Patents by Inventor Junichiro Kase

Junichiro Kase 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).

  • Patent number: 10065885
    Abstract: A glass sheet for pigment printing contains, as represented by mass percentage on the basis of oxides, from 60% to 75% of SiO2, from 2% to 12% of Al2O3, from 2% to 11% of MgO, from 0% to 10% of CaO, from 0% to 3% of SrO, from 0% to 3% of BaO, from 10% to 18% of Na2O, from 0% to 8% of K2O, and from 0% to 4% of ZrO2, or contains, from 60% to 75% of SiO2, from 1.5% to 12% of Al2O3, from 6% to 12% of MgO, from 0% to 4.5% of CaO, from 0% to 3% of SrO, from 0% to 3% of BaO, from 10% to 18% of Na2O, from 0% to 8% of K2O, and from 0% to 4% of ZrO2.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: September 4, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junichiro Kase, Kazutomo Mori, Thomas Lambricht
  • 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: 9890073
    Abstract: A glass for chemical strengthening is a glass sheet containing, as expressed by mass percentage based on oxides, 60 to 75% of SiO2, 3 to 12% of Al2O3, 2 to 10% of MgO, 0 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, 0 to 0.3% of TiO2, 0.005 to 0.2% of Fe2O3, and 0.02 to 0.4% of SO3. The glass has a sheet thickness of 0.2 mm or more and 1.2 mm or less. A value of ?-OH measured without polishing both front and back surfaces of the glass sheet is lower than a value of ?-OH measured after polishing surface layers of both the front and back surfaces of the glass sheet by 50 ?m or more each.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 13, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventor: Junichiro Kase
  • 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: 20170174565
    Abstract: A glass sheet for pigment printing contains, as represented by mass percentage on the basis of oxides, from 60% to 75% of SiO2, from 2% to 12% of Al2O3, from 2% to 11% of MgO, from 0% to 10% of CaO, from 0% to 3% of SrO, from 0% to 3% of BaO, from 10% to 18% of Na2O, from 0% to 8% of K2O, and from 0% to 4% of ZrO2, or contains, from 60% to 75% of SiO2, from 1.5% to 12% of Al2O3, from 6% to 12% of MgO, from 0% to 4.5% of CaO, from 0% to 3% of SrO, from 0% to 3% of BaO, from 10% to 18% of Na2O, from 0% to 8% of K2O, and from 0% to 4% of ZrO2.
    Type: Application
    Filed: December 28, 2016
    Publication date: June 22, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Junichiro KASE, Kazutomo MORI, Thomas LAMBRICHT
  • Publication number: 20170029318
    Abstract: An object of the present invention is to provide a glass plate capable of suppressing deformation of a glass product that is subject to load in a heat treatment process at a temperature not more than the glass strain point, such as chemical strengthening and coating. The present invention relates to a glass plate for heat treatment, in which the dimensionless index determined by the following formula is 1.6×10?4 or less, the average viscosity ? is log ??15.1 log Pa·s or less, the relationship between the fictive temperature Tf and the annealing point Ta is Tf?(Ta+5), and when the plate thickness h of glass is 7×10?4 m or more, the displacement at the load point during the load applying time period is 78 ?m or less: Dimensionless index=load F×load applying time period/(average viscosity ?×plate thickness h2).
    Type: Application
    Filed: October 13, 2016
    Publication date: February 2, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Yasumasa KATO, Yutaka Ishikawa, Junichiro Kase
  • 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
  • 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
  • Publication number: 20160355432
    Abstract: A glass for chemical strengthening is a glass sheet containing, as expressed by mass percentage based on oxides, 60 to 75% of SiO2, 3 to 12% of Al2O3, 2 to 10% of MgO, 0 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, 0 to 0.3% of TiO2, 0.005 to 0.2% of Fe2O3, and 0.02 to 0.4% of SO3. The glass has a sheet thickness of 0.2 mm or more and 1.2 mm or less. A value of ?-OH measured without polishing both front and back surfaces of the glass sheet is lower than a value of ?-OH measured after polishing surface layers of both the front and back surfaces of the glass sheet by 50 ?m or more each.
    Type: Application
    Filed: June 10, 2016
    Publication date: December 8, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventor: Junichiro KASE
  • Publication number: 20160355431
    Abstract: A chemically strengthened glass contains, as expressed by mass percentage based on oxides, 60% to 75% of SiO2, 3% to 9% of Al2O3, 2% to 10% of MgO, 3% to 10% of CaO, 10% to 18% of Na2O, at most 4% of K2O, 0% to 3% of ZrO2, 0% to 0.3% of TiO2, and 0.02% to 0.4% of SO3. It has a temperature T2 at which a viscosity of a glass melt is 100 dPa·sec of 1530° C. or lower. In a chemically strengthened main surface thereof, it has a depth of a compressive stress layer of 8 ?m or more and a surface compressive stress of 500 MPa or more.
    Type: Application
    Filed: June 10, 2016
    Publication date: December 8, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shusaku Akiba, Akio Koike, Junichiro Kase, Shuji Yamazaki
  • Publication number: 20160083288
    Abstract: A glass for chemical strengthening is a glass plate. The glass plate includes, as represented by mass percentage based on the following oxides, 65 to 72% of SiO2, 3.4 to 8.6% of Al2O3, 3.3 to 6% of MgO, 6.5 to 9% of CaO, 13 to 16% of Na2O, 0 to 1% of K2O, 0 to 0.2% of TiO2, 0.01 to 0.15% of Fe2O3 and 0.02 to 0.4% of SO3. In the glass plate, (Na2O+K2O)/Al2O3 is 1.8 to 5.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 24, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Junichiro KASE, Shuichi AKADA, Jun SASAI, Shusaku AKIBA
  • Patent number: 8324123
    Abstract: To provide a glass plate which has a low B2O3 content and which can be used as a glass plate for e.g. an LCD panel. A glass plate which comprises, as a glass matrix composition as represented by mass % based on oxide, from 53 to 74 mass % of SiO2, from 15 to 23 mass % of Al2O3, from 0 to 3 mass % of B2O3, from 2 to 17 mass % of MgO, from 0 to 12 mass % of CaO, from 0 to 6 mass % of SrO, from 6 to 28 mass % of MgO+CaO+SrO, from 0 to 9 mass % of Na2O, from 0 to 6 mass % of K2O and from 0.8 to 11 mass % of Na2O+K2O, contains from 100 to 500 ppm of SO3, has an average coefficient of thermal expansion from 50 to 350° C. of at most 60×10?7/° C., and has a strain point of at least 600° C.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: December 4, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Yuya Shimada, Manabu Nishizawa, Junichiro Kase
  • Patent number: 8273262
    Abstract: The invention provides a method for etching which is intended for reducing the thickness of a glass substrate, and which attains a high etching rate and is capable of inhibiting haze generation on the glass substrate surface. The invention relates to a method for etching a glass substrate surface, comprising etching the glass substrate surface in an amount of 1-690 ?m in terms of etching amount, in which the etching is conducted with an etchant having an HF concentration of 1-5 wt % and an HCl concentration of 1 wt % or higher.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: September 25, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshitaka Saijo, Yuichi Suzuki, Ryoji Akiyama, Atsuyoshi Takenaka, Junichiro Kase
  • Patent number: 8236717
    Abstract: Provided is a glass plate for a substrate, which comprises, as a glass matrix composition as represented by mass % based on oxide: SiO2: 70 to 80, Al2O3: 0.1 to 5, B2O3: 0 to 3, MgO: 9.5 to 12, where the amount of CaO+SrO+BaO is 0 to 2, and the amount of Na2O+K2O is 12.5 to 15.5, which has a density of at most 2.5 g/cm3, has an average coefficient of thermal expansion from 50 to 350° C. of more than 75×10?7/° C. and at most 87×10?7/° C., has a glass transition point of at least 560° C., has a brittleness of at most 6.5 ?m?1/2, and has a heat shrinkage (C)of at most 20 ppm.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 7, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Manabu Nishizawa, Yuya Shimada, Junichiro Kase
  • Publication number: 20120015798
    Abstract: To provide a glass plate for a substrate, which contains no B2O3 and which can be used as a glass plate for an LCD panel. A glass plate for a substrate, which contains substantially no B2O3, which comprises, as a glass matrix composition as represented by mass % based on oxide of SiO2: 68 to 80, Al2O3: 0.1 to 5, MgO: 9.5 to 12, CaO+SrO+BaO: 0 to 2, and Na2O+K2O: 12.5 to 15.5, and which has a density of at most 2.5 g/cm3, an average coefficient of thermal expansion from 50 to 350° C. of from more than 75×10?7/° C. to at most 87×10?7/° C., a glass transition point of at least 560° C. and a brittleness of at most 6.5 ?m?1/2.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Manabu NISHIZAWA, Yuya Shimada, Junichiro Kase
  • Patent number: 8027012
    Abstract: To provide a liquid crystal display panel which can be produced at low cost by using inexpensive alkali glass for at least an opposing glass substrate, which is free from troubles in a liquid crystal display due to panel warpage attributable to the thermal treatment since such treatment is not required in the production process, and further which is free from panel warpage which tends to bring a trouble in a liquid crystal display derived from the difference in the thermal expansion coefficient by change in ambient temperature at the time of use. A liquid crystal display panel comprising an array glass substrate and an opposing glass substrate facing it, in which a liquid crystal is filled between such substrates, and an ultraviolet curable resin is sealed at a peripheral area, wherein the above opposing glass substrate is an alkali glass substrate, and the difference in thermal expansion coefficient between the above array glass substrate and the above opposing glass substrate is at most 35×10?7/° C.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: September 27, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Tomoyuki Shimizu, Junichiro Kase
  • Patent number: 7951734
    Abstract: A glass plate for a substrate, which contains no B2O3, and which can be as a glass plate for an LCD panel, which comprises, as a glass matrix composition as represented by mass % based on oxide of SiO2: 68 to 80, Al2O3: 0.1 to 5, MgO: 9.5 to 12, CaO+SrO+BaO: 0 to 2, and Na2O+K2O 6 to 14, and which has a density of at most 2.45 g/cm3, an average coefficient of thermal expansion from 50 to 350° C. of at most 75×10?7/° C., a glass transition point of at least 600° C. and a brittleness of at most 6.5 ?m?1/2.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: May 31, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Manabu Nishizawa, Yuya Shimada, Junichiro Kase
  • Patent number: 7838451
    Abstract: To provide an alkali-free glass excellent in the properties for glass substrates to be used for display, excellent in the resistance to reduction, and suitable for forming by a float process. An alkali-free glass consisting essentially of, as represented by mol %: SiO2 at least 60% and less than 66%, Al2O3 0 to 12%, B2O3 5 to 10%, MgO 0 to 18%, CaO 0 to 18%, SrO 0 to 18%, BaO 0 to 6%,? CaO + SrO 10 to 25%,? MgO + CaO + SrO + BaO 15.5 to 30%?? and containing substantially no alkali metal oxide.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: November 23, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Manabu Nishizawa, Junichiro Kase, Kazuhiro Suzuki, Kei Maeda
  • Publication number: 20100224589
    Abstract: The invention provides a method for etching which is intended for reducing the thickness of a glass substrate, and which attains a high etching rate and is capable of inhibiting haze generation on the glass substrate surface. The invention relates to a method for etching a glass substrate surface, comprising etching the glass substrate surface in an amount of 1-690 ?m in terms of etching amount, in which the etching is conducted with an etchant having an HF concentration of 1-5 wt % and an HCl concentration of 1 wt % or higher.
    Type: Application
    Filed: May 18, 2010
    Publication date: September 9, 2010
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yoshitaka SAIJO, Yuichi SUZUKI, Ryoji AKIYAMA, Atsuyoshi TAKENAKA, Junichiro KASE
  • Publication number: 20100190630
    Abstract: To provide a glass plate for a substrate, which contains no B2O3 and which can be used as a glass plate for an LCD panel. A glass plate for a substrate, which contains substantially no B2O3, which comprises, as a glass matrix composition as represented by mass % based on oxide of SiO2: 68 to 80, Al2O3: 0.1 to 5, MgO: 9.5 to 12, CaO+SrO+BaO: 0 to 2, and Na2O+K2O 6 to 14, and which has a density of at most 2.45 g/cm3, an average coefficient of thermal expansion from 50 to 350° C. of at most 75×10?7/° C., a glass transition point of at least 600° C. and a brittleness of at most 6.5 ?m?1/2.
    Type: Application
    Filed: April 1, 2010
    Publication date: July 29, 2010
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Manabu Nishizawa, Yuya Shimada, Junichiro Kase