Patents by Inventor Hiroyuki Hijiya

Hiroyuki Hijiya 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: 20180050954
    Abstract: To provide a highly transmissive glass and a light guide that allow high internal transmittance of plate glass to be maintained and the internal transmittance spectrum of the plate to be flattened without lowering the redox of iron to a value equal to or more than a certain value. This glass article comprises a glass which includes 1 to 80 mass ppm of total iron oxide (t-Fe2O3) in terms of Fe2O3, has a redox of iron of 0 to 50% and includes 0.01 to 4.0 mass ppm of NiO. The glass article and the light guide comprising the glass article are characterized in that an A value of the internal transmittance spectrum flatness is 0.83 or more.
    Type: Application
    Filed: November 1, 2017
    Publication date: February 22, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Naoya WADA, Yusuke ARAI, Hiroyuki HIJIYA, Yuki KONDO
  • Publication number: 20180050953
    Abstract: The present invention relates to a glass article having high transmittance, while suppressing the discoloration and the solarization of the glass. The glass article is provided by controlling the contents of cerium oxide and iron oxide in the glass composition within the optimum range, further controlling the contents of manganese oxide and iron oxide in the glass composition within the optimum range, and controlling the basicity of the alkaline earth metal oxides in the glass composition depending on the iron amount contained in the glass.
    Type: Application
    Filed: October 2, 2017
    Publication date: February 22, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Seiji INABA, Yusuke ARAI, Hiroyuki HIJIYA
  • Publication number: 20180037491
    Abstract: The present invention aims to provide a heat-ray- and ultraviolet-absorbing glass plate having low solar transmittance and ultraviolet transmittance, having a high visible light transmittance, and containing a small amount of bubbles. The present invention relates to a heat-ray- and ultraviolet-absorbing glass plate that is a soda lime glass having a specific composition, having a mass proportion of divalent iron to the total iron being 50% or more, and having, as a value calculated as 4 mm thickness of the glass plate, a visible light transmittance Tv of 66% or more, a solar transmittance Te of 65% or less, a ratio Tv/Te of Tv and Te of 1.3 or more, and an ultraviolet transmittance Tuv of 50% or less.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 8, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Hiroyuki HIJIYA, Kensuke Nagai, Eriko Maeda
  • Publication number: 20170334765
    Abstract: To provide a highly transmissive glass and a light guide that allow high internal transmittance of plate glass to be maintained and the internal transmittance spectrum of the plate to be flattened without lowering the redox of iron to a value equal to or more than a certain value. This glass article comprises a glass which includes 1 to 80 mass ppm of total iron oxide (t-Fe2O3) in terms of Fe2O3, has a redox of iron of 0 to 50% and includes 0.01 to 4.0 mass ppm of NiO. The glass article and the light guide comprising the glass article are characterized in that an A value of the internal transmittance spectrum flatness is 0.83 or more.
    Type: Application
    Filed: August 8, 2017
    Publication date: November 23, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Naoya WADA, Yusuke ARAI, Hiroyuki HIJIYA, Yuki KONDO
  • Patent number: 9771300
    Abstract: A white glass contains, in terms of mole percentage on the basis of the following oxides, from 50 to 80% of SiO2, from 0 to 10% of Al2O3, from 11 to 30% of MgO, from 0 to 15% of Na2O and from 0.5 to 15% of P2O5.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: September 26, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takahiro Sakagami, Seiki Ohara, Junko Miyasaka, Hiroyuki Hijiya, Kazutaka Ono
  • Publication number: 20170121215
    Abstract: The present invention provides a high-transparency glass having a high fining action at a low temperature and capable of achieving redox lowering more than before. The present invention relates to a glass containing 1 to 500 ppm of a total iron oxide (t-Fe2O3) in terms of Fe2O3, having a redox ([divalent iron (Fe2+) in terms of Fe2O3]/[total (Fe2++Fe3+) of divalent iron (Fe2+) and trivalent iron (Fe3+) in terms of Fe2O3]) of 0% or more and 25% or less, containing, as expressed by mass percentage based on oxides, 50 to 81% of SiO2, 1 to 20% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, and 5 to 27% of MgO+CaO+SrO+BaO, and having a bubble disappearance-starting temperature (TD) of 1485° C. or lower.
    Type: Application
    Filed: January 18, 2017
    Publication date: May 4, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yusaku MATSUO, Yutaka KUROIWA, Yusuke ARAI, Hiroyuki HIJIYA, Yuki KONDO
  • Publication number: 20170066681
    Abstract: A glass plate for a light guide plate includes a first glass layer; a second glass layer facing the first glass layer; and a third glass layer that is an intermediate glass layer formed between the first glass layer and the second glass layer, wherein the glass plate is provided with a three layer structure in a plate thickness direction, and wherein the glass plate satisfies t1C/(t1B1+t1B2+t1C)<0.03 . . . (1); n1C>n1B1 . . . (2); and n1C>n1B2 . . . (3), where t1B1 is a thickness of the first glass layer, t1B2 is a thickness of the second glass layer, t1C is a thickness of the third glass layer, n1B1 is a refractive index of the first glass layer, n1B2 is a refractive index of the second glass layer, and n1C is a refractive index of the third glass layer.
    Type: Application
    Filed: November 16, 2016
    Publication date: March 9, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Naoya WADA, Yusuke ARAI, Hiroyuki HIJIYA
  • Publication number: 20170023726
    Abstract: A glass plate for a light guide plate includes a light emitting surface; and a light scattering surface that is opposite to the light emitting surface, wherein a refractive index distribution is provided between the light emitting surface and the light scattering surface in a plate thickness direction, and wherein a refractive index calculated from a measured value of reflectance of the light scattering surface is greater than a refractive index of an inner part of the glass plate measured by a V block method after each of the light emitting surface and the light scattering surface is polished and removed by 100 microns.
    Type: Application
    Filed: October 5, 2016
    Publication date: January 26, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Naoya WADA, Yusuke ARAI, Hiroyuki HIJIYA
  • Patent number: 9487440
    Abstract: A process for producing a chemically strengthened glass is provided. The method for producing a chemically strengthened glass includes subjecting a phase-separated glass to an ion exchange treatment. A chemically strengthened glass which is obtained by the process and a phase-separated glass which has been subjected to the ion exchange treatment are also provided.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: November 8, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Takahiro Sakagami, Seiki Ohara, Kosho Akatsuka, Manuel Reyes Diaz, Kazutaka Ono, Hiroyuki Hijiya
  • Patent number: 9428415
    Abstract: To provide glass having a favorable color tone, and its production process. Glass comprising, as represented by mass percentage based on oxides, at least 60% and at most 75% of SiO2, at least 8% and at most 20% of Na2O, at least 4.5% of MgO, at least 1% and at most 10% of CaO, and at least 0.01% and at most 0.5% of Er2O3.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: August 30, 2016
    Assignee: Asahi Glass Company, Limited
    Inventors: Yuki Kondo, Yuya Shimada, Hiroyuki Hijiya
  • Publication number: 20160238778
    Abstract: To provide a glass plate excellent in the internal transmittance of light rays in the visible region. A glass plate consisting of multicomponent oxide glass, which has an effective optical path length of from 25 to 200 cm, a thickness of from 0.5 to 10 mm, and an average internal transmittance in the visible region of at least 80% and a chromaticity Y of tristimulus values in the XYZ colorimetric system as defined in JIS Z8701 (Appendix) of at least 90%, under the effective optical path length.
    Type: Application
    Filed: April 27, 2016
    Publication date: August 18, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroyuki HIJIYA, Yusuke Arai, Yutaka Kuroiwa, Tetsuya Nakashima, Yuki Kondo
  • Publication number: 20150140336
    Abstract: A white glass contains, in terms of mole percentage on the basis of the following oxides, from 50 to 80% of SiO2, from 0 to 10% of Al2O3, from 11 to 30% of MgO, from 0 to 15% of Na2O and from 0.5 to 15% of P2O5.
    Type: Application
    Filed: January 23, 2015
    Publication date: May 21, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Takahiro SAKAGAMI, Seiki OHARA, Junko MIYASAKA, Hiroyuki HIJIYA, Kazutaka ONO
  • Publication number: 20150111030
    Abstract: A process for producing a chemically strengthened glass is provided. The method for producing a chemically strengthened glass includes subjecting a phase-separated glass to an ion exchange treatment. A chemically strengthened glass which is obtained by the process and a phase-separated glass which has been subjected to the ion exchange treatment are also provided.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 23, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Takahiro SAKAGAMI, Seiki OHARA, Kosho AKATSUKA, Manuel Diaz REYES, Kazutaka ONO, Hiroyuki HIJIYA
  • Publication number: 20150045202
    Abstract: To provide glass having a favorable color tone, and its production process. Glass comprising, as represented by mass percentage based on oxides, at least 60% and at most 75% of SiO2, at least 8% and at most 20% of Na2O, at least 4.5% of MgO, at least 1% and at most 10% of CaO, and at least 0.01% and at most 0.5% of Er2O3.
    Type: Application
    Filed: October 27, 2014
    Publication date: February 12, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yuki KONDO, Yuya Shimada, Hiroyuki Hijiya