Patents by Inventor Yasuhiro Hosogi

Yasuhiro Hosogi 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: 9516881
    Abstract: The Cu- and Ti-containing composition of the present invention contains titanium oxide having a rutile-type titanium oxide content of 15 mol % or more, and at least one divalent copper compound represented by the following formula (1). The Cu- and Ti-containing composition production method of the present invention is characterized by including stirring a mixture containing titanium oxide having a rutile-type titanium oxide content of 15 mol % or more, a divalent copper compound raw material represented by formula (2), water, and an alkaline compound, to thereby cause precipitation. The composition of the present invention exhibits excellent anti-viral property under light and in the dark, and excellent organic compound decomposition activity under light.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 13, 2016
    Assignee: SHOWA DENKO K.K.
    Inventors: So Miyaishi, Yasushi Kuroda, Yasuhiro Hosogi, Ding Li
  • Patent number: 9248432
    Abstract: A copper compound-carried titanium oxide photocatalyst which is excellent in a photocatalytic activity and a viral inactivation property and a production process for the same can be provided by a copper compound-carried titanium oxide photocatalyst comprising titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more and a monovalent copper compound and a divalent copper compound which are carried on a surface of the titanium oxide described above and a production process for a copper compound-carried titanium oxide photocatalyst, comprising a step of carrying a monovalent copper compound and a divalent copper compound on a surface of titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: February 2, 2016
    Assignees: THE UNIVERSITY OF TOKYO, SHOW A DENKO K.K.
    Inventors: Kazuhito Hashimoto, Masahiro Miyauchi, Xiaoqing Qiu, Kayano Sunada, Yasushi Kuroda, Yasuhiro Hosogi, Ding Li, Yoshiki Shimodaira
  • Patent number: 9210939
    Abstract: The Cu- and Ti-containing composition of the present invention contains titanium oxide including rutile-crystal-type titanium oxide, and a divalent copper compound, wherein the rutile-crystal-type titanium oxide exhibits the most intense diffraction peak attributed to rutile-type titanium oxide having a full width at half maximum of 0.65° or less, in a Cu—K? line X-ray diffraction pattern, which is obtained by plotting intensity of diffraction line with respect to diffraction angle 2?. The composition exhibits excellent anti-viral property under light and in the dark, and excellent organic compound degradability under light.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 15, 2015
    Assignee: SHOWA DENKO K.K.
    Inventors: So Miyaishi, Yasushi Kuroda, Yasuhiro Hosogi, Ding Li
  • Patent number: 9061272
    Abstract: The present invention relates to a copper ion-modified tungsten oxide photocatalyst subjected to chemical etching treatment with a basic aqueous solution in which a rate of change in diffuse reflectance of the photocatalyst as measured at a wavelength of 700 nm between before and after irradiated with an ultraviolet light in atmospheric air is less than 10%; and a process for producing a copper ion-modified tungsten oxide photocatalyst which includes a copper ion modifying step of modifying a tungsten oxide powder with a copper ion; a chemical etching step of subjecting the tungsten oxide powder to chemical etching treatment with a basic aqueous solution, the chemical etching treatment being carried out either before or after the copper ion modifying step; and a drying step of drying the product obtained after the above steps at a temperature of 200° C. or lower.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: June 23, 2015
    Assignee: SHOWA DENKO K.K.
    Inventor: Yasuhiro Hosogi
  • Publication number: 20140322353
    Abstract: The Cu- and Ti-containing composition of the present invention contains titanium oxide having a rutile-type titanium oxide content of 15 mol % or more, and at least one divalent copper compound represented by the following formula (1). The Cu- and Ti-containing composition production method of the present invention is characterized by including stirring a mixture containing titanium oxide having a rutile-type titanium oxide content of 15 mol % or more, a divalent copper compound raw material represented by formula (2), water, and an alkaline compound, to thereby cause precipitation. The composition of the present invention exhibits excellent anti-viral property under light and in the dark, and excellent organic compound decomposition activity under light.
    Type: Application
    Filed: December 17, 2012
    Publication date: October 30, 2014
    Applicant: SHOWA DENKO K.K.
    Inventors: So Miyaishi, Yasushi Kuroda, Yasuhiro Hosogi, Ding Li
  • Publication number: 20140294989
    Abstract: The Cu- and Ti-containing composition of the present invention contains titanium oxide including rutile-crystal-type titanium oxide, and a divalent copper compound, wherein the rutile-crystal-type titanium oxide exhibits the most intense diffraction peak attributed to rutile-type titanium oxide having a full width at half maximum of 0.65° or less, in a Cu—K? line X-ray diffraction pattern, which is obtained by plotting intensity of diffraction line with respect to diffraction angle 2?. The composition exhibits excellent anti-viral property under light and in the dark, and excellent organic compound degradability under light.
    Type: Application
    Filed: December 17, 2012
    Publication date: October 2, 2014
    Applicant: SHOWA DENKO K.K.
    Inventors: So Miyaishi, Yasushi Kuroka, Yasuhiro Hosogi, Ding Li
  • Patent number: 8728973
    Abstract: The present invention relates to a photocatalytic material having a visible light activity which includes a tungsten-doped titanium oxide or a tungsten/gallium-codoped titanium oxide, and a divalent copper salt and/or a trivalent iron salt supported on a surface of the doped or codoped titanium oxide, and a process for producing the photocatalytic material.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: May 20, 2014
    Assignees: The University of Tokyo, Showa Denko K.K.
    Inventors: Kazuhito Hashimoto, Hiroshi Irie, Huogen Yu, Yasushi Kuroda, Yasuhiro Hosogi
  • Patent number: 8652991
    Abstract: The present invention relates to a method for producing a tungsten oxide photocatalyst having titanium oxide and copper ion supported thereon, comprising dissolving urea in a solution in which copper-ion supporting tungsten oxide particles are uniformly dispersed in a titanium oxide sol, thermally decomposing the urea to thereby allow the titanium oxide to precipitate on the surface of copper ion-supporting tungsten oxide and to be supported thereon; and a tungsten oxide photocatalyst modified by both titanium oxide and copper ion obtained by the method, wherein the rate of change of diffuse reflectivity (at wavelength of 700 nm) is less than 3% before and after the irradiation of ultraviolet and the titanium oxide is supported on the tungsten oxide in an island shape of 1 to 100 nm in size. The tungsten oxide photocatalyst having titanium oxide and copper ion supported thereon of the present invention exhibits high catalyst activity under visible light irradiation.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: February 18, 2014
    Assignee: Showa Denko K.K.
    Inventors: Yasuhiro Hosogi, Yasushi Kuroda
  • Publication number: 20130281283
    Abstract: A copper compound-carried titanium oxide photocatalyst which is excellent in a photocatalytic activity and a viral inactivation property and a production process for the same can be provided by a copper compound-carried titanium oxide photocatalyst comprising titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more and a monovalent copper compound and a divalent copper compound which are carried on a surface of the titanium oxide described above and a production process for a copper compound-carried titanium oxide photocatalyst, comprising a step of carrying a monovalent copper compound and a divalent copper compound on a surface of titanium oxide in which a content of rutile type titanium oxide is 50% by mole or more.
    Type: Application
    Filed: June 22, 2012
    Publication date: October 24, 2013
    Applicants: THE UNIVERSTIY OF TOKYO, SHOWA DENKO K.K.
    Inventors: Kazuhito Hashimoto, Masahiro Miyauchi, Xiaoqing Qiu, Kayano Sunada, Yasushi Kuroda, Yasuhiro Hosogi, Ding Li, Yoshiki Shimodaira
  • Publication number: 20130178361
    Abstract: The present invention relates to a process for producing a dispersion of a copper ion-modified tungsten oxide photocatalyst, including the steps of subjecting copper ion-modified tungsten oxide particles to mechanical pulverization treatment in a solvent and then contacting the resulting dispersion of the pulverized particles with an oxygen gas or ozone; and a copper ion-modified tungsten oxide photocatalyst which is produced by subjecting copper ion-modified tungsten oxide particles to mechanical pulverization treatment in a solvent and then contacting the resulting dispersion of the pulverized particles with an oxidative gas, wherein a photocatalyst powder obtained by drying the dispersion after being contacted with the oxidative gas exhibits a diffuse reflectance of 75% or more as measured at a wavelength of 700 nm.
    Type: Application
    Filed: July 8, 2011
    Publication date: July 11, 2013
    Applicant: SHOWA DENKO K.K.
    Inventor: Yasuhiro Hosogi
  • Publication number: 20130095998
    Abstract: The present invention relates to a method for producing a tungsten oxide photocatalyst having titanium oxide and copper ion supported thereon, comprising dissolving urea in a solution in which copper-ion supporting tungsten oxide particles are uniformly dispersed in a titanium oxide sol, thermally decomposing the urea to thereby allow the titanium oxide to precipitate on the surface of copper ion-supporting tungsten oxide and to be supported thereon; and a tungsten oxide photocatalyst modified by both titanium oxide and copper ion obtained by the method, wherein the rate of change of diffuse reflectivity (at wavelength of 700 nm) is less than 3% before and after the irradiation of ultraviolet and the titanium oxide is supported on the tungsten oxide in an island shape of 1 to 100 nm in size. The tungsten oxide photocatalyst having titanium oxide and copper ion supported thereon of the present invention exhibits high catalyst activity under visible light irradiation.
    Type: Application
    Filed: May 23, 2012
    Publication date: April 18, 2013
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasuhiro Hosogi, Yasushi Kuroda
  • Publication number: 20130053238
    Abstract: The present invention relates to a copper ion-modified tungsten oxide photocatalyst subjected to chemical etching treatment with a basic aqueous solution in which a rate of change in diffuse reflectance of the photocatalyst as measured at a wavelength of 700 nm between before and after irradiated with an ultraviolet light in atmospheric air is less than 10%; and a process for producing a copper ion-modified tungsten oxide photocatalyst which includes a copper ion modifying step of modifying a tungsten oxide powder with a copper ion; a chemical etching step of subjecting the tungsten oxide powder to chemical etching treatment with a basic aqueous solution, the chemical etching treatment being carried out either before or after the copper ion modifying step; and a drying step of drying the product obtained after the above steps at a temperature of 200° C. or lower.
    Type: Application
    Filed: February 15, 2011
    Publication date: February 28, 2013
    Applicant: SHOWA DENKO K.K.
    Inventor: Yasuhiro Hosogi
  • Publication number: 20120201714
    Abstract: To provide a method for inactivating a virus which is in contact with a photocatalyst material, the method including irradiating the photocatalyst material with light from a light source, and an article provided with an anti-viral property, the article containing a visible-light-responsive photocatalyst material deposited on the surface thereof.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 9, 2012
    Applicant: The University of Tokyo
    Inventors: Kazuhito Hashimoto, Kayano Sunada, Yoshinobu Kubota, Hitoshi Ishiguro, Ryuichi Nakano, Jitsuo Kajioka, Yanyan Yao, Yasushi Kuroda, Yasuhiro Hosogi
  • Publication number: 20120135861
    Abstract: The present invention relates to a photocatalytic material having a visible light activity which includes a tungsten-doped titanium oxide or a tungsten/gallium-codoped titanium oxide, and a divalent copper salt and/or a trivalent iron salt supported on a surface of the doped or codoped titanium oxide, and a process for producing the photocatalytic material.
    Type: Application
    Filed: July 29, 2010
    Publication date: May 31, 2012
    Applicants: SHOWA DENKO K.K., THE UNIVERSITY OF TOKYO
    Inventors: Kazuhito Hashimoto, Hiroshi Irie, Huogen Yu, Yasushi Kuroda, Yasuhiro Hosogi
  • Patent number: 5338380
    Abstract: High strength low carbon steel wire rods excellent in the cold drawing property have a composite structure in which an acicular low temperature transformation phase comprising a martensite, bainite and/or the mixed structure thereof that comprises, by weight %,C: 0.02-0.30%,Si: less than 2-5%,Mn: less than 2.5% andthe balance of iron and inevitable impurities and that may partially contain retained austenite is uniformly dispersed at the volume ratio of from 10 to 70% in the ferrite phase, and in which the weight of (C+N) in solution the ferrite phase is less than 40 ppm.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: August 16, 1994
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiaki Yutori, Masaaki Katsumata, Takehiko Kato, Yasuhiro Hosogi
  • Patent number: 5141570
    Abstract: High strength low carbon steel wire rods excellent in the cold drawing property have a composite structure in which an acicular low temperature transformation phase comprising a martensite, bainite and/or the mixed structure thereof that comprises, by weight %,C: 0.02-0.30%,Si: less than 2.5%,Mn: less than 2.5% andthe balance of iron and inevitable impurities and that may partially contain retained austenite is uniformly dispersed at the volume ratio of from 10 to 70% in the ferrite phase, and in which the weight of (C+N) in solution in the ferrite phase is less than 40 ppm.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: August 25, 1992
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiaki Yutori, Takehiko Kato, Yasuhiro Hosogi
  • Patent number: 4578124
    Abstract: High strength low carbon steels having good ultraworkability which comprises 0.01-0.3 wt % of C, below 1.5 wt % of Si, 0.3-2.5 wt % of Mn and the balance of iron and inevitable impurities. In the steel, a low temperature transformation product phase consisting of acicular martensite, bainite or a mixed structure thereof is uniformly dispersed in a ferrite phase in an amount by volume of 15-40%. Wire articles of these steels and methods for making the steels are also disclosed.
    Type: Grant
    Filed: December 27, 1984
    Date of Patent: March 25, 1986
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Toshiaki Yutori, Masatoshi Sudo, Takehiko Kato, Yasuhiro Hosogi