Patents by Inventor Tsugiyoshi Osakabe

Tsugiyoshi Osakabe 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: 20220056604
    Abstract: Apparatus for producing alkali hydroxide and method for operating apparatus for producing alkali hydroxide are provided. A cooling chamber through which a coolant can pass is constructed by placing a separation wall in a cathode chamber on a side opposite to an ion-exchange membrane, and a flow rate adjuster, such as manual valves, which can adjust the supply flow rate of the coolant is placed in each unit cell. The electrolytic temperature of each unit cell is regulated at an optimum operating temperature depending on the current density by adjusting the flow rate of the coolant without individually adjusting the flow rate of salt water supplied to the unit cell or the concentration of the salt water.
    Type: Application
    Filed: November 7, 2021
    Publication date: February 24, 2022
    Applicants: TOAGOSEI CO., LTD., KANEKA CORPORATION
    Inventors: Tsutomu OHNISHI, Tsugiyoshi OSAKABE, Tatsurou YAMASHITA, Takuya SHIMURA, Mikihito SUGIYAMA, Yukinori IGUCHI
  • Publication number: 20200024758
    Abstract: A method for producing sodium hydroxide and/or chlorine by electrolyzing saltwater includes supplying saltwater to an anode chamber of a unit cell in a two-chamber type electrolytic cell, humidifying oxygen-containing gas in a humidifying chamber of the unit cell, and supplying humidified oxygen-containing gas generated in the humidifying chamber to a cathode chamber of the unit cell. The humidifying chamber is adjoined to and in heat exchange relation with the anode chamber or the cathode chamber in the unit cell, or is adjoined to and in heat exchange relation with an anode chamber or a cathode chamber in another unit cell adjacent to the unit cell. The oxygen-containing gas is humidified by generating water vapor with heat from the anode chamber or the cathode chamber adjoined to the humidifying chamber.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Applicants: KANEKA CORPORATION, TOAGOSEI CO., LTD.
    Inventors: Tadayoshi Shirakawa, Tomonori Idutsu, Tsugiyoshi Osakabe, Daisuke Hirota
  • Publication number: 20190226104
    Abstract: Apparatus for producing alkali hydroxide and method for operating apparatus for producing alkali hydroxide are provided. A cooling chamber through which a coolant can pass is constructed by placing a separation wall in a cathode chamber on a side opposite to an ion-exchange membrane, and a flow rate adjuster, such as manual valves, which can adjust the supply flow rate of the coolant is placed in each unit cell. The electrolytic temperature of each unit cell is regulated at an optimum operating temperature depending on the current density by adjusting the flow rate of the coolant without individually adjusting the flow rate of salt water supplied to the unit cell or the concentration of the salt water.
    Type: Application
    Filed: March 31, 2017
    Publication date: July 25, 2019
    Applicants: TOAGOSEI CO., LTD., KANEKA CORPORATION
    Inventors: Tsutomu OHNISHI, Tsugiyoshi OSAKABE, Tatsurou YAMASHITA, Takuya SHIMURA, Mikihito SUGIYAMA, Yukinori IGUCHI
  • Patent number: 8197649
    Abstract: [Problems] The liquid pressure of an anode chamber in a two-chamber ion exchange membrane electrolytic cell using a gas diffusion electrode are different among one another depending on depths so that the liquid pressures are applied on an anode or an ion exchange membrane, thereby introducing damage or deformation of the elements. [Means for Solving] A cushion material 10 is accommodated between a cathode gas chamber back plate 9 and a gas diffusion electrode 7 of an ion exchange membrane electrolytic cell 1 such that a repulsive force of the cushion material at the bottom part of the cathode gas chamber is larger than that at the top part. The excessive pressure applied to an ion exchange membrane is suppressed to prevent the generation of scratches or the like by decreasing the repulsive force of the cushion material toward the top in accordance with a differential pressure between an anode chamber pressure and a cathode gas chamber pressure.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: June 12, 2012
    Assignees: Chlorine Engineers Corp., Ltd., Kaneka Corporation, Toagosei Co., Ltd.
    Inventors: Koji Saiki, Kiyohito Asaumi, Mitsuharu Hamamori, Tsugiyoshi Osakabe
  • Patent number: 7892298
    Abstract: The present invention contemplates for providing a producing method which can give highly pure caustic potash in a relatively simple process, in response to the above-described demand for increased high purity in caustic potash. A method to give highly pure caustic potash containing almost no impurities of sodium, chlorine, and heavy metals, such as iron, chromium and nickel, through crystallization, by bringing an aqueous caustic potash solution having a sodium content of 200 mg/kg or less and a chlorine content of 15 mg/kg or less when calculated in terms of a weight of potassium chloride, in which a caustic potash concentration of 48% is to be a standard, into a high temperature state.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: February 22, 2011
    Assignee: Toagosei Co., Ltd.
    Inventors: Tsugiyoshi Osakabe, Sei Imayoshi, Mitsuharu Hamamori
  • Publication number: 20100072144
    Abstract: A method of treating a ballast water for sterilizing bacteria, microorganisms or organisms in the ballast water in a hold or ballast tank of a ship, has the steps of: sterilizing the bacteria, microorganisms or organisms by adjusting a residual chlorine concentration in the ballast water to 1 mass ppm or more and 1000 mass ppm or less with a hypochlorite, and removing the residual chlorine in the ballast water with a sulfite.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 25, 2010
    Inventors: Tsugiyoshi Osakabe, Masanori Inoko, Yasushi Tsuchiya
  • Patent number: 7569083
    Abstract: In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alkyl ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound layer surface with respect to the gas diffusion electrode assembly. Adjacent gas diffusion electrodes are heat fusion bonded together, or heat fusion bonding is carried out using the bonding piece in a frame form. Adjacent gas diffusion electrodes are sealed up by heat fusion bonding, using a material that is similar to the material that forms the gas diffusion electrodes.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: August 4, 2009
    Assignees: Chlorine Engineers Corp. Ltd., Tosoh Corporation, Mitsui Chemicals, Inc., Toagosei Co., Ltd., Kaneka Corporation, Asahi Glass Company, Limited, Asahi Kasei Chemicals Corporation, Daiso Co., Ltd., Tokuyama Corporation
    Inventors: Shinji Katayama, Kiyohito Asaumi, Hiroaki Aikawa, Tsugiyoshi Osakabe, Mitsuharu Hamamori, Tatsuhito Kimura, Koji Saiki, Kenji Nonomura, Naoya Okada, Osamu Ichinose
  • Publication number: 20090110629
    Abstract: The present invention contemplates for providing a producing method which can give highly pure caustic potash in a relatively simple process, in response to the above-described demand for increased high purity in caustic potash. A method to give highly pure caustic potash containing almost no impurities of sodium, chlorine, and heavy metals, such as iron, chromium and nickel, through crystallization, by bringing an aqueous caustic potash solution having a sodium content of 200 mg/kg or less and a chlorine content of 15 mg/kg or less when calculated in terms of a weight of potassium chloride, in which a caustic potash concentration of 48% is to be a standard, into a high temperature state.
    Type: Application
    Filed: August 8, 2006
    Publication date: April 30, 2009
    Inventors: Tsugiyoshi Osakabe, Sei Imayoshi, Mitsuharu Hamamori
  • Publication number: 20090071820
    Abstract: [Problems] The liquid pressure of an anode chamber in a two-chamber ion exchange membrane electrolytic cell using a gas diffusion electrode are different among one another depending on depths so that the liquid pressures are applied on an anode or an ion exchange membrane, thereby introducing damage or deformation of the elements. [Means for Solving] A cushion material 10 is accommodated between a cathode gas chamber back plate 9 and a gas diffusion electrode 7 of an ion exchange membrane electrolytic cell 1 such that a repulsive force of the cushion material at the bottom part of the cathode gas chamber is larger than that at the top part. The excessive pressure applied to an ion exchange membrane is suppressed to prevent the generation of scratches or the like by decreasing the repulsive force of the cushion material toward the top in accordance with a differential pressure between an anode chamber pressure and a cathode gas chamber pressure.
    Type: Application
    Filed: May 17, 2006
    Publication date: March 19, 2009
    Inventors: Koji Saiki, Kiyohito Asaumi, Mitsuharu Hamamori, Tsugiyoshi Osakabe
  • Publication number: 20080271847
    Abstract: In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alkyl ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound layer surface with respect to the gas diffusion electrode assembly. Adjacent gas diffusion electrodes are heat fusion bonded together, or heat fusion bonding is carried out using the bonding piece in a frame form. Adjacent gas diffusion electrodes are sealed up by heat fusion bonding, using a material that is similar to the material that forms the gas diffusion electrodes.
    Type: Application
    Filed: July 1, 2008
    Publication date: November 6, 2008
    Applicants: CHLORINE ENGINEERS CORP., LTD., TOSOH CORPORATION, MITSUI CHEMICALS, INC., TOAGOSEI CO., LTD., KANEKA CORPORATION, ASAHI GLASS COMPANY, LIMITED, ASAHI KASEI CHEMICALS CORPORATION, DAISO CO., LTD., TOKUYAMA CORPORATION
    Inventors: Shinji Katayama, Kiyohito Asaumi, Hiroaki Aikawa, Tsugiyoshi Osakabe, Mitsuharu Hamamori, Tatsuhito Kimura, Koji Saiki, Kenji Nonomura, Naoya Okada, Osamu Ichinose
  • Patent number: 7404878
    Abstract: In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alkyl ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound layer surface with respect to the gas diffusion electrode assembly. Adjacent gas diffusion electrodes are heat fusion bonded together, or heat fusion bonding is carried out using the bonding piece in a frame form. Adjacent gas diffusion electrodes are sealed up by heat fusion bonding, using a material that is similar to the material that forms the gas diffusion electrodes.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: July 29, 2008
    Assignees: Chlorine Engineers Corp., Ltd., Tosoh Corporation, Mitsui Chemicals, Inc., Toagosei Co., Ltd., Kaneka Corporation, Asahi Glass Company, Limited, Asahi Kasei Chemicals Corporation, Daiso Co., Ltd., Tokuyama Corporation
    Inventors: Shinji Katayama, Kiyohito Asaumi, Hiroaki Aikawa, Tsugiyoshi Osakabe, Mitsuharu Hamamori, Tatsuhito Kimura, Koji Saiki, Kenji Nonomura, Naoya Okada, Osamu Ichinose
  • Publication number: 20040256223
    Abstract: In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alky ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound layer surface with respect to the gas diffusion electrode assembly. Adjacent gas diffusion electrodes are heat fusion bonded together, or heat fusion bonding is carried out using the bonding piece in a frame form. Adjacent gas diffusion electrodes are sealed up by heat fusion bonding, using a material that is similar to the material that forms the gas diffusion electrodes.
    Type: Application
    Filed: March 30, 2004
    Publication date: December 23, 2004
    Inventors: Shinji Katayama, Kiyohito Asaumi, Hiroaki Aikawa, Tsugiyoshi Osakabe, Mitsuharu Hamamori, Tatsuhito Kimura, Koji Saiki, Kenji Nonomura, Naoya Okada, Osamu Ichinose
  • Publication number: 20040245104
    Abstract: In order to discharge current from a gas diffusion electrode in an electrolytic unit cell including a gas chamber, the gas diffusion electrode is electrically connected to the wall surface of the gas chamber having conductivity through an electric connecting element in partial contact with the gas diffusion electrode
    Type: Application
    Filed: March 30, 2004
    Publication date: December 9, 2004
    Applicants: CHLORINE ENGINEERS CORP., LTD., MITSUI CHEMICALS, INC., TOAGOSEI CO., LTD., KANEKA CORPORATION, TOSOH CORPORATION, ASAHI GLASS COMPANY, LIMITED, ASAHI KASEI CHEMICALS CORPORATION, DAISO CO., LTD., TOKUYAMA CORPORATION
    Inventors: Hiroaki Aikawa, Tsugiyoshi Osakabe, Mitsuharu Hamamori, Shinji Katayama, Kiyohito Asaumi