Patents by Inventor Mitsuhiro Kawazu

Mitsuhiro Kawazu 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: 11661519
    Abstract: A low-reflection film-coated transparent substrate of the present invention includes a transparent substrate and a low-reflection film formed on at least one principal surface of the transparent substrate. The low-reflection film is a porous film including: fine silica particles being solid and spherical and having an average particle diameter of 80 to 150 nm; and a binder containing silica as a main component, the fine silica particles being bound by the binder. The binder further contains an aluminum compound. The low-reflection film contains as components: 55 to 70 mass % of the fine silica particles; 25 to 40 mass % of the silica of the binder; 0.1 to 1.5 mass % of the aluminum compound in terms of Al2O3; and 0.25 to 3% of an organic component. The low-reflection film has a thickness of 80 to 800 nm. A transmittance gain is 2.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: May 30, 2023
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Mizuho Koyo, Tatsuhiro Nakazawa, Mitsuhiro Kawazu
  • Patent number: 11442200
    Abstract: A low-reflection coated glass sheet of the present invention includes a glass sheet and a low-reflection coating. The low-reflection coating is formed on at least a portion of one principal surface of the glass sheet and contains a binder containing silica as a main component, fine silica particles bound by the binder, and fine titania particles bound by the binder. The low-reflection coating satisfies the following relationships: 30 mass %<CSP<68 mass %; 12 mass %?CTP<50 mass %; 20 mass %<CBinder<43.75 mass %; CTP/CBinder?0.6; CBinder<25 mass % in the case of CSP?55 mass %; and CTP>20 mass % in the case of CSP<55 mass %. The low-reflection coated glass sheet has a transmittance gain of 2.0% or more.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: September 13, 2022
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Mizuho Koyo, Tatsuhiro Nakazawa, Mitsuhiro Kawazu
  • Patent number: 11214129
    Abstract: A windshield according to an aspect of the present invention is a windshield for an automobile on which an information acquisition device capable of acquiring information from the outside of a vehicle by emitting and/or receiving light can be arranged. The windshield includes; a glass plate including an information acquisition region that is opposite to the information acquisition device and through which the light passes; and an antifog laminate that includes a heat blocking layer and an antifog layer with antifog properties layered on one surface of the heat blocking layer, and that is layered on a surface on a vehicle interior side of the information acquisition region while the other surface of the heat blocking layer faces the surface on the vehicle interior side of the information acquisition region.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: January 4, 2022
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Kazuaki Oya, Toyoyuki Teranishi, Fumiyoshi Kondo, Mitsuhiro Kawazu, Kazutaka Kamitani, Yohei Shimokawa
  • Publication number: 20210115263
    Abstract: A low-reflection film-coated transparent substrate of the present invention includes a transparent substrate and a low-reflection film formed on at least one principal surface of the transparent substrate. The low-reflection film is a porous film including: fine silica particles being solid and spherical and having an average particle diameter of 80 to 150 nm; and a binder containing silica as a main component, the fine silica particles being bound by the binder. The binder further contains an aluminum compound. The low-reflection film contains as components: 55 to 70 mass % of the fine silica particles; 25 to 40 mass % of the silica of the binder; 0.1 to 1.5 mass % of the aluminum compound in terms of Al2O3; and 0.25 to 3% of an organic component. The low-reflection film has a thickness of 80 to 800 nm. A transmittance gain is 2.
    Type: Application
    Filed: April 19, 2018
    Publication date: April 22, 2021
    Inventors: Mizuho KOYO, Tatsuhiro NAKAZAWA, Mitsuhiro KAWAZU
  • Publication number: 20200223188
    Abstract: An antifog film according to an aspect of the present invention is an antifog film to be attached to a glass plate. The antifog film includes a substrate layer; an antifog layer with antifog properties layered on one surface of the substrate layer; and a sticky layer layered on the other surface of the substrate layer. A release sheet is attached to the sticky layer, and a protective film is attached to the antifog layer.
    Type: Application
    Filed: July 14, 2017
    Publication date: July 16, 2020
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Kazuaki OYA, Toyoyuki TERANISHI, Fumiyoshi KONDO, Mitsuhiro KAWAZU, Kazutaka KAMITANI, Yohei SHIMOKAWA
  • Patent number: 10600923
    Abstract: The low-reflection coating of the present invention is adapted to be provided on at least one principal surface of a substrate. The low-reflection coating is a porous film having a thickness of 80 to 800 nm, the porous film including: fine silica particles being solid and spherical and having an average particle diameter of 80 to 600 nm; and a binder containing silica as a main component and containing a hydrophobic group, the fine silica particles being bound by the binder. The low-reflection coating contains 35 to 70 mass % of the fine silica particles, 25 to 64 mass % of the silica of the binder, and 0.2 to 10 mass % of the hydrophobic group of the binder. The low-reflection coating produces a transmittance gain of 1.5% or more when provided on the substrate.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: March 24, 2020
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Mizuho Koyo, Mitsuhiro Kawazu
  • Publication number: 20200079185
    Abstract: Provided is a windshield 1 suitable for preventing fogging of a glass sheet facing a light path space and for maintaining high accuracy of information acquired by an information acquisition device. A water-absorbing film 81 or an anti-fogging member 8 including the water-absorbing film 81 is disposed on a surface in contact with a light path space 41, the surface being at least one selected from a surface of a glass sheet 5 and a surface of members 61 and 62 serving the function of fixing of an information acquisition device 2 and/or light shielding for the light path space. The water-absorbing film has a saturated water absorption Ws of 1 g/m2 or more. The water-absorbing film satisfies at least one condition selected from the condition A1 that a water vapor adsorption isotherm is a downwardly convex curve at a relative humidity of 20 to 90% and the condition B1 that an increase in water absorption AbH with increasing relative humidity from 70% to 95% is more than 35% of Ws.
    Type: Application
    Filed: December 8, 2017
    Publication date: March 12, 2020
    Inventors: Fumiyoshi KONDO, Kazuaki OYA, Kazutaka KAMITANI, Yohei SHIMOKAWA, Mitsuhiro KAWAZU, Toyoyuki TERANISHI
  • Patent number: 10478803
    Abstract: The present invention provides a glass article including a photocatalyst film 1 containing silicon oxide particles 6 and titanium oxide particles 5, and a glass sheet 2. Assuming that the photocatalyst film 1 has a film thickness T, 80% or more of the titanium oxide particles are localized in a region between a surface of the glass sheet 2 and a position spaced from the surface by 0.6 T toward a surface of the photocatalyst film 1 in a thickness direction of the photocatalyst film 1. The glass article has an increased transmittance provided by enhancing the reflection-reducing function of the photocatalyst film 1 while maintaining the film strength and photocatalytic function of the photocatalyst film 1.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: November 19, 2019
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Takeshi Yabuta, Fumiyoshi Kondo, Mitsuhiro Kawazu
  • Publication number: 20190315202
    Abstract: A windshield according to an aspect of the present invention is a windshield for an automobile on which an information acquisition device capable of acquiring information from the outside of a vehicle by emitting and/or receiving light can be arranged. The windshield includes; a glass plate including an information acquisition region that is opposite to the information acquisition device and through which the light passes; and an antifog laminate that includes a heat blocking layer and an antifog layer with antifog properties layered on one surface of the heat blocking layer, and that is layered on a surface on a vehicle interior side of the information acquisition region while the other surface of the heat blocking layer faces the surface on the vehicle interior side of the information acquisition region.
    Type: Application
    Filed: July 14, 2017
    Publication date: October 17, 2019
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Kazuaki OYA, Toyoyuki TERANISHI, Fumiyoshi KONDO, Mitsuhiro KAWAZU, Kazutaka KAMITANI, Yohei SHIMOKAWA
  • Publication number: 20190283549
    Abstract: A windshield according to an aspect of the present invention is a windshield for an automobile on which an information acquisition device capable of acquiring information from the outside of a vehicle by emitting and/or receiving light can be arranged. The windshield includes; a glass plate including an information acquisition region that is opposite to the information acquisition device and through which the light passes; an antifog film that includes a substrate layer and an antifog layer with antifog properties layered on one surface of the substrate layer, and that is attached to a surface on a vehicle interior side of the information acquisition region while the other surface of the substrate layer faces the surface on the vehicle interior side of the information acquisition region; and a protective film attached onto the antifog layer of the antifog film.
    Type: Application
    Filed: July 14, 2017
    Publication date: September 19, 2019
    Applicant: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Kazuaki OYA, Toyoyuki TERANISHI, Fumiyoshi KONDO, Mitsuhiro KAWAZU, Kazutaka KAMITANI, Yohei SHIMOKAWA
  • Patent number: 10416353
    Abstract: A low-reflection coating of the present invention is a porous film including: fine silica particles being solid and spherical and having an average particle diameter of 80 to 150 nm; and a binder containing silica as a main component, the fine silica particles being bound together by the binder. The binder further contains an aluminum compound. The low-reflection coating contains, as components, 55 to 70 mass % of the fine silica particles, 25 to 40 mass % of the silica of the binder, and 2 to 7 mass % of the aluminum compound in terms of Al2O3. The low-reflection coating has a thickness of 80 to 800 nm. The low-reflection coating yields a transmittance gain of 2.5% or more when provided on the substrate. The transmittance gain represents an increase in average transmittance of the substrate provided with the low-reflection coating relative to the substrate not provided with the low-reflection coating, the average transmittance being measured in the wavelength range of 380 to 850 nm.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: September 17, 2019
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Mizuho Koyo, Fumiyoshi Kondo, Yoko Miyamoto, Mitsuhiro Kawazu, Hirofumi Matsubara
  • Patent number: 10329430
    Abstract: A low-reflection coated glass sheet of the present invention includes a glass sheet and a low-reflection coating. The low-reflection coating is formed on at least a portion of one principal surface of the glass sheet, and contains a binder containing silica as a main component, fine silica particles bound by the binder, and fine titania particles bound by the binder. For the low-reflection coated glass sheet, a transmittance gain is 1.7% or more. The low-reflection coating contains 25 mass % to 43 mass % of the silica which is the main component of the binder, 40 mass % to 64 mass % of the fine silica particles, and 10 mass % to 20 mass % of the fine titania particles, based on the total mass of the low-reflection coating. As such, the low-reflection coated glass sheet of the present invention has high abrasion resistance and is capable of exhibiting photocatalytic properties and hydrophilicity when irradiated with light.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: June 25, 2019
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Mizuho Koyo, Mitsuhiro Kawazu
  • Publication number: 20190162877
    Abstract: A low-reflection coated glass sheet of the present invention includes a glass sheet and a low-reflection coating. The low-reflection coating is formed on at least a portion of one principal surface of the glass sheet and contains a binder containing silica as a main component, fine silica particles bound by the binder, and fine titania particles bound by the binder. The low-reflection coating satisfies the following relationships: 30 mass %<CSP<68 mass %; 12 mass %?CTP<50 mass %; 20 mass %<CBinder<43.75 mass %; CTP/CBinder?0.6; CBinder<25 mass % in the case of CSP?55 mass %; and CTP>20 mass % in the case of CSP<55 mass %. The low-reflection coated glass sheet has a transmittance gain of 2.0% or more.
    Type: Application
    Filed: July 7, 2017
    Publication date: May 30, 2019
    Inventors: Mizuho KOYO, Tatsuhiro NAKAZAWA, Mitsuhiro KAWAZU
  • Publication number: 20180022930
    Abstract: A low-reflection coated glass sheet of the present invention includes a glass sheet and a low-reflection coating. The low-reflection coating is formed on at least a portion of one principal surface of the glass sheet, and contains a binder containing silica as a main component, fine silica particles bound by the binder, and fine titania particles bound by the binder. For the low-reflection coated glass sheet, a transmittance gain is 1.7% or more. The low-reflection coating contains 25 mass % to 43 mass % of the silica which is the main component of the binder, 40 mass % to 64 mass % of the fine silica particles, and 10 mass % to 20 mass % of the fine titania particles, based on the total mass of the low-reflection coating. As such, the low-reflection coated glass sheet of the present invention has high abrasion resistance and is capable of exhibiting photocatalytic properties and hydrophilicity when irradiated with light.
    Type: Application
    Filed: January 28, 2016
    Publication date: January 25, 2018
    Inventors: Mizuho KOYO, Mitsuhiro KAWAZU
  • Publication number: 20170327416
    Abstract: A low-reflection coated glass sheet of the present invention includes a glass sheet and a low-reflection coating formed on at least a portion of a principal surface of the glass sheet. The low-reflection coating contains 60 mass % to 100 mass % of a silica material having a continuous structure. The low-reflection coated glass sheet of the present invention maintains a large transmittance gain even when scraping against foreign matters.
    Type: Application
    Filed: November 16, 2015
    Publication date: November 16, 2017
    Applicant: Nippon Sheet Glass Company, Limited
    Inventors: Yoko MIYAMOTO, Mizuho KOYO, Mitsuhiro KAWAZU
  • Publication number: 20170243989
    Abstract: The low-reflection coating of the present invention is adapted to be provided on at least one principal surface of a substrate. The low-reflection coating is a porous film having a thickness of 80 to 800 nm, the porous film including: fine silica particles being solid and spherical and having an average particle diameter of 80 to 600 nm; and a binder containing silica as a main component and containing a hydrophobic group, the fine silica particles being bound by the binder. The low-reflection coating contains 35 to 70 mass % of the fine silica particles, 25 to 64 mass % of the silica of the binder, and 0.2 to 10 mass % of the hydrophobic group of the binder. The low-reflection coating produces a transmittance gain of 1.5% or more when provided on the substrate.
    Type: Application
    Filed: September 25, 2015
    Publication date: August 24, 2017
    Inventors: Mizuho KOYO, Mitsuhiro KAWAZU
  • Patent number: 9664822
    Abstract: A cover glass of the present invention for photoelectric conversion devices includes a glass sheet having surface asperities and a reflection-reducing film formed over the surface asperities of the glass sheet. The surface asperities of the glass sheet have an average spacing Sm of 0.3 mm or more and 2.5 mm or less and an arithmetic average roughness Ra of 0.3 ?m to 5 ?m. The reflection-reducing film includes fine silica particles having an average particle diameter of 50 to 200 nm and a binder for the fine silica particles, and the fine silica particles are uniformly arranged in a single layer on peak portions of the surface asperities in such a manner that a filling fraction F is 35 to 65%. A transmittance gain is 2.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: May 30, 2017
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Fumiyoshi Kondo, Takeshi Yabuta, Mitsuhiro Kawazu
  • Publication number: 20170139080
    Abstract: A low-reflection coating of the present invention is a porous film including: fine silica particles being solid and spherical and having an average particle diameter of 80 to 150 nm; and a binder containing silica as a main component, the fine silica particles being bound together by the binder. The binder further contains an aluminum compound. The low-reflection coating contains, as components, 55 to 70 mass % of the fine silica particles, 25 to 40 mass % of the silica of the binder, and 2 to 7 mass % of the aluminum compound in terms of Al2O3. The low-reflection coating has a thickness of 80 to 800 nm. The low-reflection coating yields a transmittance gain of 2.5% or more when provided on the substrate. The transmittance gain represents an increase in average transmittance of the substrate provided with the low-reflection coating relative to the substrate not provided with the low-reflection coating, the average transmittance being measured in the wavelength range of 380 to 850 nm.
    Type: Application
    Filed: June 30, 2015
    Publication date: May 18, 2017
    Inventors: Mizuho KOYO, Fumiyoshi KONDO, Yoko MIYAMOTO, Mitsuhiro KAWAZU, Hirofumi MATSUBARA
  • Publication number: 20170021335
    Abstract: The present invention provides a glass article including a photocatalyst film 1 containing silicon oxide particles 6 and titanium oxide particles 5, and a glass sheet 2. Assuming that the photocatalyst film 1 has a film thickness T, 80% or more of the titanium oxide particles are localized in a region between a surface of the glass sheet 2 and a position spaced from the surface by 0.6 T toward a surface of the photocatalyst film 1 in a thickness direction of the photocatalyst film 1. The glass article has an increased transmittance provided by enhancing the reflection-reducing function of the photocatalyst film 1 while maintaining the film strength and photocatalytic function of the photocatalyst film 1.
    Type: Application
    Filed: October 10, 2016
    Publication date: January 26, 2017
    Inventors: Takeshi YABUTA, Fumiyoshi KONDO, Mitsuhiro KAWAZU
  • Patent number: 9486779
    Abstract: The present invention provides a glass article including a photocatalyst film 1 containing silicon oxide particles 6 and titanium oxide particles 5, and a glass sheet 2. Assuming that the photocatalyst film 1 has a film thickness T, 80% or more of the titanium oxide particles are localized in a region between a surface of the glass sheet 2 and a position spaced from the surface by 0.6 T toward a surface of the photocatalyst film 1 in a thickness direction of the photocatalyst film 1. The glass article has an increased transmittance provided by enhancing the reflection-reducing function of the photocatalyst film 1 while maintaining the film strength and photocatalytic function of the photocatalyst film 1.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: November 8, 2016
    Assignee: NIPPON SHEET GLASS COMPANY, LIMITED
    Inventors: Takeshi Yabuta, Fumiyoshi Kondo, Mitsuhiro Kawazu