sheet, the transmission property S21 is -4.0 [dB] or more.
    Type: Application
    Filed: October 28, 2022
    Publication date: April 20, 2023
    Applicant: AGC Inc.
    Inventors: Takato KAJIHARA, Shigeki SAWAMURA, Shusaku AKIBA, Yutaka KUROIWA
  • Publication number: 20230112685
    Abstract: The present invention relates to a glass including, in terms of mole percentage based on oxides: 52% to 70% of SiO2; 14% to 25% of Al2O3; 10% to 18% of Li2O; 1% to 7% of Na2O; 0.1% to 5% of K2O; 0% to 10% of B2O3; 0% to 5% of P2O5; 0% to 5% of MgO; 0% to 5% of ZnO; 0% to 2% of ZrO2; and 0% to 5% of Y2O3, in which a parameter M is 20 or less, the parameter M being determined by the following formula, M=?1.15×[SiO2]?1.73×[Al2O3]+0.155×[Li2O]+0.74×[Na2O]?4.75×[K2O]?2.1×[B2O3]?2.17×[P2O5]+3.25×[MgO]?2.0×[ZnO]?13.3×[ZrO2]?0.80×[Y2O3]+120.
    Type: Application
    Filed: December 12, 2022
    Publication date: April 13, 2023
    Applicant: AGC Inc.
    Inventors: Eriko MAEDA, Kazuki KANEHARA, Shusaku AKIBA
  • Publication number: 20230086147
    Abstract: A sensor module includes: a base member; at least one of a single or a plurality of sensors and vibrators arranged on the base member, and a protective member constituted of at least one flat surface or a curved surface, provided so as to cover the at least one of the sensors and the vibrators. A part or whole of the protective member is formed of a strengthened glass and the strengthened glass is a chemically strengthened glass or a physically strengthened glass.
    Type: Application
    Filed: November 22, 2022
    Publication date: March 23, 2023
    Applicant: AGC INC.
    Inventors: Shusaku AKIBA, Masao OZEKI, Satoshi TAKEDA, Satoshi KANASUGI, Satoshi OGAMI
  • Publication number: 20230082423
    Abstract: The present invention relates to a glass including, in terms of mole percentage based on oxides: 50.0 to 75.0% of SiO2; 7.5 to 25.0% of Al2O3; 0 to 25.0% of B2O3; 6.5 to 20.0% of Li2O; 1.5 to 10.0% of Na2O; 0 to 4.0% of K2O; 1.0 to 20.0% of MgO; one or more components selected from MgO, CaO, SrO, and BaO in a total amount of 1.0 to 20.0%; and 0 to 5.0% of TiO2, in which a value of Y calculated based on the following formula is 19.5 or less, Y=1.2×([MgO]+[CaO]+[SrO]+[BaO])+1.6×([Li2O]+[Na2O]+[K2O]), provided that [MgO], [CaO], [SrO], [BaO], [Li2O], [Na2O], and [K2O] are contents, in terms of mole percentage based on oxides, of components of MgO, CaO, SrO, BaO, Li2O, Na2O, and K2O respectively.
    Type: Application
    Filed: November 9, 2022
    Publication date: March 16, 2023
    Applicant: AGC Inc.
    Inventors: Kazuki KANEHARA, Yutaka KUROIWA, Shusaku AKIBA, Hiroyuki HIJIYA
  • Publication number: 20230060972
    Abstract: The present invention relates to a chemically strengthened glass article including: a first surface; a second surface facing the first surface; and an end portion in contact with the first surface and the second surface, in which the first surface has a compressive stress value of 400 MPa to 1000 MPa, in which, when a compressive stress value of an inside of the glass is expressed with a depth from the first surface as a variable, a depth m [?m] at which the compressive stress value is maximum is larger than 0 ?m, and a value of CSm?CS0 [MPa] is 30 MPa or more, and in which a depth DOL at which the compressive stress value is 0 is 50 ?m to 150 ?m.
    Type: Application
    Filed: October 12, 2022
    Publication date: March 2, 2023
    Applicant: AGC Inc.
    Inventors: Takumi UMADA, Yusuke FUJIWARA, Shusaku AKIBA
  • Publication number: 20230021473
    Abstract: The present invention relates to a glass including, in terms of mole percentage based on oxides: SiO2 in an amount of 45% to 65%; Al2O3 in an amount of 18% to 30%; Li2O in an amount of 7% to 15%; one or more selected from Y2O3 and La2O3 in a total amount of 0% to 10%; P2O5 in an amount of 0% to 10%; B2O3 in an amount of 0% to 10%; and ZrO2 in an amount of 0% to 4%, and satisfying the following expression: [Al2O3]—[R2O]—[RO]—[P2O5]>0, provided that, in terms of mole percentage based on oxides, a content of Al2O3 is defined as [Al2O3], a content of P2O5 is defined as [P2O5], a total content of alkali metal oxides is defined as [R2O], and a total content of alkali earth metal oxides is defined as [RO].
    Type: Application
    Filed: September 22, 2022
    Publication date: January 26, 2023
    Applicant: AGC Inc.
    Inventors: Takumi UMADA, Kenji IMAKITA, Shusaku AKIBA, Yusaku MATSUO
  • Patent number: 11543271
    Abstract: A sensor module includes: a base member; at least one of a single or a plurality of sensors and vibrators arranged on the base member; and a protective member constituted of at least one flat surface or a curved surface, provided so as to cover the at least one of the sensors and the vibrators. A part or whole of the protective member is formed of a strengthened glass and the strengthened glass is a chemically strengthened glass or a physically strengthened glass.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: January 3, 2023
    Assignee: AGC INC.
    Inventors: Shusaku Akiba, Masao Ozeki, Satoshi Takeda, Satoshi Kanasugi, Satoshi Ogami
  • Publication number: 20220411318
    Abstract: The present invention relates to a glass ceramic including crystals, and including, in mol % in terms of oxides: 65-75% of SiO2; 3-6% of Al2O3; 15-25% of Li2O; 0.2-4% of P2O5; 0.5-5% of ZrO2; and 0.01-0.5% of HfO2, in which the crystals include one or more kinds of crystals selected from the group consisting of ?-spodumene crystals, petalite crystals, and eucryptite crystals.
    Type: Application
    Filed: August 25, 2022
    Publication date: December 29, 2022
    Applicant: AGC Inc.
    Inventors: Seiki OHARA, Qing LI, Shusaku AKIBA
  • Patent number: 11505491
    Abstract: The present invention relates to a glass ceramic including crystals, and including, in mol % in terms of oxides: 65-75% of SiO2; 3-6% of Al2O3; 15-25% of Li2O; 0.2-4% of P2O5; 0.5-5% of ZrO2; and 0.01-0.5% of HfO2, in which the crystals include one or more kinds of crystals selected from the group consisting of ?-spodumene crystals, petalite crystals, and eucryptite crystals.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: November 22, 2022
    Assignee: AGC INC.
    Inventors: Seiki Ohara, Qing Li, Shusaku Akiba
  • Publication number: 20220119306
    Abstract: The present invention relates to a chemically strengthened glass having a first main surface, and satisfying the following (1a) to (4a): (1a) in a thickness range of [depth where a compressive stress value is 0]±10 ?m, a stress curve has a gradient of ?15 MPa/?m to ?3 MPa/?m and an Na concentration curve has a gradient of 0.02/?m to 0.12/?m in terms of absolute value; (2a) the Na concentration curve, in a sheet-thickness-direction range lying between the first main surface and the depth where the compressive stress value is 0, has a monotonously decreasing gradient; (3a) the chemically strengthened glass has a thickness of 1 mm or less; and (4a) the chemically strengthened glass includes Li2O in an amount of 10 mol % or more in mole percentage on an oxide basis.
    Type: Application
    Filed: December 23, 2021
    Publication date: April 21, 2022
    Applicant: AGC Inc.
    Inventors: Shusaku AKIBA, Takumi UMADA
  • Publication number: 20220098090
    Abstract: The present invention relates to a crystallized glass having a visible-light transmittance of 88% or more in terms of a thickness of 0.7 mm, having a volume fraction of a crystalline phase of 30% or more, and including SnO2, in which the number of bubbles having a major-axis length of 10 ?m-50 ?m is 3 or less per 10 cm3.
    Type: Application
    Filed: July 1, 2021
    Publication date: March 31, 2022
    Applicant: AGC Inc.
    Inventors: Hiroki HIRAO, Shusaku AKIBA