Patents by Inventor Kazutaka Kamitani
Kazutaka Kamitani 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).
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Publication number: 20240018035Abstract: The glass body according to the present invention includes a plate-like glass plate having a first surface and a second surface; and an antibacterial film that is formed on the first surface and in which copper ions are dispersed.Type: ApplicationFiled: November 1, 2021Publication date: January 18, 2024Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kazutaka KAMITANI, Yuki SHIMAMURA, Teruyuki SASAKI, Mizuho KOYO
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Publication number: 20230126941Abstract: Provided is an antiglare film-attached transparent substrate that is suitably disposed on an image display side of an image display apparatus. An antiglare film-attached transparent substrate 100 includes: a transparent substrate 10; and an antiglare film 20 disposed on the transparent substrate 10. The antiglare film 20 contains particles and a matrix 2. The particles are, for example, flat-plate-shaped particles 1 in which a thickness is in a range of 0.3 nm to 3 nm and an average diameter of principal surfaces of the particles is in a range of 10 nm to 1000 nm. The matrix 2 contains silicon oxide. The principal surfaces of the flat-plate-shaped particles 1 may be disposed substantially parallel to a principal surface of the transparent substrate 10 in the antiglare film 20.Type: ApplicationFiled: March 15, 2021Publication date: April 27, 2023Inventors: Nobuki IWAI, Kazutaka KAMITANI
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Patent number: 11214129Abstract: 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: GrantFiled: July 14, 2017Date of Patent: January 4, 2022Assignee: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kazuaki Oya, Toyoyuki Teranishi, Fumiyoshi Kondo, Mitsuhiro Kawazu, Kazutaka Kamitani, Yohei Shimokawa
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Publication number: 20200223188Abstract: 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: ApplicationFiled: July 14, 2017Publication date: July 16, 2020Applicant: Nippon Sheet Glass Company, LimitedInventors: Kazuaki OYA, Toyoyuki TERANISHI, Fumiyoshi KONDO, Mitsuhiro KAWAZU, Kazutaka KAMITANI, Yohei SHIMOKAWA
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Publication number: 20200079185Abstract: 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: ApplicationFiled: December 8, 2017Publication date: March 12, 2020Inventors: Fumiyoshi KONDO, Kazuaki OYA, Kazutaka KAMITANI, Yohei SHIMOKAWA, Mitsuhiro KAWAZU, Toyoyuki TERANISHI
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Publication number: 20190315202Abstract: 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: ApplicationFiled: July 14, 2017Publication date: October 17, 2019Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kazuaki OYA, Toyoyuki TERANISHI, Fumiyoshi KONDO, Mitsuhiro KAWAZU, Kazutaka KAMITANI, Yohei SHIMOKAWA
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Publication number: 20190283549Abstract: 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: ApplicationFiled: July 14, 2017Publication date: September 19, 2019Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kazuaki OYA, Toyoyuki TERANISHI, Fumiyoshi KONDO, Mitsuhiro KAWAZU, Kazutaka KAMITANI, Yohei SHIMOKAWA
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Patent number: 10400130Abstract: Provided is an anti-fogging coated transparent article including an anti-fog film, the anti-fog film being a single-layer film containing a water-absorbent resin, a hydrophobic group, and a metal oxide component. The hydrophobic group is a chain or cyclic alkyl group having 1 to 30 carbon atoms, preferably a linear alkyl group having 6 to 14 carbon atoms, in which at least one hydrogen atom is optionally substituted by a fluorine atom. The hydrophobic group is bonded directly to a metal atom of the metal oxide component. The anti-fog film contains, for example, the metal oxide component in an amount of 0.01 to 60 parts by mass and the hydrophobic group in an amount of 0.05 to 10 parts by mass per 100 parts by mass of the water-absorbent resin. The water-absorbent resin is, for example, polyvinyl acetal.Type: GrantFiled: May 30, 2018Date of Patent: September 3, 2019Assignee: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kazuaki Oya, Kazutaka Kamitani
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Patent number: 10106458Abstract: Provided is a method for producing a vehicle window glass, the method being adapted to prevent peeling-off of a functional thin film from a ceramic shielding layer without masking the ceramic shielding layer with a masking tape. This production method includes: an application step of feeding a coating liquid for forming the functional thin film onto a principal surface of a glass sheet on which the ceramic shielding layer has been formed beforehand, so as to allow the coating liquid to flow in a predetermined direction on the principal surface; and a drying step of drying the fed coating liquid. In the application step, the glass sheet is set in such a position that the predetermined direction coincides with a first direction in which the maximum length of the principal surface is 30 cm or less (rather than with a second direction in which the maximum length is more than 50 cm) and thus that the distance the coating liquid flows on the principal surface is limited to 30 cm or less.Type: GrantFiled: January 16, 2015Date of Patent: October 23, 2018Assignee: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kazutaka Kamitani, Teruyuki Sasaki, Shinya Okamoto, Takeshi Fujiwara, Yasumitsu Shirasuna, Yuki Watanabe
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Publication number: 20180273791Abstract: Provided is an anti-fogging coated transparent article including an anti-fog film, the anti-fog film being a single-layer film containing a water-absorbent resin, a hydrophobic group, and a metal oxide component. The hydrophobic group is a chain or cyclic alkyl group having 1 to 30 carbon atoms, preferably a linear alkyl group having 6 to 14 carbon atoms, in which at least one hydrogen atom is optionally substituted by a fluorine atom. The hydrophobic group is bonded directly to a metal atom of the metal oxide component. The anti-fog film contains, for example, the metal oxide component in an amount of 0.01 to 60 parts by mass and the hydrophobic group in an amount of 0.05 to 10 parts by mass per 100 parts by mass of the water-absorbent resin. The water-absorbent resin is, for example, polyvinyl acetal.Type: ApplicationFiled: May 30, 2018Publication date: September 27, 2018Inventors: Kazuaki OYA, Kazutaka KAMITANI
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Patent number: 10011733Abstract: Provided is an anti-fogging coated transparent article including an anti-fog film, the anti-fog film being a single-layer film containing a water-absorbent resin, a hydrophobic group, and a metal oxide component. The hydrophobic group is a chain or cyclic alkyl group having 1 to 30 carbon atoms, preferably a linear alkyl group having 6 to 14 carbon atoms, in which at least one hydrogen atom is optionally substituted by a fluorine atom. The hydrophobic group is bonded directly to a metal atom of the metal oxide component. The anti-fog film contains, for example, the metal oxide component in an amount of 0.01 to 60 parts by mass and the hydrophobic group in an amount of 0.05 to 10 parts by mass per 100 parts by mass of the water-absorbent resin. The water-absorbent resin is, for example, polyvinyl acetal.Type: GrantFiled: June 3, 2015Date of Patent: July 3, 2018Assignee: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Kazuaki Oya, Kazutaka Kamitani
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Patent number: 9802859Abstract: Provided is a method for forming a coating containing an organic acid in a glass sheet production line while controlling an increase in the haze ratio of the glass. The method of the present invention is a method for producing a coated glass sheet, the method including the steps of cutting a glass ribbon to form a plurality of glass sheets in a glass sheet production line; and applying a solution onto the glass ribbon or the plurality of glass sheets in the glass sheet production line, the solution containing an organic acid and at least one selected from a water-soluble polymer and a polyphosphoric acid salt. The water-soluble polymer is preferably a water-soluble high-molecular-weight polymer, and more preferably a water-soluble copolymer. A preferred water-soluble copolymer contains a vinylpyrrolidone unit.Type: GrantFiled: March 12, 2013Date of Patent: October 31, 2017Assignee: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Masahiro Hori, Shinya Okamoto, Yasuhiro Saito, Kazutaka Kamitani, Paul Arthur Holmes
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Publication number: 20170096574Abstract: Provided is an anti-fogging coated transparent article including an anti-fog film, the anti-fog film being a single-layer film containing a water-absorbent resin, a hydrophobic group, and a metal oxide component. The hydrophobic group is a chain or cyclic alkyl group having 1 to 30 carbon atoms, preferably a linear alkyl group having 6 to 14 carbon atoms, in which at least one hydrogen atom is optionally substituted by a fluorine atom. The hydrophobic group is bonded directly to a metal atom of the metal oxide component. The anti-fog film contains, for example, the metal oxide component in an amount of 0.01 to 60 parts by mass and the hydrophobic group in an amount of 0.05 to 10 parts by mass per 100 parts by mass of the water-absorbent resin. The water-absorbent resin is, for example, polyvinyl acetal.Type: ApplicationFiled: June 3, 2015Publication date: April 6, 2017Inventors: Kazuaki OYA, Kazutaka KAMITANI
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Publication number: 20160326049Abstract: Provided is a method for producing a vehicle window glass, the method being adapted to prevent peeling-off of a functional thin film from a ceramic shielding layer without masking the ceramic shielding layer with a masking tape. This production method includes: an application step of feeding a coating liquid for forming the functional thin film onto a principal surface of a glass sheet on which the ceramic shielding layer has been formed beforehand, so as to allow the coating liquid to flow in a predetermined direction on the principal surface; and a drying step of drying the fed coating liquid. In the application step, the glass sheet is set in such a position that the predetermined direction coincides with a first direction in which the maximum length of the principal surface is 30 cm or less (rather than with a second direction in which the maximum length is more than 50 cm) and thus that the distance the coating liquid flows on the principal surface is limited to 30 cm or less.Type: ApplicationFiled: January 16, 2015Publication date: November 10, 2016Inventors: Kazutaka KAMITANI, Teruyuki SASAKI, Shinya OKAMOTO, Takeshi FUJIWARA, Yasumitsu SHIRASUNA, Yuki WATANABE
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Publication number: 20150072157Abstract: Provided is a method for forming a coating containing an organic acid in a glass sheet production line while controlling an increase in the haze ratio of the glass. The method of the present invention is a method for producing a coated glass sheet, the method including the steps of cutting a glass ribbon to form a plurality of glass sheets in a glass sheet production line; and applying a solution onto the glass ribbon or the plurality of glass sheets in the glass sheet production line, the solution containing an organic acid and at least one selected from a water-soluble polymer and a polyphosphoric acid salt. The water-soluble polymer is preferably a water-soluble high-molecular-weight polymer, and more preferably a water-soluble copolymer. A preferred water-soluble copolymer contains a vinylpyrrolidone unit.Type: ApplicationFiled: March 12, 2013Publication date: March 12, 2015Inventors: Masahiro Hori, Shinya Okamoto, Yasuhiro Saito, Kazutaka Kamitani, Paul Arthur Holmes
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Publication number: 20130302599Abstract: The present invention provides an antifog-film-coated article including an antifog film having high hardness while maintaining sufficient antifog performance, which article can be employed in various applications, including antifog mirrors, windowpanes for automobiles, and windowpanes for buildings. The antifog-film-coated article of the present invention includes a hard substrate, and a water-absorbing composite film formed on the substrate, wherein the water-absorbing composite film contains a polyvinyl acetal resin; colloidal silica in an amount of 30 to 80 parts by mass on the basis of 100 parts by mass of the resin; and silica-equivalent particles derived from a hydrolysis product or partial hydrolysis product of a silicon alkoxide compound in an amount of 5 to 55 parts by mass on the basis of 100 parts by mass of the resin.Type: ApplicationFiled: November 14, 2011Publication date: November 14, 2013Applicant: NIPPON SHEET GLASS CO., LTD.Inventors: Kazuaki Oya, Kazutaka Kamitani, Toyoyuki Teranishi, Shuhei Murata
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Patent number: 8541106Abstract: Provided is a glass article that improves the film strength of a photocatalyst film while maintaining the photocatalytic function and the reflection suppressing function of the photocatalyst film. The photocatalyst film on the glass sheet is formed to contain, in mass %, 50 to 82% of silicon oxide particles, 8 to 40% of titanium oxide particles, and 7 to 20% of a binder component composed of silicon oxide. The average particle diameter of the silicon oxide particles is set to at least 5 times the average particle diameter of the titanium oxide particles. The photocatalyst film is formed to have a structure such that some of the silicon oxide particles in the film serve as protruding silicon oxide particles that are not in contact with the glass sheet and that have their top portions protruding from the surrounding titanium oxide particles and being exposed on the surface of the film, while some of the titanium oxide particles are interposed between the glass sheet and the protruding silicon oxide particles.Type: GrantFiled: August 17, 2010Date of Patent: September 24, 2013Assignee: Nippon Sheet Glass Company, LimitedInventors: Takeshi Yabuta, Fumiyoshi Kondo, Masaatsu Kido, Masahiro Hori, Mitsuhiro Kawazu, Kazutaka Kamitani
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Publication number: 20120148832Abstract: Provided is a glass article that improves the film strength of a photocatalyst film while maintaining the photocatalytic function and the reflection suppressing function of the photocatalyst film. The photocatalyst film on the glass sheet is formed to contain, in mass %, 50 to 82% of silicon oxide particles, 8 to 40% of titanium oxide particles, and 7 to 20% of a binder component composed of silicon oxide. The average particle diameter of the silicon oxide particles is set to at least 5 times the average particle diameter of the titanium oxide particles. The photocatalyst film is formed to have a structure such that some of the silicon oxide particles in the film serve as protruding silicon oxide particles that are not in contact with the glass sheet and that have their top portions protruding from the surrounding titanium oxide particles and being exposed on the surface of the film, while some of the titanium oxide particles are interposed between the glass sheet and the protruding silicon oxide particles.Type: ApplicationFiled: August 17, 2010Publication date: June 14, 2012Applicant: NIPPON SHEET GLASS COMPANY, LIMITEDInventors: Takeshi Yabuta, Fumiyoshi Kondo, Masaatsu Kido, Masahiro Hori, Mitsuhiro Kawazu, Kazutaka Kamitani
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Patent number: 8039111Abstract: An article with a silica-based film that contains an organic material and has excellent mechanical strength. This article includes a substrate and an organic-inorganic composite film that is formed on the surface of the substrate. The organic-inorganic composite film contains silica as its main component. A value of (0.19A+0.03) or lower (A denotes the film thickness [?m]) is obtained through X-ray diffraction analysis on the organic-inorganic composite film, with the X-ray incident angle being fixed at 1° with respect to the surface of the organic-inorganic composite film, when the intensity of a peak at a diffraction angle of 3° to 10° is standardized using the intensity of a halo pattern peak at a diffraction angle of 20° to 30°. A value of 0.Type: GrantFiled: October 5, 2006Date of Patent: October 18, 2011Assignee: Nippon Sheet Glass Company, LimitedInventors: Teruyuki Sasaki, Kazutaka Kamitani, Kazuyuki Inoguchi
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Patent number: 8021749Abstract: The present invention allows abrasion resistance in silica-based films containing an organic material to be improved. Such a silica-based film contains silica as an inorganic oxide to be its main component, and a poorly water-soluble polymer as an organic material. Example of the poorly water-soluble polymer include a polymer having a solubility of 1.0 g or less with respect to 100 g of water at 25° C., such as polycaprolactone polyol, bisphenol A polyol and glycerol polyol. The silica-based film exhibits good abrasion resistance not only in the Taber abrasion test, but also in the steel wool abrasion test.Type: GrantFiled: December 17, 2007Date of Patent: September 20, 2011Assignee: Nippon Sheet Glass Company, LimitedInventors: Teruyuki Sasaki, Kazutaka Kamitani