Patents by Inventor Masayuki Hanakawa

Masayuki Hanakawa 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: 10974199
    Abstract: This hollow fiber membrane module is provided with: a cylindrical case having a first end and a second end in the direction of height; a plurality of hollow fiber membranes accommodated in the cylindrical case; and a first potting unit attaching the end parts of the plurality of hollow fiber membranes positioned at the first end of the cylindrical case while the end parts are open. The hollow fiber membranes have a rupture strength of 23 MPa or more. The filling rate for the hollow fiber membranes is 40-80%.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: April 13, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Atsushi Kobayashi, Kenta Iwai, Masayuki Hanakawa, Tamotsu Kitade, Masahiro Kimura
  • Patent number: 10766007
    Abstract: The present invention provides a hollow fiber membrane module that can effectively resolve the accumulation of suspended solids within the membrane module, lower running costs, and also operate stably. The present invention relates to a hollow fiber membrane molecule provided with: a cylindrical case having a first end and a second end in the direction of height; a plurality of hollow fiber membranes accommodated within the cylindrical case; and a first potting part accommodated within the cylindrical case and attaching the plurality of hollow fiber membranes together such that the end parts of the plurality of hollow membrane fibers at a first end side of the cylindrical case are open. The hollow fiber membranes are porous hollow fiber membranes having a breaking strength of 23 MPa, and the hollow membrane module has a membrane area per unit volume of 800-3700 m2/m3. The filling fraction for the hollow fiber membranes in a cross-section orthogonal to the direction of height of the cylindrical case is 25-38%.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: September 8, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shun Shimura, Kenta Iwai, Masayuki Hanakawa, Tamotsu Kitade, Masahiro Kimura, Atsushi Kobayashi, Aya Nishio
  • Publication number: 20200246756
    Abstract: The porous hollow-fiber membrane of the present invention comprises a fluororesin polymer, and has columnar structures oriented in the longitudinal direction thereof. In the porous hollow-fiber membrane, molecular chains of the fluororesin polymer have been oriented in the longitudinal direction of the porous hollow-fiber membrane and have an average value ? of Raman orientation parameter of 1.5-4.0.
    Type: Application
    Filed: May 30, 2017
    Publication date: August 6, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Kenta IWAI, Masayuki HANAKAWA, Tamotsu KITADE, Masahiro KIMURA, Toshiyuki ISHIZAKI
  • Publication number: 20200246754
    Abstract: The present invention relates to a hollow fiber membrane module provided with: a tubular casing having a first end and a second end in the axial direction; a plurality of hollow fiber membranes; a first potting part; and a second potting part, the hollow fiber membrane module further having a flow regulation structure in which a fluid flowing outside the hollow fiber membranes from the second end side toward the first end side forms a flow directed to the radial center on the second end side of the first potting part, and further forms a radial flow directed from the radial center to the radially outer peripheral side on the second end side of the first potting part.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 6, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Atsushi KOBAYASHI, Naoki NAKASHIMA, Kenji HAYASHIDA, Masayuki HANAKAWA
  • Publication number: 20200246759
    Abstract: The problem to be solved by the present invention is to provide a separation film mainly comprising a cellulose-based resin having high permeability. The present invention pertains to a separation film containing a cellulose ester, wherein the separation film is provided with a bicontinuous structure comprising voids and phases containing the cellulose ester, and the width of the voids is 1 to 200 nm inclusive.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Koichi TAKADA, Gohei YAMAMURA, Ryuichiro HIRANABE, Masayuki HANAKAWA, Hiroshi TAKAHASHI, Takaaki MIHARA, Masahiro KIMURA, Hiroki TOMIOKA
  • Patent number: 10702834
    Abstract: An object of the present invention is to provide a separation membrane having high mechanical strength and being less likely to cause clogging and capable of continuously maintaining high water permeation performance. The present invention relates to a separation membrane characterized in that the average diameter D1 of a spherical structure in a region within 10 ?m from a first surface in a separation membrane having a spherical structure layer formed of a thermoplastic resin and the average diameter D2 of a spherical structure in a region of 10 ?m to 20 ?m from a second surface satisfy the relational expression of D1>D2 and the average diameter D1 and the average diameter D3 of a spherical structure in a third region satisfy the relational expression of 1.10<D1/D3<4.00.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 7, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kenta Iwai, Toshiyuki Ishizaki, Tamotsu Kitade, Kenji Komori, Masayuki Hanakawa
  • Publication number: 20200206689
    Abstract: This hollow fiber membrane module is provided with: a cylindrical case having a first end and a second end in the direction of height; a plurality of hollow fiber membranes accommodated in the cylindrical case; and a first potting unit attaching the end parts of the plurality of hollow fiber membranes positioned at the first end of the cylindrical case while the end parts are open. The hollow fiber membranes have a rupture strength of 23 MPa or more. The filling rate for the hollow fiber membranes is 40-80%.
    Type: Application
    Filed: May 30, 2017
    Publication date: July 2, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Atsushi KOBAYASHI, Kenta IWAI, Masayuki HANAKAWA, Tamotsu KITADE, Masahiro KIMURA
  • Publication number: 20190330085
    Abstract: The present invention relates to a composite porous hollow-fiber membrane including a first layer and a second layer which each include a fluororesin-based polymer, in which at least a part of molecular chains of the fluororesin-based polymer is oriented in a longitudinal direction of the composite porous hollow-fiber membrane, the molecular chains of the fluororesin-based polymer have a degree of orientation it in the longitudinal direction of the composite porous hollow-fiber membrane of 0.4 or higher but less than 1.0, the degree of orientation it being calculated with the specific formula.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 31, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Shun SHIMURA, Masayuki HANAKAWA, Kenta IWAI, Tamotsu KITADE, Masahiro KIMURA
  • Patent number: 10456753
    Abstract: The present invention provides a porous hollow fiber membrane that has both high strength and high pure water permeability, and that exhibits excellent thermal deformation resistance. The present invention is related to a porous hollow fiber membrane containing a fluororesin-based polymer, and a manufacturing method of the membrane comprises a drawing step and a relaxing step. The porous hollow fiber membrane is characterized in that: the molecular chain of the polymer is oriented in the longitudinal direction of the hollow fiber membrane; and at the same time internal distortion of oriented non-crystalline chains, which is disadvantageous in terms of entropy, is alleviated.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: October 29, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takaaki Yasuda, Masayuki Hanakawa, Kenta Iwai, Toshiyuki Ishizaki, Tamotsu Kitade, Masahiro Kimura
  • Publication number: 20190168167
    Abstract: The present invention relates to a composite porous hollow-fiber membrane including a first layer and a second layer which each include a fluororesin-based polymer, in which the first layer has a columnar texture oriented in a longitudinal direction of the composite porous hollow-fiber membrane, the columnar texture has an average value v of a Raman orientation parameter calculated with the specific formula, and the second layer has a three-dimensional network texture and has an average surface-pore diameter of 5.0 nm to 5.0 ?m.
    Type: Application
    Filed: June 23, 2017
    Publication date: June 6, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Shun SHIMURA, Kenta IWAI, Masayuki HANAKAWA, Tamotsu KITADE, Masahiro KIMURA
  • Publication number: 20190070565
    Abstract: An object of the present invention is to provide a porous hollow-fiber membrane satisfying both high strength and high pure-water permeation performance and at the same time, having high bending resistance. The present invention relates to a porous hollow-fiber membrane including a fluororesin-based polymer, in which the porous hollow-fiber membrane has a columnar texture oriented in a longitudinal direction of the porous hollow-fiber membrane and when a photograph of a cross-section parallel to the longitudinal direction of the porous hollow-fiber membrane is binarized into a structure portion and a void portion, the following 1) and 2) are satisfied: 1) a proportion of an area of the void portion is from 20 to 50%, and 2) a value obtained by dividing a total of peripheral lengths of the void portions by a total of areas of the void portions is 2.0 ?m?1 or less.
    Type: Application
    Filed: February 24, 2017
    Publication date: March 7, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takaaki YASUDA, Masayuki HANAKAWA, Kenta IWAI, Toshiyuki ISHIZAKI
  • Publication number: 20190060838
    Abstract: The purpose of the present invention is to provide a porous molded body which is capable of adsorbing and removing low-molecular-weight organic matters or ions with high removal rate. The present invention relates to a porous molded body which is provided with: a plurality of columnar structures containing a crystalline polymer and having a (long side)/(short side) aspect ratio of 2 or more; and inorganic particles.
    Type: Application
    Filed: June 24, 2016
    Publication date: February 28, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Ryuichiro HIRANABE, Kentaro KOBAYASHI, Masayuki HANAKAWA, Tamotsu KITADE
  • Publication number: 20190015786
    Abstract: The present invention provides a hollow fiber membrane module that can effectively resolve the accumulation of suspended solids within the membrane module, lower running costs, and also operate stably. The present invention relates to a hollow fiber membrane molecule provided with: a cylindrical case having a first end and a second end in the direction of height; a plurality of hollow fiber membranes accommodated within the cylindrical case; and a first potting part accommodated within the cylindrical case and attaching the plurality of hollow fiber membranes together such that the end parts of the plurality of hollow membrane fibers at a first end side of the cylindrical case are open. The hollow fiber membranes are porous hollow fiber membranes having a breaking strength of 23 MPa, and the hollow membrane module has a membrane area per unit volume of 800-3700 m2/m3. The filling fraction for the hollow fiber membranes in a cross-section orthogonal to the direction of height of the cylindrical case is 25-38%.
    Type: Application
    Filed: December 26, 2016
    Publication date: January 17, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Shun SHIMURA, Kenta IWAI, Masayuki HANAKAWA, Tamotsu KITADE, Masahiro KIMURA, Atsushi KOBAYASHI, Aya NISHIO
  • Publication number: 20180369757
    Abstract: The present invention provides a porous hollow fiber membrane that has both high strength and high pure water permeability, and that exhibits excellent thermal deformation resistance. The present invention is related to a porous hollow fiber membrane containing a fluororesin-based polymer, and a manufacturing method of the membrane comprises a drawing step and a relaxing step. The porous hollow fiber membrane is characterized in that: the molecular chain of the polymer is oriented in the longitudinal direction of the hollow fiber membrane; and at the same time internal distortion of oriented non-crystalline chains, which is disadvantageous in terms of entropy, is alleviated.
    Type: Application
    Filed: June 24, 2016
    Publication date: December 27, 2018
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takaaki YASUDA, Masayuki HANAKAWA, Kenta IWAI, Toshiyuki ISHIZAKI, Tamotsu KITADE, Masahiro KIMURA
  • Patent number: 10093747
    Abstract: A method of producing a sugar liquid using a cellulose-containing biomass as a raw material includes (a) hydrolyzing a cellulose-containing biomass to produce an aqueous sugar solution and (b) filtering the obtained aqueous sugar solution through a reverse osmosis membrane to collect a purified sugar liquid from a feed side, while removing fermentation-inhibiting substances from a permeate side.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: October 9, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Atsushi Minamino, Masateru Ito, Hideki Sawai, Masayuki Hanakawa, Shin-ichi Minegishi, Katsushige Yamada
  • Publication number: 20180280893
    Abstract: The problem to be solved by the present invention is to provide a separation film mainly comprising a cellulose-based resin having high permeability. The present invention pertains to a separation film containing a cellulose ester, wherein the separation film is provided with a bicontinuous structure comprising voids and phases containing the cellulose ester, and the width of the voids is 1 to 200 nm inclusive.
    Type: Application
    Filed: September 30, 2016
    Publication date: October 4, 2018
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Koichi TAKADA, Gohei YAMAMURA, Ryuichiro HIRANABE, Masayuki HANAKAWA, Hiroshi TAKAHASHI, Takaaki MIHARA, Masahiro KIMURA, Hiroki TOMIOKA
  • Patent number: 10040033
    Abstract: An object of the present invention is to provide a multilayer separation membrane having excellent performance on both removal of suspended solids in water and adsorptive removal of metal ions in water. A multilayer separation membrane of the present invention includes: a porous adsorption layer including substantially a polymer having chelating functional groups; and a porous clarification layer, and the porous clarification layer is disposed neater to a raw water-side than the porous adsorption layer.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: August 7, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Masayuki Hanakawa, Koichi Takada, Takahiro Tokuyama, Kenta Iwai
  • Patent number: 9901883
    Abstract: An object of the present invention is to provide a porous hollow-fiber membrane having high strength while maintaining high pure-water permeation performance. A porous hollow-fiber membrane of the present invention is a porous hollow-fiber membrane including a fluororesin-based polymer, in which the porous hollow-fiber membrane has a columnar texture oriented in a longitudinal direction of the porous hollow-fiber membrane, and a molecular chain of the fluororesin-based polymer is oriented in the longitudinal direction of the porous hollow-fiber membrane.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: February 27, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Masayuki Hanakawa, Kenta Iwai, Toshiyuki Ishizaki, Tamotsu Kitade, Masahiro Kimura
  • Publication number: 20170348649
    Abstract: An object of the present invention is to provide a porous hollow-fiber membrane having high strength while maintaining high pure-water permeation performance. A porous hollow-fiber membrane of the present invention is a porous hollow-fiber membrane including a fluororesin-based polymer, in which the porous hollow-fiber membrane has a columnar texture oriented in a longitudinal direction of the porous hollow-fiber membrane, and a molecular chain of the fluororesin-based polymer is oriented in the longitudinal direction of the porous hollow-fiber membrane.
    Type: Application
    Filed: December 25, 2015
    Publication date: December 7, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Masayuki HANAKAWA, Kenta IWAI, Toshiyuki ISHIZAKI, Tamotsu KITADE, Masahiro KIMURA
  • Publication number: 20170157572
    Abstract: An object of the present invention is to provide a separation membrane having high mechanical strength and being less likely to cause clogging and capable of continuously maintaining high water permeation performance. The present invention relates to a separation membrane characterized in that the average diameter D1 of a spherical structure in a region within 10 ?m from a first surface in a separation membrane having a spherical structure layer formed of a thermoplastic resin and the average diameter D2 of a spherical structure in a region of 10 ?m to 20 ?m from a second surface satisfy the relational expression of D1>D2 and the average diameter D1 and the average diameter D3 of a spherical structure in a third region satisfy the relational expression of 1.10<D1/D3<4.00.
    Type: Application
    Filed: July 7, 2015
    Publication date: June 8, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Kenta IWAI, Toshiyuki ISHIZAKI, Tamotsu KITADE, Kenji KOMORI, Masayuki HANAKAWA