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).

  • Publication number: 20030031958
    Abstract: A process for producing articles covered with a patterned film which can be formed by a short time of exposure and has high development sensitivity after exposure and excellent pattern accuracy and a photosensitive composition. The process comprises applying the photosensitive composition to a substrate, exposing the coating film to light in a pattern-form to polymerize exposed portions of the coating film, dissolving and removing unexposed portions. The composition comprises a metal alkoxide, a &bgr;-diketone and acrylic acid or methacrylic acid.
    Type: Application
    Filed: March 14, 2002
    Publication date: February 13, 2003
    Inventors: Noboru Tohge, Mitsuhiro Kawazu, Koichiro Nakamura, Hiroaki Yamamoto
  • Publication number: 20030025997
    Abstract: There is disclosed a manufacturing method of a large-area polarization element (10) whose film formed on a surface has an excellent adhesion. The method includes the steps of: forming an under film (12) on a glass substrate (11); coating the under film (12) with a metal dispersion; heating the metal dispersion; and forming a metal dispersed film (13) containing a fine metal particle (14). When the metal dispersion is heated, a noble metal ion in the metal dispersion is reduced to generate the fine metal particle (14). The fine metal particle (14) interacts with the under film (12), and is localized in the vicinity of an interface (16) of the under film (12) and metal dispersed film (13).
    Type: Application
    Filed: March 15, 2002
    Publication date: February 6, 2003
    Inventors: Mitsuhiro Kawazu, Hiroaki Yamamoto
  • Publication number: 20020186469
    Abstract: A method for manufacturing a polarization element which has a high reliability and is easy to manufacture. The manufacturing method includes the steps of forming a fine metal particle dispersed product including a plurality of dispersed fine metal particles on a surface of the transparent substrate using a sol-gel method, drawing the fine metal particle dispersed product together with the transparent substrate while heating both, and cutting the drawn fine metal particle dispersed product and transparent substrate. The forming step includes the steps of coating a sol coating liquid on the surface of the transparent substrate, heat-treating the coated sol coating liquid, and sintering the heat-treated sol coating liquid. The sol coating liquid includes a disperse liquid containing an organic silicon compound as a main component and a metal salt dispersed in the disperse liquid for forming the fine metal particles.
    Type: Application
    Filed: March 11, 2002
    Publication date: December 12, 2002
    Applicant: Nippon Sheet Glass Co., Ltd.
    Inventors: Mitsuhiro Kawazu, Hiroaki Yamamoto
  • Patent number: 6468934
    Abstract: An ultraviolet/infrared absorbent glass is formed of base glass, and colorants. The base glass includes 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O; 5 to 15 wt. % a total amount of MgO and CaO; 10 to 20 wt. % a total amount of Na2O and K2O; 0.05 to 0.3 wt. % SO3; and 0 to 5 wt. % B2O3. The colorants are formed of 0.35 to 0.55 wt. % the total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.08 to 0.15 wt. % FeO; 0.8 to 1.5 wt. % CeO2 and 0 to 1.5 wt. % TiO2. FeO expressed as Fe2O3 is equal to or more than 20 wt.% and less than 27 wt. % of T-Fe2O3. The glass has high visible light transmittance and light greensih color shade so that it is useful for a window of a vehicle and a building.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: October 22, 2002
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Yukihito Nagashima, Mitsuhiro Kawazu, Toshifumi Tsujino
  • Publication number: 20020025425
    Abstract: A method of producing a light absorbing pattern film coated article with a transmitted light spectrum distribution corresponding to the pattern of a photomask, wherein a light absorbing film coating solution, containing a silicon oxide raw material, a titanium oxide raw material, which contains titanium oxide microparticles, and a gold microparticle raw material, is coated onto the surface of a substrate, the photomask is positioned on top of said coated film, ultraviolet light is irradiated onto said coated film, and said coated film is thereafter heated.
    Type: Application
    Filed: June 22, 2001
    Publication date: February 28, 2002
    Inventor: Mitsuhiro Kawazu
  • Patent number: 6340646
    Abstract: A colored film-coated ultraviolet/infrared absorbent glass plate is formed of base glass, colorants, and a colored film. The base glass includes 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O; 5 to 15 wt. % total amount of MgO and CaO; 10 to 20 wt. % total amount of Na2O and K2O; 0.05 to 0.3 wt. % of SO3; and 0 to 5 wt. % B2O3. The colorants includes 0.35 to 0.55 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.08 to 0.15 wt. % FeO; 0.8 to 1.5 wt. % CeO2; and 0 to 0.5 wt. % TiO2. FeO expressed as Fe2O3 is equal to or more than 20 wt. % and less than 27 wt. % of T-Fe2O3. The colored film has a red color shade with a thickness between 30 nm and 300 nm and includes fine particles of gold and silicon oxide of more than 50 wt. % and equal to or less than 95 wt. %. The colored film is applied onto a surface of the ultraviolet/infrared absorbent glass plate.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: January 22, 2002
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Yukihito Nagashima, Mitsuhiro Kawazu, Toshifumi Tsujino
  • Publication number: 20010018393
    Abstract: The ultraviolet/infrared absorbent glass consisting of base glass including: 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; 0 to 10 wt. % MgO; 5 to 15 wt. % CaO; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O; 5 to 15 wt. % a total amount of MgO and CaO; 10 to 20 wt. % a total amount of Na2O and K2O; 0.05 to 0.3 wt. % SO3; and 0 to 5 wt. % B2O3, and colorants including: 0.35 to 0.55 wt. % the total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.08 to 0.15 wt. % FeO; 0.8 to 1.5 wt. % CeO2 and 0 to 1.5 wt. % TiO2, wherein FeO expressed as Fe2O3 is in a range of 20 to 27 wt. % (excluding 27 wt. %) of T-Fe2O3. The ultraviolet/infrared absorbent glass plate comprising the ultraviolet/infrared absorbent glass wherein the glass has the visible light transmittance of equal to or more than 75%, the solar energy transmittance of equal to or less than 60%, the ultraviolet transmittance of equal to or less than 15%, the dominant wavelength in a range of 495 to 535 nm and the excitation purity of equal to or less than 2.5%.
    Type: Application
    Filed: February 20, 2001
    Publication date: August 30, 2001
    Inventors: Yukihito Nagashima, Mitsuhiro Kawazu, Toshifumi Tsujino
  • Patent number: 6120850
    Abstract: By using a colored film forming composition, which contains at least an organic silicon compound and chloroauric acid and to which is added at least one type of compound exhibiting the maximum exothermic peak in the range of 170.degree. C. to 250.degree. C., in differential thermal analysis, the precipitation of gold micro-particles on the film surface can be prevented and gold micro-particle dispersion glass can be manufactured in a stable manner.The colored film forming composition of the present invention can thus be used for coating the surface of glass products, especially, windows, mirrors, etc. of automobiles and other vehicles and buildings.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: September 19, 2000
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Mitsuhiro Kawazu, Katuhiko Kinugawa, Taro Miyauchi, Koichi Maeda
  • Patent number: 5976678
    Abstract: Colored film-covered glass articles include a glass substrate and a colored film covering the glass substrate, the colored film containing, by wt %, greater than 50 to 95 of silicon oxide, 0.about.30 of at least one member selected from the group consisting of zirconium oxide, tantalum oxide and titanium oxide, 0.about.25 of cerium oxide, 5.about.20 of gold as coloring fine particles as main components. The glass articles have a visible light reflectance at a side of the glass substrate not covered with the colored film is 10.0% or below. The small visible light reflectance is caused by the surface plasmon absorption of the fine particles of gold.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: November 2, 1999
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Mitsuhiro Kawazu, Taro Miyauchi, Koichi Maeda
  • Patent number: 5942331
    Abstract: A sunligh absorbing colored film-coated glass article which can freely control color tint, infrared transmittance, UV light transmittance, and visible light transmittance. The colored film-coated glass article which comprises a glass substrate and a colored film formed on one surface thereof, the colored film comprising, in % by weight:5-30% at least one coloring fine particle selected from the group consisting of gold, silver, platinum, palladium, cadmium sulfide, and cadmium selenide;0-50% silicon oxide;0-70% titanium oxide;0-20% cerium oxide; and5-95% at least one coloring metal oxide selected from the group consisting of cobalt oxide, chromium oxide, copper oxide, manganese oxide, nickel oxide, and iron oxide, with the proviso that the total amount of silicon oxide, titanium oxide, and iron oxide is 10 to 95 wt %.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: August 24, 1999
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Taro Miyauchi, Mitsuhiro Kawazu, Koichi Maeda
  • Patent number: 5876854
    Abstract: UV absorbing, colored film-covered glass articles comprising covering, on a surface of a glass substrate, a UV absorbing, colored film which comprises, as main components expressed by wt %, 5.about.50 of silicon oxide, 5.about.70 of titanium oxide, 20.about.80 of cerium oxide, 5.about.30 of coloring fine particles of at least one member selected from the group consisting of gold, silver, platinum, palladium, cadmium sulfide and cadmium selenide, and 0.about.30 of at least one coloring metal oxide selected from the group consisting of cobalt oxide, chromium oxide, copper oxide, manganese oxide, nickel oxide and iron oxide.The UV absorbing, colored film-covered glass articles can be arbitrarily controlled with respect to the color tone, the UV transmittance, and the visible light transmittance.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: March 2, 1999
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Mitsuhiro Kawazu, Taro Miyauchi, Koichi Maeda, Tatsuya Noguchi