Patents by Inventor Yutaka Kuroiwa

Yutaka Kuroiwa 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: 10865134
    Abstract: A wavelength-selective transmissive glass has a light transmittance Tmore than 315 nm and 400 nm or less at a wavelength of more than 315 nm and 400 nm or less represented by the formula shown below of 1% or more in terms of a plate thickness of 6 mm and a light transmittance T315 nm or less at a wavelength of 315 nm or less represented by the formula shown below of 60% or less in terms of a plate thickness of 6 mm. Ak is a weighting factor at a wavelength k (nm) for calculating T (light transmittance) defined in ISO-9050:2003, and Tk is a transmittance at the wavelength k (nm) in terms of a plate thickness of 6 mm: Tmore than 315 nm and 400 nm or less=(?k=more than 315400Ak×Tk)/(?k=more than 315400Ak) T315 nm or less=(?k=300315Ak×Tk)/(?k=300315Ak).
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: December 15, 2020
    Assignees: AGC Inc., TSUBOTA LABORATORY, INC.
    Inventors: Kensuke Nagai, Tetsuya Nakashima, Yutaka Kuroiwa, Hiroyuki Hijiya, Masamichi Tanida, Akio Koike, Manabu Nishizawa, Kazuo Tsubota, Toshihide Kurihara, Hidemasa Torii
  • Publication number: 20200355713
    Abstract: A sample measuring apparatus, a reagent container, and a method of measuring a sample are provided. The sample measuring apparatus includes a reagent container holder and a measuring unit. The reagent container holder holds, by suspending, a reagent container that stores a reagent. The measuring unit that measures a sample by using the reagent.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: SYSMEX CORPORATION
    Inventors: Yutaka KAWAMOTO, Tomohiro KUROIWA, Shingo KAIDA
  • Publication number: 20200355712
    Abstract: A sample measuring apparatus and a method of circulating air in a reagent storage are provided. The sample measuring apparatus includes: a measuring unit that measures a sample by using a reagent stored in a reagent container; a reagent storage that stores the reagent container; a reagent container holder arranged in the reagent storage and that holds the reagent container; a fin that circulates air in the reagent storage; and a driving unit that drives the reagent container holder and the fin to rotate.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: SYSMEX CORPORATION
    Inventors: Yutaka KAWAMOTO, Tomohiro KUROIWA, Shingo KAIDA
  • Publication number: 20200355714
    Abstract: A sample measuring apparatus, A reagent container, and a method of measuring a sample are provided. The sample measuring apparatus includes: a container holding unit that holds a reagent container comprising an openable/closable lid portion that covers an opening of the reagent container; a reagent dispensing unit that aspirates a reagent in the reagent container with the lid portion being in an opened state and dispenses the aspirated reagent into a reaction container; a pressing unit that seals the opening, by pressing toward the opening the lid portion laid over the opening; and a measuring unit that measures components contained in a measurement specimen prepared from a sample and the reagent dispensed in the reaction container.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: SYSMEX CORPORATION
    Inventors: Yutaka KAWAMOTO, Tomohiro KUROIWA, Shingo KAIDA
  • Patent number: 10766806
    Abstract: The present invention pertains to a glass for a data storage medium substrate which contains a specific amount of each of SiO2, Al2O3, MgO, CaO, SrO, BaO, Li2O, Na2O, and K2O, in molar percentage based on the oxides, and does not substantially contain B2O3 or ZrO2, wherein the sum of the Li2O, Na2O, and K2O contents (R2O), the molar ratio of the SiO2 content to the Al2O3 content (SiO2/Al2O3), and the molar ratio of the sum of the SiO2 and Al2O3 contents (SiO2+Al2O3) to R2O[(SiO2+Al2O3)/R2O] fall within their specific ranges, formula (1): 90<[SiO2]+2×[Al2O3]+0.8×[RO]?0.5×[R2O] [in formula (1), RO represents the sum of the MgO, CaO, SrO, and BaO contents] is satisfied, and the glass transition point Tg, the alkali resistance, and the acid resistance fall within their specific ranges.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: September 8, 2020
    Assignee: AGC Inc.
    Inventors: Eriko Maeda, Hiroyuki Hijiya, Kensuke Nagai, Tetsuya Nakashima, Yutaka Kuroiwa
  • Publication number: 20200031708
    Abstract: To provide a glass plate for a window material and a window comprising the glass plate, which are less likely to be a barrier to radio transmitting/receiving in use of a radio-utilizing apparatus, and a radio communication apparatus comprising the glass plate. A glass plate having a radio transmittance of at least 20% at a frequency of 100 GHz as calculated as 18 mm thickness, a window comprising the glass plate, and a radio communication apparatus comprising the glass plate.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Applicant: AGC Inc.
    Inventors: Eriko MAEDA, Takato KAJIHARA, Kensuke NAGAI, Yutaka KUROIWA, Osamu KAGAYA, Ryuta SONODA, Hiroyuki HIJIYA
  • Patent number: 10392293
    Abstract: The present invention provides a high-transparency glass having a high fining action at a low temperature and capable of achieving redox lowering more than before. The present invention relates to a glass containing 1 to 500 ppm of a total iron oxide (t-Fe2O3) in terms of Fe2O3, having a redox ([divalent iron (Fe2+) in terms of Fe2O3]/[total (Fe2++Fe3+) of divalent iron (Fe2+) and trivalent iron (Fe3+) in terms of Fe2O3]) of 0% or more and 25% or less, containing, as expressed by mass percentage based on oxides, 50 to 81% of SiO2, 1 to 20% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, and 5 to 27% of MgO+CaO+SrO+BaO, and having a bubble disappearance-starting temperature (TD) of 1485° C. or lower.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 27, 2019
    Assignee: AGC Inc.
    Inventors: Yusaku Matsuo, Yutaka Kuroiwa, Yusuke Arai, Hiroyuki Hijiya, Yuki Kondo
  • Publication number: 20190227092
    Abstract: The present invention is directed to suppress adhesion of a reagent to the periphery of an opening of a reagent container. The reagent container is a reagent container used for a sample measuring apparatus having a suction tube for suctioning a reagent, and includes a reagent, an upper surface part having an opening, a side surface part, and a bottom surface part that defines an internal space in which the reagent is stored, and a suction tube introducing part extending from the upper surface part to a position above the liquid level of the reagent to introduce the suction tube received from above the opening into the internal space.
    Type: Application
    Filed: January 25, 2019
    Publication date: July 25, 2019
    Inventors: Yutaka KAWAMOTO, Tomohiro KUROIWA, Shingo KAIDA
  • Publication number: 20180321434
    Abstract: A glass plate, which has a content of total iron as calculated as Fe2O3 of 5 to 50 ppm and a content of Fe2+ in total iron as calculated as Fe2O3 of from 0.02 to 20 ppm, where the effective optical path length is a distance from an edge surface from which light enters the glass plate to an edge surface on the opposite side, and the composition of the glass plate except for iron substantially contains, as represented by mass percentage based on oxides, from 45 to 80% of SiO2, more than 7% and at most 30% of Al2O3, from 0 to 15% of B2O3, from 0 to 15% of MgO, from 0 to 10% of CaO, from 0 to 20% of Na2O, from 0 to 10% of K2O and from 0 to 10% of ZrO2.
    Type: Application
    Filed: July 10, 2018
    Publication date: November 8, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroyuki HIJIYA, Yusuke ARAI, Yutaka KUROIWA, Tetsuya AKASHIMA, Yuki KONDO
  • Publication number: 20180297888
    Abstract: A wavelength-selective transmissive glass has a light transmittance Tmore than 315 nm and 400 nm or less at a wavelength of more than 315 nm and 400 nm or less represented by the formula shown below of 1% or more in terms of a plate thickness of 6 mm and a light transmittance T315 nm or less at a wavelength of 315 nm or less represented by the formula shown below of 60% or less in terms of a plate thickness of 6 mm. Ak is a weighting factor at a wavelength k (nm) for calculating T (light transmittance) defined in ISO-9050:2003, and Tk is a transmittance at the wavelength k (nm) in terms of a plate thickness of 6 mm: Tmore than 315 nm and 400 nm or less=(?k=more than 315400 Ak×Tk)/(?k=more than 315400 Ak) T315 nm or less=(?k=300315 Ak×Tk)/(?k=300315 Ak).
    Type: Application
    Filed: June 1, 2018
    Publication date: October 18, 2018
    Applicants: ASAHI GLASS COMPANY, LIMITED, TSUBOTA LABORATORY, INC.
    Inventors: Kensuke NAGAI, Tetsuya NAKASHIMA, Yutaka KUROIWA, Hiroyuki HIJIYA, Masamichi TANIDA, AKIO KOIKE, Manabu NISHIZAWA, Kazuo TSUBOTA, Toshihide KURIHARA, Hidemasa TORII
  • Patent number: 10082616
    Abstract: To provide a glass plate excellent in the internal transmittance of light rays in the visible region. A glass plate consisting of multicomponent oxide glass, which has an effective optical path length of from 25 to 200 cm, a thickness of from 0.5 to 10 mm, and an average internal transmittance in the visible region of at least 80% and a chromaticity Y of tristimulus values in the XYZ colorimetric system as defined in JIS Z8701 (Appendix) of at least 90%, under the effective optical path length.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: September 25, 2018
    Assignee: AGC Inc.
    Inventors: Hiroyuki Hijiya, Yusuke Arai, Yutaka Kuroiwa, Tetsuya Nakashima, Yuki Kondo
  • Publication number: 20180222789
    Abstract: The present invention pertains to a glass for a data storage medium substrate which contains a specific amount of each of SiO2, Al2O3, MgO, CaO, SrO, BaO, Li2O, Na2O, and K2O, in molar percentage based on the oxides, and does not substantially contain B2O3 or ZrO2, wherein the sum of the Li2O, Na2O, and K2O contents (R2O), the molar ratio of the SiO2 content to the Al2O3 content (SiO2/Al2O3), and the molar ratio of the sum of the SiO2 and Al2O3 contents (SiO2+Al2O3) to R2O [(SiO2+Al2O3)/R2O] fall within their specific ranges, formula (1): 90<[SiO2]+2×[Al2O3]+0.8×[RO]?0.5×[R2O] [in formula (1), RO represents the sum of the MgO, CaO, SrO, and BaO contents] is satisfied, and the glass transition point Tg, the alkali resistance, and the acid resistance fall within their specific ranges.
    Type: Application
    Filed: April 4, 2018
    Publication date: August 9, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Eriko MAEDA, Hiroyuki HIJIYA, Kensuke NAGAI, Tetsuya NAKASHIMA, Yutaka KUROIWA
  • Publication number: 20180208495
    Abstract: The present invention provides a high-transparency glass having a high fining action at a low temperature and capable of achieving redox lowering more than before. The present invention relates to a glass containing 1 to 500 ppm of a total iron oxide (t-Fe2O3) in terms of Fe2O3, having a redox ([divalent iron (Fe2+) in terms of Fe2O3]/[total (Fe2++Fe3+) of divalent iron (Fe2+) and trivalent iron (Fe3+) in terms of Fe2O3]) of 0% or more and 25% or less, containing, as expressed by mass percentage based on oxides, 50 to 81% of SiO2, 1 to 20% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, and 5 to 27% of MgO+CaO+SrO+BaO, and having a bubble disappearance-starting temperature (TD) of 1485° C. or lower.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 26, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Yusaku Matsuo, Yutaka Kuroiwa, Yusuke Arai, Hiroyuki Hijiya, Yuki Kondo
  • Patent number: 9988298
    Abstract: The present invention provides a high-transparency glass having a high fining action at a low temperature and capable of achieving redox lowering more than before. The present invention relates to a glass containing 1 to 500 ppm of a total iron oxide (t-Fe2O3) in terms of Fe2O3, having a redox ([divalent iron (Fe2+) in terms of Fe2O3]/[total (Fe2++Fe3+) of divalent iron (Fe2+) and trivalent iron (Fe3+) in terms of Fe2O3]) of 0% or more and 25% or less, containing, as expressed by mass percentage based on oxides, 50 to 81% of SiO2, 1 to 20% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, and 5 to 27% of MgO+CaO+SrO+BaO, and having a bubble disappearance-starting temperature (TD) of 1485° C. or lower.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: June 5, 2018
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yusaku Matsuo, Yutaka Kuroiwa, Yusuke Arai, Hiroyuki Hijiya, Yuki Kondo
  • Publication number: 20170121215
    Abstract: The present invention provides a high-transparency glass having a high fining action at a low temperature and capable of achieving redox lowering more than before. The present invention relates to a glass containing 1 to 500 ppm of a total iron oxide (t-Fe2O3) in terms of Fe2O3, having a redox ([divalent iron (Fe2+) in terms of Fe2O3]/[total (Fe2++Fe3+) of divalent iron (Fe2+) and trivalent iron (Fe3+) in terms of Fe2O3]) of 0% or more and 25% or less, containing, as expressed by mass percentage based on oxides, 50 to 81% of SiO2, 1 to 20% of Al2O3, 0 to 5% of B2O3, 5 to 20% of Li2O+Na2O+K2O, and 5 to 27% of MgO+CaO+SrO+BaO, and having a bubble disappearance-starting temperature (TD) of 1485° C. or lower.
    Type: Application
    Filed: January 18, 2017
    Publication date: May 4, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yusaku MATSUO, Yutaka KUROIWA, Yusuke ARAI, Hiroyuki HIJIYA, Yuki KONDO
  • Publication number: 20160238778
    Abstract: To provide a glass plate excellent in the internal transmittance of light rays in the visible region. A glass plate consisting of multicomponent oxide glass, which has an effective optical path length of from 25 to 200 cm, a thickness of from 0.5 to 10 mm, and an average internal transmittance in the visible region of at least 80% and a chromaticity Y of tristimulus values in the XYZ colorimetric system as defined in JIS Z8701 (Appendix) of at least 90%, under the effective optical path length.
    Type: Application
    Filed: April 27, 2016
    Publication date: August 18, 2016
    Applicant: Asahi Glass Company, Limited
    Inventors: Hiroyuki HIJIYA, Yusuke Arai, Yutaka Kuroiwa, Tetsuya Nakashima, Yuki Kondo
  • Publication number: 20150068595
    Abstract: A glass substrate for a Cu—In—Ga—Se solar cell. The glass substrate includes the specific amounts of SiO2, Al2O3, B2O3, MgO, CaO, SrO, BaO, ZrO2, Na2O and K2O. In the glass substrate, MgO+CaO+SrO+BaO is from 10 to 30%, Na2O+K2O is from 8 to 20%, Na2O/K2O is from 0.7 to 2.0, and (2×Na2O-2×MgO—CaO)×(Na2O/K2O) is from 3 to 22. The glass substrate has a glass transition temperature of from 640 to 700° C., an average coefficient of thermal expansion of from 60×10?7 to 110×10?7/° C., and a density of from 2.45 to 2.9 g/cm3.
    Type: Application
    Filed: March 5, 2013
    Publication date: March 12, 2015
    Applicant: Asahi Glass Company, Limited
    Inventors: Yutaka Kuroiwa, Shinichi Amma, Reo Usui, Tomomi Abe, Takeshi Tomizawa
  • Patent number: 8895463
    Abstract: A glass substrate for a CIGS solar cell, having high cell efficiency and high glass transition temperature is provided. The glass substrate for a vapor-deposited CIGS film solar cell has a glass transition temperature of at least 580° C. and an average thermal expansion coefficient of from 70×10?7 to 100×10?7/° C., wherein the ratio of the average total amount of Ca, Sr and Ba within from 10 to 40 nm in depth from the surface of the glass substrate to the total amount of Ca, Sr and Ba at 5,000 nm in depth from the surface of the glass substrate is at most 0.35, and the ratio of the average Na amount within from 10 to 40 nm in depth from the surface of the glass substrate after heat treatment to such average Na amount before the heat treatment is at least 1.5.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: November 25, 2014
    Assignee: Asahi Glass Company, Limited
    Inventors: Yutaka Kuroiwa, Yuichi Yamamoto, Tomomi Abe, Tetsuya Nakashima, Yasushi Kawamoto, Shigeru Niki, Shogo Ishizuka
  • 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