Patents by Inventor Yu HANAWA

Yu HANAWA 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: 10882778
    Abstract: A glass substrate includes, as a glass matrix composition as represented by mole percentage based on oxides, SiO2: 55%-75%, Al2O3: 2%-15%, MgO: 0%-10%, CaO: 0%-10%, SrO: 0%-10%, BaO: 0%-15%, ZrO2: 0%-5%, Na2O: 0%-20%, K2O: 5%-30%, and Li2O: 0%-5.0%. The glass substrate has a total content of alkali metal oxides, as represented by mole percentage based on oxides, of 10%-30%, a value obtained by dividing the total content of alkali metal oxides by the content of SiO2 of 0.50 or smaller, a value obtained by dividing the content of Na2O by a value obtained by subtracting the content of Al2O3 from a total content of Na2O and K2O of 0.90 or smaller, and an average coefficient of thermal expansion ?1 at 50° C.-350° C. of 11 ppm/° C.-16 ppm/° C.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: January 5, 2021
    Assignee: AGC Inc.
    Inventors: Shigeki Sawamura, Kazutaka Ono, Yu Hanawa
  • Patent number: 10562805
    Abstract: A sintered formed body containing a glass in which undesired coloring in a blackish color, incomplete sintering, a lack of strength, and formation of bubbles are suppressed, and an article provided with the same are provided. Provided are a sintered formed body and an article provided with the same, the sintered formed body consisting of a sintered body containing a glass, and having a thick part with a thickness of 60 ?m or more, in which a carbon content from a position of a surface of the thick part to a position at a depth of at least 30 ?m from the surface of the thick part is 0.7 to 15 mass ppm.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: February 18, 2020
    Assignee: AGC Inc.
    Inventors: Yu Hanawa, Masamichi Tanida
  • Patent number: 10515864
    Abstract: The present invention provides a glass substrate in which in a step of sticking a glass substrate and a silicon-containing substrate to each other, bubbles hardly intrude therebetween. The present invention relates to a glass substrate for forming a laminated substrate by lamination with a silicon-containing substrate, having a warpage of 2 ?m to 300 ?m, and an inclination angle due to the warpage of 0.0004° to 0.12°.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: December 24, 2019
    Assignee: AGC Inc.
    Inventors: Yu Hanawa, Shigeki Sawamura, Shuhei Nomura, Kazutaka Ono, Nobuhiko Takeshita, Keisuke Hanashima
  • Publication number: 20190385920
    Abstract: The present invention provides a glass substrate in which in a step of sticking a glass substrate and a silicon-containing substrate to each other, bubbles hardly intrude therebetween. The present invention relates to a glass substrate for forming a laminated substrate by lamination with a silicon-containing substrate, having a warpage of 2 ?m to 300 ?m, and an inclination angle due to the warpage of 0.0004° to 0.12°.
    Type: Application
    Filed: August 29, 2019
    Publication date: December 19, 2019
    Applicant: AGC Inc.
    Inventors: Yu Hanawa, Shigeki Sawamura, Shuhei Nomura, Kazutaka Ono, Nobuhiko Takeshita, Keisuke Hanashima
  • Patent number: 10478784
    Abstract: There is provided a glass substrate for observing minute substance, made of porous glass and capable of separating and capturing a minute substance with a 10 to 500 nm average particle diameter contained in a solution or a suspension, comprising a porous glass substrate having a plurality of pores, wherein the plurality of pores has an average pore diameter ranging from 30 to 110% of the average particle diameter of the minute substance, each of the plurality of pores has a surface pore diameter on an uppermost surface of the glass substrate, a standard deviation of the surface pore diameter is 60% or less of the average particle diameter of the minute substance, and a pore with a pore diameter ranging from 60 to 140% of a pore diameter at peak top in a pore diameter distribution of the plurality of pores occupies 90% or more of total pore volume.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: November 19, 2019
    Assignee: AGC Inc.
    Inventors: Shuji Yamazaki, Shuichiro Kimura, Kenji Kitaoka, Yu Hanawa
  • Publication number: 20180305241
    Abstract: A glass substrate includes, as a glass matrix composition as represented by mole percentage based on oxides, SiO2: 55%-75%, Al2O3: 2%-15%, MgO: 0%-10%, CaO: 0%-10%, SrO: 0%-10%, BaO: 0%-15%, ZrO2: 0%-5%, Na2O: 0%-20%, K2O: 5%-30%, and Li2O: 0%-5.0%. The glass substrate has a total content of alkali metal oxides, as represented by mole percentage based on oxides, of 10%-30%, a value obtained by dividing the total content of alkali metal oxides by the content of SiO2 of 0.50 or smaller, a value obtained by dividing the content of Na2O by a value obtained by subtracting the content of Al2O3 from a total content of Na2O and K2O of 0.90 or smaller, and an average coefficient of thermal expansion ?1 at 50° C.-350° C. of 11 ppm/° C.-16 ppm/° C.
    Type: Application
    Filed: June 26, 2018
    Publication date: October 25, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Shigeki SAWAMURA, Kazutaka Ono, Yu Hanawa
  • Publication number: 20180222787
    Abstract: A glass substrate contains, as a glass matrix composition as represented by mole percentage based on oxides, SiO2: 58-75%, Al2O3: 4.5-16%, B2O3: 0-6%, MgO: 0-6%, CaO: 0-6%, SrO: 5-20%, BaO: 5-20%, and MgO+CaO+SrO+BaO: 15-40%. The glass substrate has an alkali metal oxide content of 0-0.1% as represented by mole percentage based on oxides. The glass substrate has an average coefficient of thermal expansion ? of 56-90 (×10?7/° C.) at 50° C.-350° C.
    Type: Application
    Filed: March 29, 2018
    Publication date: August 9, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yu HANAWA, Kazutaka Ono, Shigeki Sawamura
  • Publication number: 20180151408
    Abstract: A glass substrate is laminated with a substrate containing silicon to thereby form a laminated substrate. The glass substrate has a concave surface and a convex surface and has one or more marks that distinguish between the concave surface and the convex surface.
    Type: Application
    Filed: January 23, 2018
    Publication date: May 31, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yu Hanawa, Shuhei Nomura, Kazutaka Ono, Nobuhiko Takeshita, Keisuke Hanashima
  • Publication number: 20180118610
    Abstract: A sintered formed body containing a glass in which undesired coloring in a blackish color, incomplete sintering, a lack of strength, and formation of bubbles are suppressed, and an article provided with the same are provided. Provided are a sintered formed body and an article provided with the same, the sintered formed body consisting of a sintered body containing a glass, and having a thick part with a thickness of 60 ?m or more, in which a carbon content from a position of a surface of the thick part to a position at a depth of at least 30 ?m from the surface of the thick part is 0.7 to 15 mass ppm.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yu HANAWA, Masamichi TANIDA
  • Publication number: 20180082914
    Abstract: The present invention provides a glass substrate in which in a step of sticking a glass substrate and a silicon-containing substrate to each other, bubbles hardly intrude therebetween. The present invention relates to a glass substrate for forming a laminated substrate by lamination with a silicon-containing substrate, having a warpage of 2 ?m to 300 ?m, and an inclination angle due to the warpage of 0.0004° to 0.12°.
    Type: Application
    Filed: November 27, 2017
    Publication date: March 22, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yu HANAWA, Shigeki SAWAMURA, Shuhei NOMURA, Kazutaka ONO, Nobuhiko TAKESHITA, Keisuke HANASHIMA
  • Publication number: 20170348647
    Abstract: There is provided a glass substrate for observing minute substance, made of porous glass and capable of separating and capturing a minute substance with a 10 to 500 nm average particle diameter contained in a solution or a suspension, comprising a porous glass substrate having a plurality of pores, wherein the plurality of pores has an average pore diameter ranging from 30 to 110% of the average particle diameter of the minute substance, each of the plurality of pores has a surface pore diameter on an uppermost surface of the glass substrate, a standard deviation of the surface pore diameter is 60% or less of the average particle diameter of the minute substance, and a pore with a pore diameter ranging from 60 to 140% of a pore diameter at peak top in a pore diameter distribution of the plurality of pores occupies 90% or more of total pore volume.
    Type: Application
    Filed: August 22, 2017
    Publication date: December 7, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Shuji YAMAZAKI, Shuichiro KIMURA, Kenji KITAOKA, Yu HANAWA
  • Publication number: 20140209169
    Abstract: A glass substrate for a CdTe solar cell includes a base composition includes, in terms of mol % on a basis of following oxides: from 60 to 75% of SiO2; from 1 to 7.5% of Al2O3; from 0 to 1% of B2O3; from 8.5 to 12.5% of MgO; from 1 to 6.5% of CaO; from 0 to 3% of SrO; from 0 to 3% of BaO; from 0 to 3% of ZrO2; from 1 to 8% of Na2O; and from 2 to 12% of K2O, wherein MgO+CaO+SrO+BaO is from 10 to 24%, Na2O+K2O is from 5 to 15%, MgO/Al2O3 is 1.3 or more, (2Na2O+K2O+SrO+BaO)/(Al2O3+ZrO2) is 3.3 or less, Na2O/K2O is from 0.2 to 2.0, Al2O3??0.94MgO+11, and CaO?0.48MgO+6.5.
    Type: Application
    Filed: March 28, 2014
    Publication date: July 31, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yu HANAWA, Yutaka KUROIWA, Tetsuya NAKASHIMA, Yuki KONDO
  • Publication number: 20130306145
    Abstract: A glass substrate for a CIGS solar cell containing specific amounts of SiO2, Al2O3, B2O3, MgO, CaO, SrO, BaO, ZrO2, TiO2, Na2O and K2O, respectively. The glass substrate satisfies the specific requirements regarding MgO+CaO+SrO+BaO, Na2O+K2O, MgO/Al2O3, (2Na2O+K2O+SrO+BaO)/(Al2O3+ZrO2), Na2O/K2O, the relation of Al2O3 and MgO, and the relation of CaO and MgO, respectively. The glass substrate has a glass transition temperature of 640° C. or higher, an average coefficient of thermal expansion within a range of 50 to 350° C. of 70×10?7 to 90×10?7/° C., the temperature (T4) of 1,230° C. or lower, the temperature (T2) of 1,650° C. or lower, and a density of 2.7 g/cm3 or less. The glass substrate satisfies the relationship of T4?TL??30° C.
    Type: Application
    Filed: July 29, 2013
    Publication date: November 21, 2013
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yu HANAWA, Yutaka Kuroiwa, Tetsuya Nakashima, Reo Usui, Takeshi Tomizawa, Tomomi Sekine
  • Publication number: 20130233386
    Abstract: A glass substrate for a Cu—In—Ga—Se solar cell. The glass substrate contains specific oxides with the specific amounts, respectively. The glass substrate has a glass transition temperature of from 650 to 750° C., an average coefficient of thermal expansion within a range of from 50 to 350° C. of from 75×10?7 to 95×10?7/° C., a relationship between a temperature (T4), at which a viscosity reaches 104 dPa·s, and a devitrification temperature (TL) of T4?TL??30° C., a density of 2.6 g/cm3 or less, and a brittleness index of less than 7,000 m?1/2.
    Type: Application
    Filed: April 22, 2013
    Publication date: September 12, 2013
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yu HANAWA, Yutaka KUROIWA, Tetsuya NAKASHIMA, Reo USUI