Patents by Inventor Kenta Iwai

Kenta Iwai 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: 20220157520
    Abstract: A method of producing a compound for bonded magnets, the method including: heat-curing a thermosetting resin and a curing agent having a ratio of the number of reactive groups of the curing agent to the number of reactive groups of the thermosetting resin of at least 2 but not higher than 11 to obtain an additive for bonded magnets; and kneading the additive for bonded magnets, magnetic powder, and a thermoplastic resin to obtain a compound for bonded magnets in which a filling ratio of the magnetic powder is at least 91.5% by mass.
    Type: Application
    Filed: November 16, 2021
    Publication date: May 19, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Satoshi YAMANAKA, Takayuki YANO, Shuichi TADA, Masahiro ABE, Kenta IWAI
  • Publication number: 20220056235
    Abstract: The present invention relates to a porous membrane including a polymer including a polyvinylidene fluoride-based resin as a main component, and a branched polyvinylidene fluoride-based resin as the polyvinylidene fluoride-based resin, in which the polymer has a value of a of 0.32 to 0.41 and a value of b of 0.18 to 0.42, each of which is determined by approximation according to the formula 1 below from a radius of gyration <S2>1/2 and an absolute molecular weight Mw of the polymer which are measured by GPC-MALS (gel permeation chromatograph equipped with a multi-angle light scattering detector).
    Type: Application
    Filed: December 24, 2019
    Publication date: February 24, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Shun Shimura, Masayuki Hanakawa, Kenta Iwai, Takaaki Yasuda
  • Patent number: 11235989
    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: Grant
    Filed: June 23, 2017
    Date of Patent: February 1, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shun Shimura, Masayuki Hanakawa, Kenta Iwai, Tamotsu Kitade, Masahiro Kimura
  • Patent number: 11141698
    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: October 12, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shun Shimura, Kenta Iwai, Masayuki Hanakawa, Tamotsu Kitade, Masahiro Kimura, Atsushi Kobayashi, Aya Nishio
  • Patent number: 11077407
    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: Grant
    Filed: May 30, 2017
    Date of Patent: August 3, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kenta Iwai, Masayuki Hanakawa, Tamotsu Kitade, Masahiro Kimura, Toshiyuki Ishizaki
  • Patent number: 11058996
    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: Grant
    Filed: February 24, 2017
    Date of Patent: July 13, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takaaki Yasuda, Masayuki Hanakawa, Kenta Iwai, Toshiyuki Ishizaki
  • Patent number: 11020709
    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: Grant
    Filed: June 23, 2017
    Date of Patent: June 1, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Shun Shimura, Kenta Iwai, Masayuki Hanakawa, Tamotsu Kitade, Masahiro Kimura
  • 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
  • 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
  • Patent number: 10505770
    Abstract: A signal processing device according to an embodiment includes a plurality of signal processing units and a pseudo signal generating unit. The plurality of signal processing units are provided in a plurality of reception antennas which receive reflection signals of a transmission signal reflected on an object, and perform signal processing in parallel on beat signals which are generated based on the transmission signal and the reflections signals. The pseudo signal generating unit generates a pseudo signal imitating the beat signal, and inputs the pseudo signal as a target of the signal processing into the plurality of signal processing units in parallel.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: December 10, 2019
    Assignees: FUJITSU TEN LIMITED, ASAHI KASEI MICRODEVICES CORPORATION, DENSO CORPORATION
    Inventors: Daisuke Enomoto, Kazuhiro Komatsu, Kenta Iwai, Takeshi Tanaka, Minoru Uehara, Tsuyoshi Sakakibara, Naoto Kusakawa, Hideki Kitagawa
  • 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: 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: 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