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).
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Publication number: 20200102241Abstract: 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: ApplicationFiled: December 4, 2019Publication date: April 2, 2020Applicant: AGC Inc.Inventors: Junko MIYASAKA, Akio Koike, Hiroyuki Yamamoto
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Patent number: 10196304Abstract: 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: GrantFiled: December 20, 2016Date of Patent: February 5, 2019Assignee: AGC Inc.Inventors: Junko Miyasaka, Seiki Ohara
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Patent number: 10005692Abstract: 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: GrantFiled: June 8, 2015Date of Patent: June 26, 2018Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Seiki Ohara
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Patent number: 9938181Abstract: 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: GrantFiled: July 28, 2015Date of Patent: April 10, 2018Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Seiki Ohara, Kenji Kitaoka
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Publication number: 20180088268Abstract: 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: ApplicationFiled: December 1, 2017Publication date: March 29, 2018Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Yuki KONDO, Yuichi KUWAHARA, Junko MIYASAKA, Seiki OHARA, Katsumi SUZUKI
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Patent number: 9926220Abstract: 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: GrantFiled: September 15, 2016Date of Patent: March 27, 2018Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Seiki Ohara, Shuji Yamazaki, Shusaku Akiba, Junichiro Kase
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Patent number: 9902647Abstract: 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: GrantFiled: December 30, 2016Date of Patent: February 27, 2018Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Seiki Ohara, Takahiro Sakagami
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Patent number: 9771300Abstract: 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: GrantFiled: January 23, 2015Date of Patent: September 26, 2017Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Takahiro Sakagami, Seiki Ohara, Junko Miyasaka, Hiroyuki Hijiya, Kazutaka Ono
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Publication number: 20170260077Abstract: 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: ApplicationFiled: May 31, 2017Publication date: September 14, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Junichiro KASE, Takenori MIURA, Masamichi KAWAKAMI, Junko MIYASAKA
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Publication number: 20170247284Abstract: 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: ApplicationFiled: May 15, 2017Publication date: August 31, 2017Applicant: Asahi Glass Company, LimitedInventors: Junko MIYASAKA, Suguru MURAYAMA, Seiki OHARA, Manabu NISHIZAWA
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Publication number: 20170166473Abstract: 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: ApplicationFiled: December 27, 2016Publication date: June 15, 2017Applicant: Asahi Glass Company, LimitedInventors: Junko MIYASAKA, Seiki OHARA
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Publication number: 20170121220Abstract: 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: ApplicationFiled: December 20, 2016Publication date: May 4, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Junko MIYASAKA, Seiki OHARA
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Publication number: 20170107142Abstract: 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: ApplicationFiled: December 30, 2016Publication date: April 20, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Junko MIYASAKA, Seiki Ohara, Takahiro Sakagami
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Publication number: 20170107141Abstract: 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: ApplicationFiled: December 29, 2016Publication date: April 20, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Junko MIYASAKA, Seiki OHARA
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Patent number: 9580353Abstract: 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: GrantFiled: April 13, 2015Date of Patent: February 28, 2017Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Seiki Ohara, Takahiro Sakagami
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Patent number: 9546104Abstract: 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: GrantFiled: June 8, 2015Date of Patent: January 17, 2017Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Seiki Ohara
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Publication number: 20170001903Abstract: 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: ApplicationFiled: September 15, 2016Publication date: January 5, 2017Applicant: Asahi Glass Company, LimitedInventors: Junko MIYASAKA, Seiki Ohara, Shuji Yamazaki, Shusaku Akiba, Junichiro Kase
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Patent number: 9522841Abstract: 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: GrantFiled: December 3, 2015Date of Patent: December 20, 2016Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Seiki Ohara
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Publication number: 20160355430Abstract: 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: ApplicationFiled: June 10, 2016Publication date: December 8, 2016Applicant: Asahi Glass Company, LimitedInventors: Shuji YAMAZAKI, Akio Koike, Junichiro Kase, Shusaku Akiba, Junko Miyasaka, Seiki Ohara
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Patent number: 9487440Abstract: 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: GrantFiled: October 27, 2014Date of Patent: November 8, 2016Assignee: ASAHI GLASS COMPANY, LIMITEDInventors: Junko Miyasaka, Takahiro Sakagami, Seiki Ohara, Kosho Akatsuka, Manuel Reyes Diaz, Kazutaka Ono, Hiroyuki Hijiya