Patents by Inventor Takato KAJIHARA

Takato KAJIHARA 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: 20250115512
    Abstract: The present invention relates to an alkali borosilicate glass, in which a content of total iron in terms of Fe2O3 is 0.03% or more in mol % in terms of oxides, a ratio of three-coordinated boron to a total amount of the three-coordinated boron and four-coordinated boron is 61% or less, the alkali borosilicate glass is substantially free of Se and CoO, when a thickness of the alkali borosilicate glass is converted into 2.0 mm, a solar transmittance Te specified in ISO-9050:2003 is 90% or less, a dominant wavelength Dw measured using a standard C light source specified in JIS Z 8701:1999 is 520 nm or more and 574 nm or less, and an excitation purity Pe measured using the standard C light source specified in JIS Z 8701:1999 is 4.0% or less.
    Type: Application
    Filed: December 18, 2024
    Publication date: April 10, 2025
    Applicant: AGC Inc.
    Inventors: Takato KAJIHARA, Shigeki SAWAMURA
  • Patent number: 12164127
    Abstract: A radio-wave transmitting substrate includes a dielectric substrate, and, on at least one main surface of the dielectric substrate, a heat-ray reflection film including an electroconductive film, and an opening where the electroconductive film is absent in a plan view. At least a part of the at least one main surface in a plan view is a radio-wave transmitting region. The radio-wave transmitting region is a region where every 1-cm square unit region in the region satisfies the following expression (a): L>802.6×S?503.7. L is an overall length (unit: mm/cm2) of a boundary between the heat-ray reflection film and the opening in the unit region, and S is a proportion of an area occupied by the heat-ray reflection film in the unit region.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: December 10, 2024
    Assignees: AGC Inc., AGC FLAT GLASS NORTH AMERICA, INC.
    Inventors: Shimpei Morita, Kouichirou Takahashi, Osamu Kagaya, Takato Kajihara, Akiyo Nogami
  • Publication number: 20240391826
    Abstract: A chemically strengthened glass in which a base glass composition of the chemically strengthened glass includes, in terms of molar percentage based on oxides: 55% to 75% of SiO2; 8% to 20% of Al2O3; 3% to 15% of Li2O; 1% to 5% of Na2O; 0% to 3% of K2O; 0% to 10% of MgO; 0% to 3% of Y2O3; 0% to 3% of ZrO2; 0% to 10% of CaO; 0% to 5% of SrO; 0% to 5% of ZnO; 0% to 3% of TiO2; 0% to 1% of SnO2; 0% to 5% of P2O5; and 0% to 10% of B2O3, a ratio [ZrO2]/([Y2O3]+[ZrO2]) is 0 or more and 0.7 or less, and the total content of Y2O3 and ZrO2 is 0.0% or more and 3.0% or less, and a value of 1nW represented by the Formula (1) is 10 or more and 20 or less.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Applicant: AGC Inc.
    Inventors: Hiroyuki HIJIYA, Takato KAJIHARA, Eriko MAEDA, Shusaku AKIBA, Chieko SUZUKI, Kenji IMAKITA
  • Publication number: 20240375490
    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: July 22, 2024
    Publication date: November 14, 2024
    Applicant: AGC Inc.
    Inventors: Takato KAJIHARA, Shigeki SAWAMURA, Shusaku AKIBA, Yutaka KUROIWA
  • Publication number: 20240293999
    Abstract: A borosilicate glass includes: in mol % in terms of oxide, 70.0%?SiO2?85.0%; 5.0%?B2O3 ?20.0%; 0.70%?Al2O3?10.0%; 0.0%?Li2O?5.0%; 0.0%?Na2O?10.0%; 0.0%?K2O?5.0%; 0.0%?MgO?5.0%; 0.0%?CaO?5.0%; 0.0%?SrO?5.0%; and 0.10%?Fe2O3?1.0%, in which the borosilicate glass has a total amount of SiO2, Al2O3, and B2O3 of 85.0% or more, the borosilicate glass is substantially free of BaO, PbO, and As2O3, and Tb?Ta>0 is satisfied.
    Type: Application
    Filed: April 26, 2024
    Publication date: September 5, 2024
    Applicant: AGC Inc.
    Inventors: Takato KAJIHARA, Shigeki SAWAMURA
  • Patent number: 12077036
    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: Grant
    Filed: October 28, 2022
    Date of Patent: September 3, 2024
    Assignee: AGC Inc.
    Inventors: Takato Kajihara, Shigeki Sawamura, Shusaku Akiba, Yutaka Kuroiwa
  • Publication number: 20240278540
    Abstract: A glass plate including a first surface and a second surface facing the first surface, in which, when Vickers indentation is performed with a force of 5 N on the first surface or the second surface, no cracks are generated or c/l<0.50, and when a fracture toughness value is defined as KIC, a crack length is defined as a, a Young's modulus is defined as E, an average thermal expansion coefficient at 20° ° C. to 300° C.
    Type: Application
    Filed: April 26, 2024
    Publication date: August 22, 2024
    Applicant: AGC Inc.
    Inventors: Shigeki SAWAMURA, Takato KAJIHARA
  • Publication number: 20240116800
    Abstract: A glass plate includes, in terms of molar percentage based on oxides: 70%?SiO2?85%; 0.0%?Al2O3?10%; 0.0%?B2O3?15%; 1.5%?MgO?20%; 0.0%?CaO?20%; 0.0% 0 SrO?5.0%; 0.0%?BaO?1.0%; 0.0% 0 ZnO?5.0%; 1.0%?Li2O?11%; 0.0%?Na2O?10%; 0.0% K2O?10%; 3.0%?R2O 11%; 0.01% Fe2O3?1.00%; and 2.0%?RO?20%, in which a temperature T2 at which a glass viscosity is 102 dPa·s is 1,650° C. or lower, a temperature T12 at which a glass viscosity is 1012 dPa·s is 730° C. or lower, a relative dielectric constant (Fr) at a frequency of 10 GHz is 6.5 or less, and a loss tangent (tan ?) at a frequency of 10 GHz is 0.0090 or less.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 11, 2024
    Applicant: AGC Inc.
    Inventors: Takato KAJIHARA, Shigeki SAWAMURA, Yutaka KUROIWA
  • 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
  • Publication number: 20230331620
    Abstract: To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate. A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.
    Type: Application
    Filed: March 13, 2023
    Publication date: October 19, 2023
    Applicant: AGC Inc.
    Inventors: Eriko Maeda, Takato Kajihara, Kensuke Nagai, Yutaka Kuroiwa, Osamu Kagaya, Ryuta Sonoda, Hiroyuki Hijiya
  • Publication number: 20230212059
    Abstract: To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate. A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.
    Type: Application
    Filed: March 13, 2023
    Publication date: July 6, 2023
    Applicant: AGC Inc.
    Inventors: Eriko Maeda, Takato Kajihara, Kensuke Nagai, Yutaka Kuroiwa, Osamu Kagaya, Ryuta Sonoda, Hiroyuki Hijiya
  • Patent number: 11634353
    Abstract: To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate. A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: April 25, 2023
    Assignee: AGC Inc.
    Inventors: Eriko Maeda, Takato Kajihara, Kensuke Nagai, Yutaka Kuroiwa, Osamu Kagaya, Ryuta Sonoda, Hiroyuki Hijiya
  • 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: 20230034469
    Abstract: The present invention relates to a crystallized glass including a crystalline phase consisting of Ba—Si—O, in which the crystallized glass includes Li, and crystallinity of Li-based crystals contained in the crystalline phase is 20% or lower as represented by weight %, a high-frequency substrate including the crystallized glass, and a manufacturing method for a crystallized glass including a crystalline phase consisting of Ba—Si—O, the method including: obtaining an amorphous glass by melt-shaping a material containing BaO and SiO2; and crystallizing the amorphous glass by holding the amorphous glass at a treatment temperature of 600° C. or higher and lower than 1,000° C.
    Type: Application
    Filed: September 28, 2022
    Publication date: February 2, 2023
    Applicant: AGC Inc.
    Inventors: Takato KAJIHARA, Hiroyuki HIJIYA, Tomonori OGAWA, Kosho AKATSUKA
  • Publication number: 20210191011
    Abstract: A radio-wave transmitting substrate includes a dielectric substrate, and, on at least one main surface of the dielectric substrate, a heat-ray reflection film including an electroconductive film, and an opening where the electroconductive film is absent in a plan view. At least a part of the at least one main surface in a plan view is a radio-wave transmitting region. The radio-wave transmitting region is a region where every 1-cm square unit region in the region satisfies the following expression (a): L>802.6×S?503.7. L is an overall length (unit: mm/cm2) of a boundary between the heat-ray reflection film and the opening in the unit region, and S is a proportion of an area occupied by the heat-ray reflection film in the unit region.
    Type: Application
    Filed: March 4, 2021
    Publication date: June 24, 2021
    Applicant: AGC Inc.
    Inventors: Shimpei MORITA, Kouichirou TAKAHASHI, Osamu KAGAYA, Takato KAJIHARA, Akiyo NOGAMI
  • Publication number: 20200031708
    Abstract: To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate. A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Applicant: AGC Inc.
    Inventors: Eriko MAEDA, Takato KAJIHARA, Kensuke NAGAI, Yutaka KUROIWA, Osamu KAGAYA, Ryuta SONODA, Hiroyuki HIJIYA
  • Publication number: 20180170795
    Abstract: A glass includes, in mass percentage on an oxide basis, 50 to 85% of SiO2, 0 to 10% of B2O3, 1 to 20% of Na2O, and 20% or less of K2O, and Sb2O3 is substantially not contained. A total content (Ni+Cr) is more than 0 ppm by mass and 1.2 ppm by mass or less. A total iron oxide (t-Fe2O3) in terms of Fe2O3, a ratio (Na2O/Al2O3) and a total content (Al2O3+K2O) fall within specific ranges, respectively. The contents of each component satisfy a specific relationship.
    Type: Application
    Filed: February 14, 2018
    Publication date: June 21, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takato KAJIHARA, Yusuke ARAI, Naoki KANNO, Takahiro SAKAGAMI