Patents by Inventor Junko MIYASAKA

Junko MIYASAKA 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: 20200102241
    Abstract: The present invention pertains to: a tempered glass which is obtained by physically strengthening a glass having an average coefficient of thermal expansion at 50-350° C. of (20×10?7)-(50×10?7)/)° C. and a glass transition temperature of 560° C. or higher; and a tempered glass obtained by physically strengthening a glass containing, in mole percent on an oxide basis, 0-4% of R2O (R2O is defined in the specification) and 5-25% of B2O3.
    Type: Application
    Filed: December 4, 2019
    Publication date: April 2, 2020
    Applicant: AGC Inc.
    Inventors: Junko MIYASAKA, Akio Koike, Hiroyuki Yamamoto
  • Patent number: 10196304
    Abstract: An object is to provide a glass for chemical toughening treatment satisfying low brittleness, low melt viscosity and high chemical toughening characteristics, and a chemically toughened glass using the same. Provided is a glass for chemical toughening treatment containing, in mass % in terms of oxides, SiO2 63 to 76, B2O3 0 to 2, Al2O3 2 to 10, MgO 2 to 12, CaO 0.1 to 8, Na2O 14.5 to 19, K2O 0 to 3, and Fe2O3 0 to 0.5, satisfying a total content of alkali earth metal oxides (RO) being from 5 to 15, satisfying 15×MgO/RO?RO?3, and having a temperature T2 at which a glass viscosity reaches 102 dPa·s being 1,600° C. or lower.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: February 5, 2019
    Assignee: AGC Inc.
    Inventors: Junko Miyasaka, Seiki Ohara
  • Patent number: 10005692
    Abstract: A phase-separated glass for chemical strengthening has a total light reflectance of 10% or more in a wavelength range of 380 nm to 780 nm and a value obtained by dividing a maximum value of the total light reflectance by a minimum value of the total light reflectance of 4.2 or less, when measured in a form of a plate having a thickness of 1 mm.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: June 26, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Seiki Ohara
  • Patent number: 9938181
    Abstract: A white glass includes, in terms of mole percentage on the basis of oxides, from 50% to 74% of SiO2, from 0 to 8% of B2O3, from 1% to 8% of Al2O3, from 0 to 18% of MgO, from 0 to 7% of CaO, from 0 to 10% of SrO, from 0 to 12% of BaO, from 0 to 5% of ZrO2, from 5% to 15% of Na2O and from 2% to 10% of P2O5. In the white glass, a total content of CaO, SrO and BaO is from 1% to 22%, a total content RO of MgO, CaO, SrO and BaO is from 5% to 25% and a ratio CaO/RO of a content of CaO to the RO is 0.7 or less.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: April 10, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Seiki Ohara, Kenji Kitaoka
  • Publication number: 20180088268
    Abstract: The present invention relates to a light diffusion plate including a glass plate having a first main surface and a second main surface opposed to the first main surface, in which the glass plate has a thermal expansion coefficient of ?100×10?7/° C. or more and 500×10?7/° C. or less, and light incident on the first main surface is transmitted from the second main surface while being diffused.
    Type: Application
    Filed: December 1, 2017
    Publication date: March 29, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yuki KONDO, Yuichi KUWAHARA, Junko MIYASAKA, Seiki OHARA, Katsumi SUZUKI
  • Patent number: 9926220
    Abstract: An object of the present invention is to provide a glass for chemical strengthening which is capable of improving strength as compared with an ordinary soda lime silicate glass even when the same chemical strengthening treatment as that in a conventional process is applied and has good devitrification characteristics, a chemically strengthened glass using the glass for chemical strengthening, and a method for producing the chemically strengthened glass. The present invention provides a glass for chemical strengthening having a specific glass composition described in the present specification.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: March 27, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Seiki Ohara, Shuji Yamazaki, Shusaku Akiba, Junichiro Kase
  • Patent number: 9902647
    Abstract: The present invention relates to a method for producing phase-separated glass, sequentially including a melting step of melting a glass, a phase separation step of separating phases in the glass, and a shaping step of shaping the glass, and to the phase-separated glass obtained by the production method.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: February 27, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Seiki Ohara, Takahiro Sakagami
  • 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: 20170260077
    Abstract: A glass for chemical strengthening that is a float-formed glass for chemical strengthening includes, as represented by mass percentage based on oxides, from 65 to 72% of SiO2, from 3.6 to 8.6% of Al2O3, from 3.3 to 6% of MgO, from 6.5 to 9% of CaO, from 13 to 16% of Na2O and from 0 to 0.9% of K2O. In the glass for chemical strengthening, (Na2O+K2O)/Al2O3 is from 2.2 to 5. The glass for chemical strengthening has a sheet thickness (t) of 0.1 mm or more and 2 mm or less. A SnO2 amount of a bottom surface in an unpolished state of the glass for chemical strengthening is 6.2 ?g/cm2 or less (0.1?t?1 mm) or (2t+4.2) ?g/cm2 or less (1<t?2 mm).
    Type: Application
    Filed: May 31, 2017
    Publication date: September 14, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junichiro KASE, Takenori MIURA, Masamichi KAWAKAMI, Junko MIYASAKA
  • Publication number: 20170247284
    Abstract: To provide a glass plate which is hardly broken and which has a high infrared transmittance. A glass plate, which has a thickness of from 1 to 8 mm, has an infrared transmittance T3000 at a wavelength of 3,000 nm of at least 4%, an average thermal expansion coefficient a at from 50 to 350° C. of from 15 to 35×10?7/° C., and a glass composition comprising, as represented by mol% based on oxides, from 50 to 85% of SiO2, from 0.1 to 25% of Al2O3, from 0.1 to 20% of B2O3, from 0 to 20% in total of at least one member selected from MgO, CaO, SrO, BaO and ZnO, and from 0 to 20% in total of at least one member selected from Li2O, Na2O and K2O.
    Type: Application
    Filed: May 15, 2017
    Publication date: August 31, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Junko MIYASAKA, Suguru MURAYAMA, Seiki OHARA, Manabu NISHIZAWA
  • Publication number: 20170166473
    Abstract: Provided are a glass for anti-dazzle processing which has low dependency on the concentration of the processing liquid in carrying out the anti-dazzle processing, and an anti-dazzle glass using the same. A glass for anti-dazzle processing contains, as expressed by mass percentage on the basis of oxides, 60 to 75% of SiO2, 2.5 to 10% of A12O3, 13 to 19% of Na2O, 0 to 1.8% of K2O, 0 to 12% of MgO, 0 to 9% of CaO, and 0 to 4% of ZrO2.
    Type: Application
    Filed: December 27, 2016
    Publication date: June 15, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Junko MIYASAKA, Seiki OHARA
  • Publication number: 20170121220
    Abstract: An object is to provide a glass for chemical toughening treatment satisfying low brittleness, low melt viscosity and high chemical toughening characteristics, and a chemically toughened glass using the same. Provided is a glass for chemical toughening treatment containing, in mass % in terms of oxides, SiO2 63 to 76, B2O3 0 to 2, Al2O3 2 to 10, MgO 2 to 12, CaO 0.1 to 8, Na2O 14.5 to 19, K2O 0 to 3, and Fe2O3 0 to 0.5, satisfying a total content of alkali earth metal oxides (RO) being from 5 to 15, satisfying 15×MgO/RO—RO?3, and having a temperature T2 at which a glass viscosity reaches 102 dPa·s being 1,600° C. or lower.
    Type: Application
    Filed: December 20, 2016
    Publication date: May 4, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Seiki OHARA
  • Publication number: 20170107141
    Abstract: There are provide a glass for chemical strengthening suitable for a display member, having a low compaction and a high accuracy of film forming and patterning on a glass plate (causing less positional displacement) even in a glass plate manufactured by the fusion method or the like at a high cooling rate in glass forming, in a heat treatment at a low temperature (150° C. to 300° C.) in manufacturing the display member, and a chemically strengthened glass obtained using the glass for chemical strengthening. A glass for chemical strengthening obtained by melting and cooling a glass raw material includes, in mass percentage based on oxides, 61% to 75% of SiO2, 2.5% to 10% of Al2O3, 6% to 12% of MgO, 0.1% to 8% of CaO, 14% to 19% of Na2O, and 0% to 1.8% of K2O.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Seiki OHARA
  • Publication number: 20170107142
    Abstract: The present invention relates to a method for producing phase-separated glass, sequentially including a melting step of melting a glass, a phase separation step of separating phases in the glass, and a shaping step of shaping the glass, and to the phase-separated glass obtained by the production method.
    Type: Application
    Filed: December 30, 2016
    Publication date: April 20, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Seiki Ohara, Takahiro Sakagami
  • Patent number: 9580353
    Abstract: The present invention relates to a method for producing phase-separated glass, sequentially including a melting step of melting a glass, a phase separation step of separating phases in the glass, and a shaping step of shaping the glass, and to the phase-separated glass obtained by the production method.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: February 28, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Seiki Ohara, Takahiro Sakagami
  • Patent number: 9546104
    Abstract: A phase-separated glass for chemical strengthening has a total light reflectance of 10% or more in a wavelength range of 380 nm to 780 nm and a value obtained by dividing a maximum value of the total light reflectance by a minimum value of the total light reflectance of more than 4.2, when measured in a form of a plate having a thickness of 1 mm.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: January 17, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Seiki Ohara
  • Publication number: 20170001903
    Abstract: An object of the present invention is to provide a glass for chemical strengthening which is capable of improving strength as compared with an ordinary soda lime silicate glass even when the same chemical strengthening treatment as that in a conventional process is applied and has good devitrification characteristics, a chemically strengthened glass using the glass for chemical strengthening, and a method for producing the chemically strengthened glass. The present invention provides a glass for chemical strengthening having a specific glass composition described in the present specification.
    Type: Application
    Filed: September 15, 2016
    Publication date: January 5, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Junko MIYASAKA, Seiki Ohara, Shuji Yamazaki, Shusaku Akiba, Junichiro Kase
  • Patent number: 9522841
    Abstract: A white glass includes, in terms of mole percentage on the basis of oxides, from 50 to 73% of SiO2, from 0 to 10% of B2O3, from 3 to 17% of Na2O, from 0.5 to 10% of at least one of Nb2O5 and Gd2O3, and from 0.5 to 10% of P2O5. In the white glass, a total content RO of MgO, CaO, SrO and BaO is from 2 to 25%.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: December 20, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko Miyasaka, Seiki Ohara
  • Publication number: 20160355430
    Abstract: A glass is a glass sheet containing, as expressed by mass percentage based on oxides, 63 to 75% of SiO2, 3 to 12% of Al2O3, 3 to 10% of MgO, 0.5 to 10% of CaO, 0 to 3% of SrO, 0 to 3% of BaO, 10 to 18% of Na2O, 0 to 8% of K2O, 0 to 3% of ZrO2, and 0.005 to 0.25% of Fe2O3. The glass has a temperature (T2) at which a viscosity thereof reaches 102 dPa·s of 1525° C. or lower. In the glass, R2O/Al2O3 is 2.0 or more and 4.6 or less (in the formula, the R2O is Na2O+K2O).
    Type: Application
    Filed: June 10, 2016
    Publication date: December 8, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Shuji YAMAZAKI, Akio Koike, Junichiro Kase, Shusaku Akiba, Junko Miyasaka, Seiki Ohara
  • 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