Patents by Inventor Keita Nagano

Keita Nagano 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: 20220177708
    Abstract: A black aluminum pigment comprises a flaky aluminum particle; and a coating film that covers the aluminum particle, the coating film comprises a titanium oxide layer and an amorphous silicon compound layer, the titanium oxide layer has a composition that satisfies TiOx (0.50?x?1.90), and the amorphous silicon compound layer is composed of at least one of silicon oxide, silicon hydroxide, and silicon hydrate.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 9, 2022
    Applicants: TOYO ALUMINIUM KABUSHIKI KAISHA, AKO KASEI CO., LTD.
    Inventors: Katsura KAWASHIMA, Keita NAGANO, Shunichi SETOGUCHI, Yoshinobu UOZUMI, Tomomi NAKAHARA
  • Patent number: 10786781
    Abstract: A carbon dioxide separation and capture apparatus includes an absorption tower configured to cause an absorbing liquid to absorb a carbon dioxide gas contained in a process gas and a regeneration tower configured to cause the absorbing liquid from the absorption tower to release the carbon dioxide gas. The carbon dioxide separation and capture apparatus further includes an inlet concentration meter configured to measure concentration of an acid component in the process gas supplied to the absorption tower and an outlet concentration meter configured to measure concentration of the acid component in the process gas discharged from the absorption tower.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 29, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keita Nagano, Mitsuru Udatsu, Masatoshi Hodotsuka
  • Patent number: 10351723
    Abstract: The present invention is a method for producing an aluminum flake paste including a first step of flaking a raw material aluminum powder in an organic solvent containing an aromatic hydrocarbon as a main ingredient to give aluminum flakes, and a second step of treating the aluminum flakes obtained in the first step with an organic compound having a polar group, and forming the treated flakes into a paste.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: July 16, 2019
    Assignee: TOYO ALUMINUM KABUSHIKI KAISHA
    Inventors: Shuichi Kuroi, Keita Nagano, Akihiko Ikeya, Masahito Yoshida
  • Patent number: 9950296
    Abstract: In a carbon dioxide separation and capture apparatus according to an embodiment, a control device calculates a flow rate range of a carbon dioxide gas based on the concentration of the carbon dioxide gas and an output range of a blower. The control device determines a flow rate of the carbon dioxide gas in which the sum of energy is the least based on relationships, corresponding to a preset target amount of carbon dioxide gas to be captured, between a flow rate of the carbon dioxide gas, and sum of energy obtained by summing the amount of heat to be supplied by a heating medium from the external, power of the blower and power of a pump. The control device controls output of the blower, an opening degree of the first flow rate control valve, and an opening degree of the second flow rate control valve.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: April 24, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keita Nagano, Satoshi Saito, Masatoshi Hodotsuka, Mitsuru Udatsu
  • Patent number: 9737848
    Abstract: A carbon dioxide capture system includes: a washing unit which uses cleaning water to clean absorption unit exhaust gas or stripping unit exhaust gas; and a gas-liquid separation device which allows condensed water generated by cooling washing unit exhaust gas to be separated from the washing unit exhaust gas. The condensed water is mixed into the cleaning water by a condensed water line. If the amount of the cleaning water becomes more than a predetermined amount, the cleaning water is mixed into an absorbing liquid by a cleaning water line. A controller controls a condensed water valve.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: August 22, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuru Udatsu, Masatoshi Hodotsuka, Hideo Kitamura, Kiyohiko Iwasa, Keita Nagano, Noriko Chiba, Yusuke Handa, Satoshi Saito
  • Publication number: 20170173522
    Abstract: A carbon dioxide separation and capture apparatus includes an absorption tower configured to cause an absorbing liquid to absorb a carbon dioxide gas contained in a process gas and a regeneration tower configured to cause the absorbing liquid from the absorption tower to release the carbon dioxide gas. The carbon dioxide separation and capture apparatus further includes an inlet concentration meter configured to measure concentration of an acid component in the process gas supplied to the absorption tower and an outlet concentration meter configured to measure concentration of the acid component in the process gas discharged from the absorption tower.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 22, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Keita NAGANO, Mitsuru UDATSU, Masatoshi HODOTSUKA
  • Publication number: 20160346725
    Abstract: A carbon dioxide capture system includes: a washing unit which uses cleaning water to clean absorption unit exhaust gas or stripping unit exhaust gas; and a gas-liquid separation device which allows condensed water generated by cooling washing unit exhaust gas to be separated from the washing unit exhaust gas. The condensed water is mixed into the cleaning water by a condensed water line. If the amount of the cleaning water becomes more than a predetermined amount, the cleaning water is mixed into an absorbing liquid by a cleaning water line. A controller controls a condensed water valve.
    Type: Application
    Filed: December 16, 2015
    Publication date: December 1, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuru UDATSU, Masatoshi Hodotsuka, Hideo Kitamura, Kiyohiko Iwasa, Keita Nagano, Noriko Chiba, Yusuke Handa, Satoshi Saito
  • Publication number: 20160082386
    Abstract: In a carbon dioxide separation and capture apparatus according to an embodiment, a control device calculates a flow rate range of a carbon dioxide gas based on the concentration of the carbon dioxide gas and an output range of a blower. The control device determines a flow rate of the carbon dioxide gas in which the sum of energy is the least based on relationships, corresponding to a preset target amount of carbon dioxide gas to be captured, between a flow rate of the carbon dioxide gas, and sum of energy obtained by summing the amount of heat to be supplied by a heating medium from the external, power of the blower and power of a pump. The control device controls output of the blower, an opening degree of the first flow rate control valve, and an opening degree of the second flow rate control valve.
    Type: Application
    Filed: June 8, 2015
    Publication date: March 24, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Keita NAGANO, Satoshi SAITO, Masatoshi HODOTSUKA, Mitsuru UDATSU
  • Publication number: 20150353754
    Abstract: The present invention is a method for producing an aluminum flake paste including a first step of flaking a raw material aluminum powder in an organic solvent containing an aromatic hydrocarbon as a main ingredient to give aluminum flakes, and a second step of treating the aluminum flakes obtained in the first step with an organic compound having a polar group, and forming the treated flakes into a paste.
    Type: Application
    Filed: December 26, 2013
    Publication date: December 10, 2015
    Applicant: TOYO ALUMINIUM KABUSHIKI KAISHA
    Inventors: Shuichi KUROI, Keita NAGANO, Akihiko IKEYA, Masahito YOSHIDA
  • Patent number: 8999054
    Abstract: In order to provide a method of manufacturing an aluminum flake pigment having a small mean particle size as well as high brightness, a method of manufacturing an aluminum flake pigment including a step of flaking aluminum powder in an organic solvent with a grinder having grinding media, which grinding media contain steel ball grinding media formed by spherical media consisting of a material including steel and having diameters in the range of 0.3 mm to 1.0 mm, is provided. The mean particle size (D50Al) of this aluminum powder is preferably in the range of 1.0 to 10.0 ?m. Further, this grinder is preferably a ball mill.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: April 7, 2015
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventors: Keita Nagano, Takao Mizoshita
  • Patent number: 7553887
    Abstract: To provide a resin composition comprising a polypropylene resin composition and an aluminum flake pigment for use as an automotive resin composition, which is excellent in mechanical strength, physical properties and flowability, and enables to produce molded products showing good metallic appearance. A composition comprising a crystalline propylene/ethylene block copolymer, an elastomeric polymer and an inorganic filler is a preferred example of the polypropylene resin composition, and aluminum flakes surface-coated with a polymer containing as constituent units acrylic acid, an acrylic acid ester, epoxylated polybutadiene and divinylbenzene are preferred examples of the aluminum flake pigment.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: June 30, 2009
    Assignee: Prime Polymer Co., Ltd.
    Inventors: Yoshio Sugimoto, Ikunori Sakai, Yusuke Umetani, Naoki Shoji, Keita Nagano, Takao Mizoshita, Isamu Yamaguchi
  • Patent number: 7445667
    Abstract: An aluminum flake pigment suitable for use in metallic paints, metallic inks and the like is finely flaked in a grinder to include small aluminum flakes with a maximum dimension of not more than 10 ?m, wherein these small aluminum flakes have a mean aspect ratio from 8 to 20. Overall, the aluminum flakes of the aluminum flake pigment preferably have a mean particle size from 3 to 20 ?m. The grinder produces the aluminum flake pigment by flaking an aluminum powder in an organic solvent using steel ball grinding media having diameters of 0.3 to 1.0 mm.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: November 4, 2008
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventors: Keita Nagano, Takao Mizoshita
  • Patent number: 7309391
    Abstract: An aluminum flake pigment containing aluminum flakes as basic particles, said aluminum flakes having an average particle diameter in the range of 3 to 20 ?m and an average value of minimum diameter/maximum diameter of at least 0.6.
    Type: Grant
    Filed: February 16, 2004
    Date of Patent: December 18, 2007
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventor: Keita Nagano
  • Publication number: 20070240616
    Abstract: An aluminum flake pigment suitable for use in metallic paints, metallic inks and the like is finely flaked in a grinder to include small aluminum flakes with a maximum dimension of not more than 10 ?m, wherein these small aluminum flakes have a mean aspect ratio from 8 to 20. Overall, the aluminum flakes of the aluminum flake pigment preferably have a mean particle size from 3 to 20 ?m. The grinder produces the aluminum flake pigment by flaking an aluminum powder in an organic solvent using steel ball grinding media having diameters of 0.3 to 1.0 mm.
    Type: Application
    Filed: June 14, 2007
    Publication date: October 18, 2007
    Applicant: Toyo Aluminium Kabushiki Kaisha
    Inventors: Keita Nagano, Takao Mizoshita
  • Publication number: 20060058419
    Abstract: The present invention provides an aluminum flake pigment comprising aluminum flakes as basic particles, which aluminum flakes have an average particle diameter in the range of 3 to 20 ?m and an average value of minimum diameters/maximum diameters of at least 0.6.
    Type: Application
    Filed: February 16, 2004
    Publication date: March 16, 2006
    Inventor: Keita Nagano
  • Publication number: 20050250892
    Abstract: To provide a resin composition comprising a polypropylene resin composition and an aluminum flake pigment for use as an automotive resin composition, which is excellent in mechanical strength, physical properties and flowability, and enables to produce molded products showing good metallic appearance. A composition comprising a crystalline propylene/ethylene block copolymer, an elastomeric polymer and an inorganic filler is a preferred example of the polypropylene resin composition, and aluminum flakes surface-coated with a polymer containing as constituent units acrylic acid, an acrylic acid ester, epoxylated polybutadiene and divinylbenzene are preferred examples of the aluminum flake pigment.
    Type: Application
    Filed: August 22, 2003
    Publication date: November 10, 2005
    Inventors: Yoshio Sugimoto, Ikunori Sakai, Yusuke Umetani, Naoki Shoji, Keita Nagano, Takao Mizoshita, Isamu Yamaguchi
  • Publication number: 20040250731
    Abstract: In order to provide a method of manufacturing an aluminum flake pigment having a small mean particle size as well as high brightness, a method of manufacturing an aluminum flake pigment including a step of flaking aluminum powder in an organic solvent with a grinder having grinding media, which grinding media contain steel ball grinding media formed by spherical media consisting of a material including steel and having diameters in the range of 0.3 mm to 1.0 mm, is provided. The mean particle size (D50Al) of this aluminum powder is preferably in the range of 1.0 to 10.0 &mgr;m. Further, this grinder is preferably a ball mill.
    Type: Application
    Filed: March 4, 2004
    Publication date: December 16, 2004
    Inventors: Keita Nagano, Takao Mizoshita