Patents by Inventor Yuha KOBAYASHI
Yuha KOBAYASHI 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: 20240030051Abstract: To suppress lowering of dimensional accuracy.Type: ApplicationFiled: October 3, 2023Publication date: January 25, 2024Applicant: AGC Inc.Inventors: Yuha KOBAYASHI, Yuichi YOSHIDA, Keisuke HANASHIMA
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Patent number: 11802080Abstract: A glass substrate 10 has a mark provided on a surface 10A of the glass substrate 10, the mark including plural dots 104, a depth H of each of the dots 104 is 0.5 ?m or larger and 7.0 ?m or smaller, and an inclination angle of a side surface 104B of each of the dots 104 is 5° or larger and 56° or smaller.Type: GrantFiled: July 19, 2022Date of Patent: October 31, 2023Assignee: AGC Inc.Inventors: Yuha Kobayashi, Shigeto Kumano, Kaede Katsuno, Keisuke Hanashima, Kohei Horiuchi
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Publication number: 20230335427Abstract: To appropriately manufacture a semiconductor device. A glass substrate is a glass substrate for manufacturing the semiconductor device. In a case in which one surface is directed downward in a vertical direction, and a first position, a second position, and a third position on the one surface on an outer side in a radial direction with respect to a center point of the glass substrate are supported by supporting members, a lowest point as a position where a height in the vertical direction is the lowest on other surface is positioned in a circular central region on an inner side in the radial direction with respect to the first position, the second position, and the third position when viewed from the vertical direction, a center of the central region is a center point of the glass substrate, and a diameter of the central region has a length of ? of a diameter of the glass substrate.Type: ApplicationFiled: June 22, 2023Publication date: October 19, 2023Applicant: AGC Inc.Inventors: Yuha KOBAYASHI, Kenji GOTO
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Publication number: 20230135358Abstract: Glass contains, in mol percentage on an oxide basis, SiO2: 35% to 60%, B2O3: 0.8% to 8%, Al2O3: 6% to 21%, and MgO: 17% to 44%. Additionally, (MgO/Al2O3)?1 is satisfied, a measured Madelung constant m calculated by an expression (1A) is equal to or larger than 1.05, and a thermal expansion factor as a ratio of a measured value ? of a linear thermal expansion coefficient to a calculated value ?cal of a linear thermal expansion coefficient calculated from composition is equal to or smaller than 0.7. Herein, E is a measured value of a Young's modulus of the glass, Vp is an average atomic packing factor of the glass, and Gt is average bond dissociation energy of the glass.Type: ApplicationFiled: October 26, 2022Publication date: May 4, 2023Applicant: AGC Inc.Inventors: Mikio NAGANO, Seiji INABA, Rikiya KADO, Kiyoshi TAMAI, Yuha KOBAYASHI
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Publication number: 20230046712Abstract: A glass substrate 10 has a mark provided on a surface 10A of the glass substrate 10, the mark including plural dots 104, a depth H of each of the dots 104 is 0.5 ?m or larger and 7.0 ?m or smaller, and an inclination angle of a side surface 104B of each of the dots 104 is 5° or larger and 56° or smaller.Type: ApplicationFiled: July 19, 2022Publication date: February 16, 2023Applicant: AGC Inc.Inventors: Yuha KOBAYASHI, Shigeto KUMANO, Kaede KATSUNO, Keisuke HANASHIMA, Kohei HORIUCHI
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Publication number: 20220144685Abstract: Suppressing deflection and reducing weight are to be achieved. A supporting glass substrate has a ratio of a Young's modulus (GPa) to a density (g/cm3) that is 37.0 (GPa·cm3/g) or more and the ratio has a value larger than a ratio calculation value, the ratio calculation value being a ratio of a Young's modulus (GPa) calculated from a composition to a density (g/cm3). The ratio calculation value is represented by the following expression: ?=2·?{(Vi·Gi)/Mi·Xi}, where, in the expression, Vi is a filling parameter of a metal oxide contained in the supporting glass substrate, Gi is a dissociation energy of a metal oxide contained in the supporting glass substrate, Mi is a molecular weight of a metal oxide contained in the supporting glass substrate, and Xi is a molar ratio of a metal oxide contained in the supporting glass substrate.Type: ApplicationFiled: January 27, 2022Publication date: May 12, 2022Applicant: AGC Inc.Inventors: Mikio NAGANO, Seiji INABA, Yasunari SAITO, Kiyoshi TAMAI, Kazutaka ONO, Yuha KOBAYASHI
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Patent number: 11021389Abstract: A supporting glass substrate has a ratio of a Young's modulus (GPa) to a density (g/cm3) that is 37.0 (GPa·cm3/g) or more and the ratio has a value larger than a ratio calculation value, the ratio calculation value being a ratio of a Young's modulus (GPa) calculated from a composition to a density (g/cm3). The ratio calculation value is represented by the following expression: ?=2·?{(Vi·Gi)/Mi·Xi}, where, in the expression, Vi is a filling parameter of a metal oxide contained in the supporting glass substrate, Gi is a dissociation energy of a metal oxide contained in the supporting glass substrate, Mi is a molecular weight of a metal oxide contained in the supporting glass substrate, and Xi is a molar ratio of a metal oxide contained in the supporting glass substrate.Type: GrantFiled: July 29, 2020Date of Patent: June 1, 2021Assignee: AGC Inc.Inventors: Seiji Inaba, Yasunari Saito, Kiyoshi Tamai, Kazutaka Ono, Yuha Kobayashi
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Publication number: 20210032155Abstract: A supporting glass substrate has a ratio of a Young's modulus (GPa) to a density (g/cm3) that is 37.0 (GPa·cm3/g) or more and the ratio has a value larger than a ratio calculation value, the ratio calculation value being a ratio of a Young's modulus (GPa) calculated from a composition to a density (g/cm3). The ratio calculation value is represented by the following expression: ?=2·?{(Vi·Gi)/Mi·Xi}, where, in the expression, Vi is a filling parameter of a metal oxide contained in the supporting glass substrate, Gi is a dissociation energy of a metal oxide contained in the supporting glass substrate. Mi is a molecular weight of a metal oxide contained in the supporting glass substrate, and Xi is a molar ratio of a metal oxide contained in the supporting glass substrate.Type: ApplicationFiled: July 29, 2020Publication date: February 4, 2021Applicant: AGC Inc.Inventors: Seiji INABA, Yasunari SAITO, Kiyoshi TAMAI, Kazutaka ONO, Yuha KOBAYASHI