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).
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Publication number: 20240150224Abstract: The present invention relates to a glass ceramic including: a lithium disilicate-based crystal; and an SiO2-based crystal, in which a content of the lithium disilicate-based crystal and a content of the SiO2-based crystal are both equal to or greater than a content of crystal other than the lithium disilicate-based crystal and the SiO2-based crystal on a mass basis.Type: ApplicationFiled: January 16, 2024Publication date: May 9, 2024Applicant: AGC Inc.Inventors: Kazuki KANEHARA, Yutaka KUROIWA, Shusaku AKIBA
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Publication number: 20240150225Abstract: The present invention relates to a glass ceramic, in which a crystal contained in the largest amount on a mass basis is a lithium disilicate-based crystal, and a ratio of Li ions in Li ion sites of the lithium disilicate-based crystal is less than 95%. The glass ceramic may have a light transmittance in terms of a thickness of 0.7 mm of 85% or more in a wavelength range of 400 nm to 1,000 nm.Type: ApplicationFiled: January 17, 2024Publication date: May 9, 2024Applicant: AGC Inc.Inventors: Kazuki KANEHARA, Yutaka KUROIWA, Shusaku AKIBA
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Publication number: 20240150226Abstract: The present invention relates to a glass ceramic, in which a crystal contained in the largest amount on a mass basis is a lithium disilicate-based crystal, and a difference obtained by subtracting a ratio (mass %) of a content of a crystal contained in the second largest amount on a mass basis from a ratio (mass %) of a content of the lithium disilicate-based crystal is 20 mass % or more.Type: ApplicationFiled: January 17, 2024Publication date: May 9, 2024Applicant: AGC Inc.Inventors: Kazuki KANEHARA, Yutaka KUROIWA, Shusaku AKIBA
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Publication number: 20230365456Abstract: 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: ApplicationFiled: July 20, 2023Publication date: November 16, 2023Applicant: AGC INC.Inventors: Shigeki SAWAMURA, Qing LI, Hitomi FURUTA, Shusaku AKIBA
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Publication number: 20230348315Abstract: 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: ApplicationFiled: June 8, 2023Publication date: November 2, 2023Applicant: AGC Inc.Inventors: Takato KAJIHARA, Shigeki SAWAMURA, Rikiya KADO, Yutaka KUROIWA, Shusaku AKIBA
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Publication number: 20230331622Abstract: 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: ApplicationFiled: June 8, 2023Publication date: October 19, 2023Applicant: AGC Inc.Inventors: Rikiya KADO, Takato KAJIHARA, Shigeki SAWAMURA, Shusaku AKIBA, Yutaka KUROIWA
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Patent number: 11767252Abstract: 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: GrantFiled: September 17, 2020Date of Patent: September 26, 2023Assignee: AGC Inc.Inventors: Suguru Murayama, Seiki Ohara, Qing Li, Shusaku Akiba
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Patent number: 11761799Abstract: 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: GrantFiled: November 22, 2022Date of Patent: September 19, 2023Assignee: AGC INC.Inventors: Shusaku Akiba, Masao Ozeki, Satoshi Takeda, Satoshi Kanasugi, Satoshi Ogami
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Publication number: 20230192534Abstract: 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: ApplicationFiled: February 14, 2023Publication date: June 22, 2023Applicant: AGC Inc.Inventors: Shigeki SAWAMURA, Eriko MAEDA, Shusaku AKIBA, Satoshi OGAMI
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Publication number: 20230192531Abstract: 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: ApplicationFiled: February 15, 2023Publication date: June 22, 2023Applicant: AGC Inc.Inventors: Hitomi FURUTA, Qing LI, Shigeki SAWAMURA, Shusaku AKIBA
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Publication number: 20230192540Abstract: 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: ApplicationFiled: February 10, 2023Publication date: June 22, 2023Applicant: AGC Inc.Inventors: Hitomi FURUTA, Qing LI, Shigeki SAWAMURA, Shusaku AKIBA, Seiji INABA
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Publication number: 20230159370Abstract: 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: ApplicationFiled: January 25, 2023Publication date: May 25, 2023Applicant: AGC Inc.Inventors: Takumi UMADA, Hitomi FURUTA, Shusaku AKIBA
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Publication number: 20230120488Abstract: 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: ApplicationFiled: October 28, 2022Publication date: April 20, 2023Applicant: AGC Inc.Inventors: Takato KAJIHARA, Shigeki SAWAMURA, Shusaku AKIBA, Yutaka KUROIWA
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Publication number: 20230112685Abstract: 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: ApplicationFiled: December 12, 2022Publication date: April 13, 2023Applicant: AGC Inc.Inventors: Eriko MAEDA, Kazuki KANEHARA, Shusaku AKIBA
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Publication number: 20230086147Abstract: 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: ApplicationFiled: November 22, 2022Publication date: March 23, 2023Applicant: AGC INC.Inventors: Shusaku AKIBA, Masao OZEKI, Satoshi TAKEDA, Satoshi KANASUGI, Satoshi OGAMI
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Publication number: 20230082423Abstract: 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: ApplicationFiled: November 9, 2022Publication date: March 16, 2023Applicant: AGC Inc.Inventors: Kazuki KANEHARA, Yutaka KUROIWA, Shusaku AKIBA, Hiroyuki HIJIYA
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Publication number: 20230060972Abstract: 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: ApplicationFiled: October 12, 2022Publication date: March 2, 2023Applicant: AGC Inc.Inventors: Takumi UMADA, Yusuke FUJIWARA, Shusaku AKIBA
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Publication number: 20230021473Abstract: 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: ApplicationFiled: September 22, 2022Publication date: January 26, 2023Applicant: AGC Inc.Inventors: Takumi UMADA, Kenji IMAKITA, Shusaku AKIBA, Yusaku MATSUO
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Patent number: 11543271Abstract: 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: GrantFiled: September 16, 2021Date of Patent: January 3, 2023Assignee: AGC INC.Inventors: Shusaku Akiba, Masao Ozeki, Satoshi Takeda, Satoshi Kanasugi, Satoshi Ogami
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Publication number: 20220411318Abstract: 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: ApplicationFiled: August 25, 2022Publication date: December 29, 2022Applicant: AGC Inc.Inventors: Seiki OHARA, Qing LI, Shusaku AKIBA