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).
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Publication number: 20190330085Abstract: 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: ApplicationFiled: June 23, 2017Publication date: October 31, 2019Applicant: Toray Industries, Inc.Inventors: Shun SHIMURA, Masayuki HANAKAWA, Kenta IWAI, Tamotsu KITADE, Masahiro KIMURA
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Patent number: 10456753Abstract: 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: GrantFiled: June 24, 2016Date of Patent: October 29, 2019Assignee: TORAY INDUSTRIES, INC.Inventors: Takaaki Yasuda, Masayuki Hanakawa, Kenta Iwai, Toshiyuki Ishizaki, Tamotsu Kitade, Masahiro Kimura
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Publication number: 20190168167Abstract: 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: ApplicationFiled: June 23, 2017Publication date: June 6, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Shun SHIMURA, Kenta IWAI, Masayuki HANAKAWA, Tamotsu KITADE, Masahiro KIMURA
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Publication number: 20190070565Abstract: 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: ApplicationFiled: February 24, 2017Publication date: March 7, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Takaaki YASUDA, Masayuki HANAKAWA, Kenta IWAI, Toshiyuki ISHIZAKI
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Publication number: 20190015786Abstract: 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: ApplicationFiled: December 26, 2016Publication date: January 17, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Shun SHIMURA, Kenta IWAI, Masayuki HANAKAWA, Tamotsu KITADE, Masahiro KIMURA, Atsushi KOBAYASHI, Aya NISHIO
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Publication number: 20180369757Abstract: 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: ApplicationFiled: June 24, 2016Publication date: December 27, 2018Applicant: TORAY INDUSTRIES, INC.Inventors: Takaaki YASUDA, Masayuki HANAKAWA, Kenta IWAI, Toshiyuki ISHIZAKI, Tamotsu KITADE, Masahiro KIMURA
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Patent number: 10040033Abstract: 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: GrantFiled: November 27, 2014Date of Patent: August 7, 2018Assignee: TORAY INDUSTRIES, INC.Inventors: Masayuki Hanakawa, Koichi Takada, Takahiro Tokuyama, Kenta Iwai
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Publication number: 20180057974Abstract: An object of the present invention is to provide a stretching method for producing a membrane of narrowed hollow fibers while suppressing hollow fiber crushing (flattening), using a simple stretching process. The present invention relates to a method for manufacturing a hollow fiber membrane that performs narrowing of diameter of a hollow fiber by stretching, that is, includes a step of narrowing diameter of a hollow fiber by stretching the hollow fiber that has been subjected to a spinning step, using rolls each of which is formed with a groove.Type: ApplicationFiled: March 31, 2016Publication date: March 1, 2018Applicant: TORAY INDUSTRIES, INC.Inventors: Kenta IWAI, Toshiyuki ISHIZAKI
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Patent number: 9901883Abstract: 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: GrantFiled: December 25, 2015Date of Patent: February 27, 2018Assignee: TORAY INDUSTRIES, INC.Inventors: Masayuki Hanakawa, Kenta Iwai, Toshiyuki Ishizaki, Tamotsu Kitade, Masahiro Kimura
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Publication number: 20170348649Abstract: 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: ApplicationFiled: December 25, 2015Publication date: December 7, 2017Applicant: TORAY INDUSTRIES, INC.Inventors: Masayuki HANAKAWA, Kenta IWAI, Toshiyuki ISHIZAKI, Tamotsu KITADE, Masahiro KIMURA
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Publication number: 20170157572Abstract: 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: ApplicationFiled: July 7, 2015Publication date: June 8, 2017Applicant: TORAY INDUSTRIES, INC.Inventors: Kenta IWAI, Toshiyuki ISHIZAKI, Tamotsu KITADE, Kenji KOMORI, Masayuki HANAKAWA
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Patent number: 9647648Abstract: A signal processor includes an amplifier that amplifies a control signal which is input into the amplifier to output an amplified control signal; and a controller that performs predetermined control based on the amplified control signal. When the control signal is not input into the amplifier, the amplifier amplifies a voltage signal input from a power source for driving the amplifier.Type: GrantFiled: January 22, 2015Date of Patent: May 9, 2017Assignee: FUJITSU TEN LIMITEDInventors: Kenta Iwai, Daisuke Enomoto, Kazuhiro Komatsu
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Publication number: 20160310907Abstract: 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: ApplicationFiled: November 27, 2014Publication date: October 27, 2016Applicant: TORAY INDUSTRIES, INC.Inventors: Masayuki HANAKAWA, Koichi TAKADA, Takahiro TOKUYAMA, Kenta IWAI
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Publication number: 20160061943Abstract: 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: ApplicationFiled: August 11, 2015Publication date: March 3, 2016Inventors: Daisuke ENOMOTO, Kazuhiro KOMATSU, Kenta IWAI, Takeshi TANAKA, Minoru UEHARA, Tsuyoshi SAKAKIBARA, Naoto KUSAKAWA, Hideki KITAGAWA
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Patent number: 9174174Abstract: A separation membrane including a separation-functional layer is provided, wherein the separation-functional layer contains a polyvinylidene fluoride-type resin having a melt viscosity of 3,300 Pa·s or more, and also the separation-functional layer has a three-dimensional network structure. A separation membrane is provided having high virus removal performance, high pure water permeability, and high physical durability and high chemical strength, which can also be used in the field of water treatment.Type: GrantFiled: September 18, 2009Date of Patent: November 3, 2015Assignee: Toray Industries, Inc.Inventors: Kenji Komori, Toshiyuki Ishizaki, Kenta Iwai, Xunyao Fu, Shinichi Minegishi, Nao Minaki
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Publication number: 20150229301Abstract: A signal processor includes an amplifier that amplifies a control signal which is input into the amplifier to output an amplified control signal; and a controller that performs predetermined control based on the amplified control signal. When the control signal is not input into the amplifier, the amplifier amplifies a voltage signal input from a power source for driving the amplifier.Type: ApplicationFiled: January 22, 2015Publication date: August 13, 2015Inventors: Kenta IWAI, Daisuke ENOMOTO, Kazuhiro KOMATSU
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Publication number: 20150021260Abstract: A separation membrane element including a pair of separation membranes containing two separation membranes arranged so that the filtrate-side surfaces thereof are disposed in mutually opposed relation, and a plurality of resin members bonded to both of the mutually opposed filtrate-side surfaces, a peripheral edge of the pair of separation membranes being sealed.Type: ApplicationFiled: February 19, 2013Publication date: January 22, 2015Applicant: Toray IndustriesInventors: Kenta Iwai, Shuji Furuno, Yoshifumi Odaka, Kenji Komori, Yasuharu Watanabe, Atsushi Kitanaka, Seiko Kantani, Hideaki Ando
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Publication number: 20110226689Abstract: A separation membrane including a separation-functional layer is provided, wherein the separation-functional layer contains a polyvinylidene fluoride-type resin having a melt viscosity of 3,300 Pa·s or more, and also the separation-functional layer has a three-dimensional network structure. A separation membrane is provided having high virus removal performance, high pure water permeability, and high physical durability and high chemical strength, which can also be used in the field of water treatment.Type: ApplicationFiled: September 18, 2009Publication date: September 22, 2011Applicant: TORAY INDUSTRIES, INC.Inventors: Kenji Komori, Toshiyuki Ishizaki, Kenta Iwai, Xunyao Fu, Shinichi Minegishi, Nao Minaki