Patents by Inventor Takeshi Hagio

Takeshi Hagio 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: 20200269188
    Abstract: Provided is a gas separation device configured to separate a non-hydrocarbon gas from a feed gas containing the non-hydrocarbon gas through use of a gas separation membrane, in which a decrease in operating rate can be suppressed, and economic efficiency is satisfactory. A first membrane module (1) and a second membrane module (2) are arranged in parallel to each other with respect to supply lines for a feed gas. Gas lines for regeneration (14, 15) ((24, 25)), which are branched from a permeate gas line (13) ((23)) of the membrane module (1) ((2)), and which are joined to a feed gas line (21) ((11)) configured to supply the feed gas to the membrane module (2) ((1)), are provided. Under a state in which the feed gas is supplied to the membrane module (1), a permeate gas through the membrane module (1) is supplied, as a gas for regeneration, to the membrane module (2) through the gas lines for regeneration (14, 15).
    Type: Application
    Filed: May 12, 2017
    Publication date: August 27, 2020
    Inventors: Hiroaki Hasegawa, Yasushi Fujimora, Aiko Matsuyama, Shuichi Oguro, Keiichi Nishida, Akiko Fukuta, Kenjii Yajima, Makiko Ichikawa, Takeshi Hagio, Naoko Takahashi, Makoto Miyahara, Katsuya Shimizu
  • Publication number: 20200197879
    Abstract: A zeolite membrane complex comprises: a support; and a zeolite membrane formed on the support. The membrane is of SAT-type zeolite, and in an X-ray diffraction pattern obtained by X-ray irradiation to the zeolite membrane, a peak intensity around 2?=13.9° is 1.5 times or more a peak intensity around 2?=8.5°.
    Type: Application
    Filed: March 2, 2020
    Publication date: June 25, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kenichi NODA, Aya MIURA, Ryotaro YOSHIMURA, Takeshi HAGIO
  • Patent number: 10688434
    Abstract: The gas separation method is executed under a condition in which a partial pressure of a first gas (G1) in a feed gas that contains at least mutually different gases being the first gas (G1) and a second gas (G2) becomes less than or equal to a total pressure of a permeate-side space (S2) of a gas separation membrane (30). The gas separation method includes a step of causing flow of a sweep gas that contains at least a third gas (G3) being a different gas from the first gas (G1) and the second gas (G2) into the permeate-side space (S2) of the gas separation membrane (30) while supplying a feed gas to a feed-side space (S1) of the gas separation membrane (30). The permeation rate of the first gas (G1) in the gas separation membrane (30) is greater than the permeation rate respectively of the second gas (G2) and the third gas (G3).
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: June 23, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Kenichi Noda, Takeshi Hagio
  • Publication number: 20200122096
    Abstract: A dehydration method is a dehydration method for selectively separating water from a mixture that contains water, and the method includes a step of supplying the mixture to a supply side space of a separation membrane, and a step of making a pressure difference between the supply side space and a permeation side space of the separation membrane. The separation membrane includes a first zeolite membrane that faces the permeation side space and is constituted by a first zeolite and a second zeolite membrane that faces the supply side space and is adjacent to the first zeolite membrane. The second zeolite membrane is constituted by a second zeolite that has the same framework structure as framework of the first zeolite and has a lower Si/Al atom ratio than a Si/Al atom ratio of the first zeolite.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 23, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kenichi Noda, Makoto Miyahara, Katsuya Shimizu, Takeshi Hagio
  • Patent number: 10625215
    Abstract: A method for manufacturing a zeolite membrane structure includes a step of forming a first zeolite membrane on a porous support by hydrothermal synthesis in a state in which the porous support is immersed in a first zeolite membrane formation solution, a step of immersing the porous support formed the first zeolite membrane for greater than or equal to 5 minutes in a second zeolite membrane formation solution at greater than or equal to 10 degrees C. and less than or equal to 70 degrees C. and greater than or equal to pH 10, and a step of forming a second zeolite membrane on the first zeolite membrane by hydrothermal synthesis in a state in which the porous support formed the first zeolite membrane is immersed in the second zeolite membrane formation solution. The first zeolite membrane and the second zeolite membrane share at least one composite building unit constituting a framework structure.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: April 21, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Kenichi Noda, Takeshi Hagio, Makoto Miyahara
  • Publication number: 20200101419
    Abstract: A dehydration method is a dehydration method for selectively separating water from a mixture that contains water, using a zeolite membrane having an AFX structure, and the method includes a step of supplying the mixture to a supply side space of the zeolite membrane having an AFX structure, and a step of making a pressure difference between the supply side space and a permeation side space of the zeolite membrane having an AFX structure.
    Type: Application
    Filed: December 4, 2019
    Publication date: April 2, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kenichi NODA, Makoto Miyahara, Katsuya Shimizu, Takeshi Hagio
  • Publication number: 20200101426
    Abstract: A dehydration method is a dehydration method for selectively separating water from a mixture that contains water, and the method includes a step of supplying the mixture to a supply side space of a zeolite membrane having an ERI structure, and a step of making a pressure difference between the supply side space and a permeation side space of the zeolite membrane having an ERI structure.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kenichi NODA, Makoto MIYAHARA, Katsuya SHIMIZU, Takeshi HAGIO
  • Patent number: 10576414
    Abstract: The gas separation method is executed under a condition in which a partial pressure of a first gas (G1) in a feed gas that contains at least mutually different gases being the first gas (G1), a second gas (G2) and a third gas (G3) becomes less than or equal to the total pressure of a permeate-side space (S2) of a gas separation membrane (30). The gas separation method includes a step of causing flow of a sweep gas that contains at least the third gas (G3) into the permeate-side space (S2) of the gas separation membrane (30) while supplying a feed gas to a feed-side space (S1) of the gas separation membrane (30). The permeation rate of the first gas (G1) in the gas separation membrane (30) is greater than the permeation rate of the second gas (G2).
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: March 3, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Kenichi Noda, Takeshi Hagio
  • Patent number: 10550004
    Abstract: A production method for zeolite powder includes disintegrating zeolite seed crystals in a silica unsaturated alkali solution containing an alkali source, preparing a silica saturated alkali solution by adding a silica source to the silica unsaturated alkali solution containing the zeolite seed crystals, and synthesizing zeolite powder by hermetically heating the silica saturated alkali solution.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: February 4, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Takeshi Hagio, Makoto Miyahara, Hiroyuki Shibata, Makiko Ichikawa
  • Patent number: 10550005
    Abstract: A production method for zeolite powder containing forming zeolite seed crystals by wet pulverizing zeolite crystals using a silica unsaturated alkali solution containing an alkali source, preparing a silica saturated alkali solution by adding a silica source to the silica unsaturated alkali solution containing the zeolite seed crystals, and synthesizing zeolite powder by hermetically heating the silica saturated alkali solution.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: February 4, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Takeshi Hagio, Makoto Miyahara, Hiroyuki Shibata, Makiko Ichikawa
  • Publication number: 20200031680
    Abstract: A zeolite crystal has an AFX structure and a hexagonal plate shape. Ratio of a maximum Feret diameter (L1) in a plan view with respect to a plate thickness in a side view is greater than or equal to 2.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 30, 2020
    Applicant: NGK Insulators, Ltd.
    Inventors: Takeshi Hagio, Kenichi Noda, Makoto Miyahara, Katsuya Shimizu
  • Publication number: 20200030753
    Abstract: A peak intensity of a (110) plane is greater than or equal to 2.5 times a peak intensity of a (004) plane in an X-ray diffraction pattern obtained by irradiation of X-rays to a membrane surface of the AFX membrane.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 30, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Takeshi HAGIO, Kenichi Noda, Makoto Miyahara, Katsuya Shimizu, Aya Miura, Ryotaro Yoshimura
  • Publication number: 20200023319
    Abstract: A peak intensity of a (004) plane is greater than or equal to 3 times a peak intensity of a (110) plane in an X-ray diffraction pattern obtained by irradiation of X-rays to a membrane surface of an AFX membrane.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 23, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Takeshi HAGIO, Kenichi Noda, Makoto Miyahara, Katsuya Shimizu
  • Publication number: 20200009509
    Abstract: A method of synthesis for an aluminophosphate-based zeolite membrane includes a steps of preparing a mixed solution with a pH greater than or equal to 6 and less than or equal to 9 by mixing an acidic phosphorous source with an alkali source, a steps of preparing a starting material solution by adding and mixing an aluminum source to the prepared mixed solution, and a steps of synthesizing an aluminophosphate-based zeolite membrane by hydrothermally synthesizing the starting material solution.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Takeshi HAGIO, Kenichi NODA, Makoto MIYAHARA, Katsuya SHIMIZU
  • Publication number: 20200009512
    Abstract: A peak intensity of a (002) plane is greater than or equal to 0.5 times a peak intensity of a (100) plane in an X-ray diffraction pattern obtained by irradiation of X-rays to a membrane surface of the ERI membrane.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Takeshi HAGIO, Kenichi Noda, Makoto Miyahara, Katsuya Shimizu, Aya Miura, Ryotaro Yoshimura
  • Publication number: 20200001229
    Abstract: A method for inspecting a separation membrane module has a sealing step for sealing a gas for inspection on a primary side of zeolite membrane. The dynamic molecular diameter for the gas for inspection is greater than 1.07 times the pore diameter in the zeolite membrane. The gas for inspection has the characteristic of having a rate of reduction for a CO2 gas permeation rate in the zeolite membrane of less than 10% when a separation membrane structure is allowed to stand for 60 minutes in the gas for inspection at 25 degrees C. and 0.1 MPaG.
    Type: Application
    Filed: September 9, 2019
    Publication date: January 2, 2020
    Applicant: NGK INSULATORS, LTD
    Inventors: Katsuya SHIMIZU, Makiko Ichikawa, Kenji Yajima, Takeshi Hagio
  • Publication number: 20190391064
    Abstract: A method for inspecting a separation membrane structure includes an assembly step of sealing a separation membrane structure that includes a porous substrate and a separation membrane into a casing, and an inspection step of applying pressure to an inspection liquid that has filled a first main surface side of the separation membrane.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 26, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Makoto MIYAHARA, Makiko ICHIKAWA, Kenji YAJIMA, Takeshi HAGIO
  • Patent number: 10486111
    Abstract: A separation membrane structure includes a porous support, a first separation membrane and a second separation membrane. The first separation membrane is formed on the porous support and contains high silica zeolite having Si/Al atomic ratio of greater than or equal to 200. The second separation membrane is formed on the first separation membrane and contains cation.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: November 26, 2019
    Assignee: NGK Insulators, Ltd.
    Inventors: Makoto Miyahara, Kenichi Noda, Makiko Ichikawa, Takeshi Hagio
  • Publication number: 20190240626
    Abstract: A drying method for a separation membrane includes supplying a gas for drying to the separation membrane so that a value obtained by dividing the difference between a maximum value and a minimum value of a flow rate of the gas for drying on a membrane surface of the separation membrane by the minimum value of the flow rate is less than or equal to 15%. The gas for drying is less than or equal to 40 degree C. and contains a water-soluble gas that has a solubility in 1 cm3 of water of greater than or equal to 0.5 cm3 in conditions of 40 degree C. and 1 atmosphere.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kenichi NODA, Takeshi Hagio
  • Patent number: 10258933
    Abstract: Provided is a zeolite membrane manufactured by: subjecting a porous body to heat treatment at 400° C. or more in the presence of oxygen as pretreatment, before adhering zeolite seed crystals to a surface of the porous body; storing the porous body under an environment of humidity of 30% or more for 12 hours or more after the heat treatment; and subsequently adhering the zeolite seed crystals to the porous body. The zeolite membrane having oxygen eight-membered rings, which is manufactured by subjecting the porous body to the heat treatment, provides a value that is obtained by dividing a permeance of CF4 by a permeance of CO2 to be 0.015 or less, and has fewer defects.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 16, 2019
    Assignee: NGK Insulators, Ltd.
    Inventors: Kenji Yajima, Takeshi Hagio, Makoto Miyahara, Tetsuya Uchikawa, Naoko Inukai, Makiko Ichikawa