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: 20160083289
    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: Application
    Filed: December 3, 2015
    Publication date: March 24, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: JUNKO MIYASAKA, SEIKI OHARA
  • Publication number: 20150329409
    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: Application
    Filed: July 28, 2015
    Publication date: November 19, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Seiki OHARA, Kenji KITAOKA
  • Publication number: 20150291469
    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: April 13, 2015
    Publication date: October 15, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Seiki Ohara, Takahiro Sakagami
  • Publication number: 20150266770
    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: Application
    Filed: June 8, 2015
    Publication date: September 24, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Seiki Ohara
  • Publication number: 20150266771
    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: Application
    Filed: June 8, 2015
    Publication date: September 24, 2015
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Seiki OHARA
  • 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: 20150097304
    Abstract: The present invention relates to a TiO2-containing quartz glass substrate for an imprint mold having a main surface and a side surface, in which the side surface has an arithmetic average roughness (Ra) of 1 nm or less, and the side surface has a root mean square (MSFR_rms) of concaves and convexes in the wavelength region of from 10 ?m to 1 mm being 10 nm or less.
    Type: Application
    Filed: December 15, 2014
    Publication date: April 9, 2015
    Applicant: Asahi Glass Company, Limited
    Inventors: Akio KOIKE, Junko Miyasaka, Hiroshi Nakanishi
  • Publication number: 20130316890
    Abstract: The present invention relates to a method for producing a silica glass body containing titania, containing: a flame hydrolysis step of feeding a silica (SiO2) precursor and a titania (TiO2) precursor into an oxyhydrogen flame and causing a hydrolysis reaction in the flame to form silica glass fine particles containing titania, in which in the flame hydrolysis step, a reaction rate of the hydrolysis reaction of the silica precursor is 80% or more.
    Type: Application
    Filed: July 31, 2013
    Publication date: November 28, 2013
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Junko MIYASAKA, Tomonori Ogawa, Masahiro Kawagishi, Masaaki Takata
  • Patent number: 8567214
    Abstract: The present invention relates to a method for producing a glass body containing: hydrolyzing a silicon compound and a compound containing a metal serving as a dopant, in a flame projected from a burner to form glass fine particles; and depositing and growing the formed glass fine particles on a base material, in which a raw material mixed gas containing a gas of the silicon compound, a gas of the compound containing a metal serving as a dopant, and either one of a combustible gas and a combustion supporting gas is fed into a central nozzle (A) positioning in the center of the burner; the other gas of the combustible gas and the combustion supporting gas is fed into a nozzle (B) different from the central nozzle (A) of the burner; a combustible gas or a combustion supporting gas is arbitrarily fed into a nozzle different from the nozzles (A) and (B); and a flow rate of the raw material mixed gas is 50% or more and not more than 90% of the largest flow rate among flow rate(s) of the combustible gas(ses) and the
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: October 29, 2013
    Assignee: Asahi Glass Company, Limited
    Inventors: Junko Miyasaka, Akio Koike, Tomonori Ogawa, Masahiro Kawagishi
  • Patent number: 8546283
    Abstract: The present invention relates to a substrate for EUV lithography optical member, comprising a silica glass containing TiO2, in which the substrate has two opposite surfaces, and the substrate has temperatures at which a coefficient of linear thermal expansion (CTE) is 0 ppb/° C. (Cross-Over Temperature: COT), and in which the two opposite surfaces have difference in the COTs of 5° C. or more.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: October 1, 2013
    Assignee: Asahi Glass Company, Limited
    Inventors: Junko Miyasaka, Akio Koike, Tomonori Ogawa
  • Publication number: 20120264584
    Abstract: The present invention relates to a substrate for EUV lithography optical member, comprising a silica glass containing TiO2, in which the substrate has two opposite surfaces, and the substrate has temperatures at which a coefficient of linear thermal expansion (CTE) is 0 ppb/° C. (Cross-Over Temperature: COT), and in which the two opposite surfaces have difference in the COTs of 5° C. or more.
    Type: Application
    Filed: June 25, 2012
    Publication date: October 18, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Junko Miyasaka, Akio Koike, Tomonori Ogawa
  • Publication number: 20120205343
    Abstract: The present invention relates to a method for producing a silica glass substrate for an imprint mold, containing: obtaining a glass body from a glass-forming raw material containing an SiO2 precursor; machining the glass body into a glass substrate having a predetermined shape; and removing an affected layer on a surface of the glass substrate, to produce a silica glass substrate for an imprint mold having a fictive temperature distribution in a region from the surface to a depth of 10 ?m on the side to be subjected to a transfer pattern formation of the glass substrate being within ±30° C.
    Type: Application
    Filed: April 12, 2012
    Publication date: August 16, 2012
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Akio Koike, Junko Miyasaka
  • Publication number: 20110314868
    Abstract: The present invention relates to a method for producing a glass body containing: hydrolyzing a silicon compound and a compound containing a metal serving as a dopant, in a flame projected from a burner to form glass fine particles; and depositing and growing the formed glass fine particles on a base material, in which a raw material mixed gas containing a gas of the silicon compound, a gas of the compound containing a metal serving as a dopant, and either one of a combustible gas and a combustion supporting gas is fed into a central nozzle (A) positioning in the center of the burner; the other gas of the combustible gas and the combustion supporting gas is fed into a nozzle (B) different from the central nozzle (A) of the burner; a combustible gas or a combustion supporting gas is arbitrarily fed into a nozzle different from the nozzles (A) and (B); and a flow rate of the raw material mixed gas is 50% or more and not more than 90% of the largest flow rate among flow rate(s) of the combustible gas(ses) and the
    Type: Application
    Filed: June 27, 2011
    Publication date: December 29, 2011
    Applicant: Asahi Glass Company, Limited
    Inventors: Junko MIYASAKA, Akio KOIKE, Tomonori OGAWA, Masahiro KAWAGISHI