Patents by Inventor Kazutaka Ono

Kazutaka Ono 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: 20220144685
    Abstract: 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: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Applicant: AGC Inc.
    Inventors: Mikio NAGANO, Seiji INABA, Yasunari SAITO, Kiyoshi TAMAI, Kazutaka ONO, Yuha KOBAYASHI
  • Publication number: 20220102850
    Abstract: Provided is a glass substrate with which it is possible to reduce dielectric loss in high-frequency signals, and which also has excellent thermal shock resistance. This invention satisfies the relation {Young's modulus (GPa)×average thermal expansion coefficient (ppm/° C.) at 50-350° C.}?300 (GPa·ppm/° C.), wherein the relative dielectric constant at 20° C. and 35 GHz does not exceed 10, and the dielectric dissipation factor at 20° C. and 35 GHz does not exceed 0.006.
    Type: Application
    Filed: December 14, 2021
    Publication date: March 31, 2022
    Applicant: AGC Inc.
    Inventors: Shuhei NOMURA, Kazutaka ONO
  • Patent number: 11247933
    Abstract: An alkali-free glass substrate which is a glass substrate includes, as represented by molar percentage based on oxides, 0.1% to 10% of ZnO. The alkali-free glass substrate has an average coefficient of thermal expansion ?50/100 at 50 to 100° C. of from 2.70 ppm/° C. to 3.20 ppm/° C., an average coefficient of thermal expansion ?200/300 at 200 to 300° C. of from 3.45 ppm/° C. to 3.95 ppm/° C., and a value ?200/300/?50/100 obtained by dividing the average coefficient of thermal expansion ?200/300 at 200 to 300° C. by the average coefficient of thermal expansion ?50/100 at 50 to 100° C. of from 1.20 to 1.30.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: February 15, 2022
    Assignee: AGC INC.
    Inventors: Shuhei Nomura, Kazutaka Ono
  • Patent number: 11239549
    Abstract: Provided is a glass substrate with which it is possible to reduce dielectric loss in high-frequency signals, and which also has excellent thermal shock resistance. This invention satisfies the relation {Young's modulus (GPa)×average thermal expansion coefficient (ppm/° C.) at 50-350° C.}?300 (GPa·ppm/° C.), wherein the relative dielectric constant at 20° C. and 35 GHz does not exceed 10, and the dielectric dissipation factor at 20° C. and 35 GHz does not exceed 0.006.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: February 1, 2022
    Assignee: AGC Inc.
    Inventors: Shuhei Nomura, Kazutaka Ono
  • Publication number: 20220024803
    Abstract: A glass plate has a dielectric dissipation factor at 10 GHz of tan ?A and a glass transition temperature of Tg° C. The glass plate satisfies (tan ?100?tan ?A)?0.0004, where tan ?100 is a dielectric dissipation factor of the glass plate at 10 GHz after having been heated to (Tg+50)° C. and then cooled to (Tg?150)° C. at 100° C./min.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Applicant: AGC Inc.
    Inventors: Hiroyuki HIJIYA, Yutaka KUROIWA, Kazutaka ONO, Tomonori OGAWA, Yusaku MATSUO
  • Publication number: 20220024805
    Abstract: An alkali-free glass includes, as represented by mole percentage based on oxides, SiO2: 57 to 70%, Al2O3: 5 to 15%, B2O3: 15 to 24%, MgO: 0.2 to 10%, CaO: 0.1 to 7%, SrO: 0.1 to 2.5%, BaO: 0 to 10%, and ZnO: 0 to 0.1%, or includes, as represented by mole percentage based on oxides, SiO2: 57 to 70%, Al2O3: 5 to 15%, B2O3: 15 to 24%, MgO: 0.1 to 10%, CaO: 0.1 to 10%, SrO: 0.1 to 10%, BaO: 0.1 to 10%, and ZnO: 0 to 0.1%. Formula (A) is [Al2O3]/[B2O3], and a value of the formula (A) is larger than 0.35 and 1.4 or smaller.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Applicant: AGC Inc.
    Inventors: Yusaku MATSUO, Kazutaka ONO
  • Publication number: 20220002183
    Abstract: A glass substrate contains, as a glass matrix composition as represented by mole percentage based on oxides, SiO2: 58-75%, Al2O3: 4.5-16%, B2O3: 0-6%, MgO: 0-6%, CaO: 0-6%, SrO: 5-20%, BaO: 5-20%, and MgO+CaO+SrO+BaO:15-40%. The glass substrate has an alkali metal oxide content of 0-0.1% as represented by mole percentage based on oxides. The glass substrate has an average coefficient of thermal expansion ? of 56-90 (×10?7/° C.) at 50° C.-350° C.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Applicant: AGC INC.
    Inventors: Yu HANAWA, Kazutaka ONO, Shigeki SAWAMURA
  • Publication number: 20210387897
    Abstract: An alkali-free glass includes, in mol % in terms of oxides: SiO2: 63-75%; Al2O3:10-16%; B2O3: larger than 0.5% and 5% or smaller; MgO: 0.1-15%; CaO: 0.1-12%; SrO: 0-8%; and BaO: 0-6%. [MgO]/[CaO] is larger than 1.5. A value of Formula (A) is 82.5 or larger. A value of Formula (B) is 690 or larger and 800 or smaller. A value of Formula (C) is 100 or smaller. A value of Formula (D) is 20 or smaller. The alkali-free glass has a Young's modulus of 83 GPa or larger and a surface devitrification viscosity ?c of 104.2 dPa·s or higher.
    Type: Application
    Filed: August 6, 2021
    Publication date: December 16, 2021
    Applicant: AGC Inc.
    Inventors: Hirofumi TOKUNAGA, Kazutaka ONO
  • Publication number: 20210380466
    Abstract: An alkali-free glass includes, in mol % in terms of oxides: SiO2: 63-75%; Al2O3: 10-16%; B2O3: 0-5%; MgO: 0.1-15%; CaO: 0.1-12%; SrO: 0-8%; and BaO: 0-6%. [MgO]/[CaO] is 1.5 or smaller. A value of Formula (A) is 82.5 or larger. A value of Formula (B) is 690 or larger and 800 or smaller. A value of Formula (C) is 100 or smaller. A value of Formula (D) is 20 or smaller. The alkali-free glass has a Young's modulus of 83 GPa or larger and a surface devitrification viscosity ?c of 104.2 dPa·s or higher.
    Type: Application
    Filed: August 6, 2021
    Publication date: December 9, 2021
    Applicant: AGC Inc.
    Inventors: Hirofumi TOKUNAGA, Kazutaka ONO
  • Publication number: 20210363051
    Abstract: An alkali-free glass includes, in mol % in terms of oxides: SiO2: 63-69%; Al2O3: 8-13%; B2O3: 0.5-4%; MgO: 8-15%; CaO: 4-12%; SrO: 0-4.5%; and BaO: 0-1%. [MgO]/[CaO] is 0.67 to 3.75. A value of Formula (A) is 84 or larger. A value of Formula (B) is 715 or smaller. A value of Formula (C) is 200 or smaller. A value of Formula (D) is 15 or smaller.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Applicant: AGC Inc.
    Inventors: Hirofumi TOKUNAGA, Kazutaka ONO
  • Publication number: 20210366760
    Abstract: A glass substrate is laminated with a substrate containing silicon to thereby form a laminated substrate. The glass substrate has a concave surface and a convex surface and has one or more marks that distinguish between the concave surface and the convex surface.
    Type: Application
    Filed: August 10, 2021
    Publication date: November 25, 2021
    Applicant: AGC Inc.
    Inventors: Yu Hanawa, Shuhei Nomura, Kazutaka Ono, Nobuhiko Takeshita, Keisuke Hanashima
  • Patent number: 11180407
    Abstract: A glass substrate contains, as a glass matrix composition as represented by mole percentage based on oxides, SiO2: 58-75%, Al2O3: 4.5-16%, B2O3: 0-6%, MgO: 0-6%, CaO: 0-6%, SrO: 5-20%, BaO: 5-20%, and MgO+CaO+SrO+BaO: 15-40%. The glass substrate has an alkali metal oxide content of 0-0.1% as represented by mole percentage based on oxides. The glass substrate has an average coefficient of thermal expansion ? of 56-90 (×10?7/° C.) at 50° C.-350° C.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: November 23, 2021
    Assignee: AGC Inc.
    Inventors: Yu Hanawa, Kazutaka Ono, Shigeki Sawamura
  • Publication number: 20210347682
    Abstract: The present invention relates to a glass ceramic having a visible-light transmittance of 85% or more in terms of a thickness of 0.7 mm, and a haze value of 1.0% or less in terms of a thickness of 0.7 mm, and including, in mass % on an oxide basis: 45-70% of SiO2; 1-15% of Al2O3; and 10-25% of Li2O.
    Type: Application
    Filed: July 22, 2021
    Publication date: November 11, 2021
    Applicant: AGC Inc.
    Inventors: Qing LI, Yusuke ARAI, Akio KOIKE, Kazutaka ONO, Hitomi FURUTA, Shigeki SAWAMURA
  • Publication number: 20210343610
    Abstract: The present invention provides a glass substrate in which in a step of sticking a glass substrate and a silicon-containing substrate to each other, bubbles hardly intrude therebetween. The present invention relates to a glass substrate for forming a laminated substrate by lamination with a silicon-containing substrate, having a warpage of 2 ?m to 300 ?m, and an inclination angle due to the warpage of 0.0004° to 0.12°.
    Type: Application
    Filed: July 6, 2021
    Publication date: November 4, 2021
    Applicant: AGC Inc.
    Inventors: Yu HANAWA, Shigeki SAWAMURA, Shuhei NOMURA, Kazutaka ONO, Nobuhiko TAKESHITA, Keisuke HANASHIMA
  • Patent number: 11133215
    Abstract: A glass substrate is laminated with a substrate containing silicon to thereby form a laminated substrate. The glass substrate has a concave surface and a convex surface and has one or more marks that distinguish between the concave surface and the convex surface.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: September 28, 2021
    Assignee: AGC Inc.
    Inventors: Yu Hanawa, Shuhei Nomura, Kazutaka Ono, Nobuhiko Takeshita, Keisuke Hanashima
  • Patent number: 11114356
    Abstract: The present invention provides a glass substrate in which in a step of sticking a glass substrate and a silicon-containing substrate to each other, bubbles hardly intrude therebetween. The present invention relates to a glass substrate for forming a laminated substrate by lamination with a silicon-containing substrate, having a warpage of 2 ?m to 300 ?m, and an inclination angle due to the warpage of 0.0004° to 0.12°.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: September 7, 2021
    Assignee: AGC Inc.
    Inventors: Yu Hanawa, Shigeki Sawamura, Shuhei Nomura, Kazutaka Ono, Nobuhiko Takeshita, Keisuke Hanashima
  • Publication number: 20210261456
    Abstract: A glass substrate for high-frequency devices includes, in terms of molar percentage based on oxides: one or more alkaline-earth metal oxides in a total amount of 0.1 to 13%; Al2O3 and B2O3 in a total amount of 1 to 40%, in which a molar ratio of the contents represented by Al2O3/(Al2,O3+B2O3) is 0 to 0.45; at least one oxide selected from the group consisting of Sc2O3, TiO2, ZnO, Ga2O3, GeO2, Y2O3, ZrO2, Nb2O5, In2O3, TeO2, HfO2, Ta2O5, WO3, Bi2O3, La2O3, Gd2O3, Yb2O3, and Lu2O3, in a total amount of 0.1 to 1.0%; and SiO2 as a main component. The glass substrate has a dielectric dissipation factor at 35 GHz of 0.007 or less.
    Type: Application
    Filed: May 13, 2021
    Publication date: August 26, 2021
    Applicant: AGC Inc.
    Inventors: Kazutaka ONO, Yusaku MATSUO, Shuhei NOMURA
  • Patent number: 11066325
    Abstract: To provide an alkali-free glass having a high specific elastic modulus, a suitable strain point, a low density, a not too low thermal expansion coefficient, a good clarity and a good solubility. An alkali-free glass, which comprises, as represented by mol % based on oxides, SiO2: 62 to 70%, Al2O3: 11 to 14%, B2O3: 3 to 6%, MgO: 7 to 10%, CaO: 3 to 9%, SrO: 1 to 5% and BaO: 0 to 1%, wherein [SiO2]+0.7[Al2O3]+1.2[B2O3]+0.5[MgO]+0.4[CaO]?0.25[SrO]?0.88[BaO] is at least 85, [SiO2]+0.45[Al2O3]+0.21[B2O3]?0.042[MgO]+0.042[CaO]+0.15[SrO]+0.38[BaO] is from 72 to 75, 0.4[SiO2]+0.4[Al2O3]+0.25[B2O3]?0.7[MgO]?0.88[CaO]?1.4[SrO]?1.7[BaO] is at most 19, the specific modulus is at least 32 MN·m/kg, the strain point is from 690 to 710° C., the density is at most 2.54 g/cm3, the average thermal expansion coefficient at from 50 to 350° C. is at least 35×10?7/° C., and the temperature T2 at which the glass viscosity reaches 102 dPa·s is from 1,610 to 1,680° C.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: July 20, 2021
    Assignee: AGC Inc.
    Inventors: Hirofumi Tokunaga, Kazutaka Ono
  • Patent number: 11053160
    Abstract: To provide an alkali-free glass, of which the compaction is low, the strain point is high, and the ultraviolet transmittance is high, and which is easy to melt. An alkali-free glass, which comprises, as represented by mol % based on oxides, SiO2 from 65 to 75, Al2O3 from 9 to 15, B2O3 from 0 to 3, MgO from 0 to 12, CaO from 0 to 8, SrO from 0 to 6, and BaO from 0 to 5, wherein MgO+CaO+SrO+BaO is from 12 to 22, and 4.84[Fe2O3]+5.65[Na2O]+4.03[K2O]+4.55[SnO2] is at most 0.55, and of which the compaction is at most 80 ppm.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: July 6, 2021
    Assignee: AGC Inc.
    Inventors: Hirofumi Tokunaga, Kazutaka Ono, Motoyuki Hirose
  • Patent number: 11028005
    Abstract: To provide a glass plate having a high Young's modulus and a high devitrification viscosity. A glass includes, in mol % based on oxides: SiO2 of 30.0 to 50.0%; B2O3 of 10.0 to 30.0%; Al2O3 of 10.0 to 30.0%; Y2O3 of 3.0 to 17.0%; and Gd2O3 of 3.5 to 17.0%, in which (Gd2O3+Y2O3) is from 16.0 to 22.0%, and (Gd2O3/Y2O3) is from 0.15 to 7.0.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: June 8, 2021
    Assignee: AGC INC.
    Inventors: Seiji Inaba, Kazutaka Ono