Patents by Inventor Koichi Takada

Koichi Takada 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: 10888822
    Abstract: The present invention provides a separation membrane having excellent separation performance and permeation performance, having high membrane strength, and mainly including a cellulose-based resin. The present invention relates to a separation membrane containing a cellulose ester and having a tensile elasticity of 1,500 to 6,500 MPa.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 12, 2021
    Assignee: Toray Industries, Inc.
    Inventors: Gohei Yamamura, Koichi Takada, Ryuichiro Hiranabe, Hiroki Tomioka
  • Patent number: 10799837
    Abstract: The problem addressed by the present invention is to provide a separation membrane with superior permeation performance and separation performance and having few occurrences of defects. The present invention relates to a separation membrane wherein: the separation membrane has a layer (I) with a thickness of 0.5-100 ?m; letting, in a cross-section in the direction of thickness of the layer (I), region a be a region with a depth of 50-150 nm from a surface (surface A), region b a region with a depth of 50-150 nm from the other surface (surface B), and region c a region with a thickness of 100 nm where the depth from both surfaces is the same, the average pore diameter Pa for region a and the average pore diameter Pb for region b are both 0.3-3.0 nm and the average pore diameter Pc for region c is 3.0 nm or less; and the percentage of open area Ha for region a, the percentage of open area Hb for region b, and the percentage of open area Hc for region c satisfy the following equations.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: October 13, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Gohei Yamamura, Koichi Takada, Hiroki Tomioka
  • 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
  • Publication number: 20200197880
    Abstract: A problem to be solved by the present invention is to provide a separation membrane having excellent separation performance, having high membrane strength and high permeation performance, and mainly including a cellulose-based resin. The present invention is concerned with a separation membrane including a cellulose ester, having, in the interior thereof, voids each having a specified structure, and having a tensile elasticity of 1,000 to 6,500 MPa.
    Type: Application
    Filed: March 5, 2020
    Publication date: June 25, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Koichi TAKADA, Gohei YAMAMURA, Ryuichiro HIRANABE, Hiroki TOMIOKA
  • Patent number: 10639595
    Abstract: A problem to be solved by the present invention is to provide a separation membrane having excellent separation performance, having high membrane strength and high permeation performance, and mainly including a cellulose-based resin. The present invention is concerned with a separation membrane including a cellulose ester, having, in the interior thereof, voids each having a specified structure, and having a tensile elasticity of 1,000 to 6,500 MPa.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: May 5, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Koichi Takada, Gohei Yamamura, Ryuichiro Hiranabe, Hiroki Tomioka
  • Publication number: 20200061545
    Abstract: The present invention addresses the problem of providing: a composite hollow-fiber membrane having high permeability and high membrane strength; and a production method therefor. The present invention pertains to a composite hollow-fiber membrane that at least has a layer (A) and a layer (B), wherein the layer (A) contains a thermoplastic resin, the layer (A) is provided with a co-continuous structure comprising voids and a phase containing the thermoplastic resin, the co-continuous structure has a structural cycle of 1-1000 nm, and the hole area rate HA of the layer (A) and the hole area rate HB of the layer (B) fulfill the relation: HA<HB.
    Type: Application
    Filed: February 27, 2018
    Publication date: February 27, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Koichi TAKADA, Gohei YAMAMURA, Hiroki EIMURA
  • Publication number: 20200038814
    Abstract: The present invention addresses the problem of providing a separating membrane mainly comprising a thermoplastic resin having high permeability. The present invention relates to a separating membrane including a thermoplastic resin, wherein the width of voids in the separating membrane is at least equal to 1 nm and at most equal to 1000 nm, and the curvature rate of the voids is at least equal to 1.0 and at most equal to 6.0.
    Type: Application
    Filed: March 30, 2018
    Publication date: February 6, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Koichi TAKADA, Gohei YAMAMURA, Hiroki EIMURA
  • Publication number: 20200023321
    Abstract: The purpose of the present invention is to provide: a separation film that consists primarily of a cellulose ester and has a high membrane strength and a high elongation degree; and a production method therefor. Provided is a separation film which has a structure comprising a cellulose ester phase and pores, wherein the average pore diameter R is 0.001-6 ?m, the value obtained from the expression: breaking strength (MPa)÷(100?porosity (%))×100 is 40 or greater, and the elongation degree is 10% or greater.
    Type: Application
    Filed: March 30, 2018
    Publication date: January 23, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hiroki EIMURA, Gohei YAMAMURA, Koichi TAKADA
  • Patent number: 10478782
    Abstract: Problems that the invention is to solve is to provide a composite hollow fiber membrane being excellent in separation performance and permeation performance, having high membrane strength, and capable of being easily produced, and a method for producing the same. The present invention relates to a composite hollow fiber membrane including at least a layer (A) and a layer (B), in which the composite hollow fiber membrane has an outer diameter of 20 to 350 ?m and an inner diameter of 14 to 250 ?m, the tensile modulus of the composite hollow fiber membrane is from 1,000 to 6,500 MPa, the layer (A) contains a cellulose ester, the thickness of the layer (A) is from 0.01 to 5 ?m, and the open pore ratio HA of the layer (A) and the open pore ratio HB of the layer (B) satisfy HA<HB.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: November 19, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Gohei Yamamura, Koichi Takada, Ryuichiro Hiranabe, Hiroki Tomioka
  • Publication number: 20190046931
    Abstract: The problem addressed by the present invention is to provide a separation membrane with superior permeation performance and separation performance and having few occurrences of defects. The present invention relates to a separation membrane wherein: the separation membrane has a layer (I) with a thickness of 0.5-100 ?m; letting, in a cross-section in the direction of thickness of the layer (I), region a be a region with a depth of 50-150 nm from a surface (surface A), region b a region with a depth of 50-150 nm from the other surface (surface B), and region c a region with a thickness of 100 nm where the depth from both surfaces is the same, the average pore diameter Pa for region a and the average pore diameter Pb for region b are both 0.3-3.0 nm and the average pore diameter Pc for region c is 3.0 nm or less; and the percentage of open area Ha for region a, the percentage of open area Hb for region b, and the percentage of open area Hc for region c satisfy the following equations.
    Type: Application
    Filed: January 27, 2017
    Publication date: February 14, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Gohei YAMAMURA, Koichi TAKADA, Hiroki TOMIOKA
  • 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
  • Publication number: 20180117537
    Abstract: Problems that the invention is to solve is to provide a composite hollow fiber membrane being excellent in separation performance and permeation performance, having high membrane strength, and capable of being easily produced, and a method for producing the same. The present invention relates to a composite hollow fiber membrane including at least a layer (A) and a layer (B), in which the composite hollow fiber membrane has an outer diameter of 20 to 350 ?m and an inner diameter of 14 to 250 ?m, the tensile modulus of the composite hollow fiber membrane is from 1,000 to 6,500 MPa, the layer (A) contains a cellulose ester, the thickness of the layer (A) is from 0.01 to 5 ?m, and the open pore ratio HA of the layer (A) and the open pore ratio HB of the layer (B) satisfy HA<HB.
    Type: Application
    Filed: April 28, 2016
    Publication date: May 3, 2018
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Gohei YAMAMURA, Koichi TAKADA, Ryuichiro HIRANABE, Hiroki TOMIOKA
  • Publication number: 20180065093
    Abstract: A problem to be solved by the present invention is to provide a separation membrane having excellent separation performance, having high membrane strength and high permeation performance, and mainly including a cellulose-based resin. The present invention is concerned with a separation membrane including a cellulose ester, having, in the interior thereof, voids each having a specified structure, and having a tensile elasticity of 1,000 to 6,500 MPa.
    Type: Application
    Filed: March 31, 2016
    Publication date: March 8, 2018
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Koichi TAKADA, Gohei YAMAMURA, Ryuichiro HIRANABE, Hiroki TOMIOKA
  • Patent number: 9859569
    Abstract: Provided is a method for manufacturing a film-wrapped electrical device, including: a first injection step of depressurizing, to a given pressure lower than atmospheric pressure, the inside of an injection chamber (2) in which a bag-shaped laminate film wrapping member (29) is placed, the laminate film wrapping member (29) having an opening portion (29a) and housing an electrode assembly (21?) including a positive electrode and a negative electrode stacked with a separator therebetween, and injecting part of a predetermined injection amount of an electrolyte solution (20) into the wrapping member (29) through the opening portion (29a); and a second injection step of, after the first injection step, pressurizing the inside of the injection chamber (2) to a pressure higher than the given pressure and injecting the rest of the predetermined injection amount of the electrolyte solution (20).
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: January 2, 2018
    Assignees: NISSAN MOTOR CO., LTD., AUTOMOTIVE ENERGY SUPPLY CORPORATION
    Inventors: Koichi Takada, Yuta Motohashi
  • Publication number: 20170296984
    Abstract: The present invention provides a separation membrane having excellent separation performance and permeation performance, having high membrane strength, and mainly including a cellulose-based resin. The present invention relates to a separation membrane containing a cellulose ester and having a tensile elasticity of 1,500 to 6,500 MPa.
    Type: Application
    Filed: September 30, 2015
    Publication date: October 19, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Gohei Yamamura, Koichi Takada, Ryuichiro Hiranabe, Hiroki Tomioka
  • Publication number: 20160310907
    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: Application
    Filed: November 27, 2014
    Publication date: October 27, 2016
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Masayuki HANAKAWA, Koichi TAKADA, Takahiro TOKUYAMA, Kenta IWAI
  • Patent number: 9065131
    Abstract: A battery case is disposed in a decompression chamber. An electrolyte in an aeration tank is injected into the battery case in the decompression chamber using a liquid injection nozzle. By exposing the electrolyte to an ambient pressure in the decompression chamber within the aeration tank before supplying the electrolyte to the liquid injection nozzle, a pressure of the electrolyte is regulated to a pressure in the decompression chamber, and gas molecules in the electrolyte are separated therefrom. By providing the aeration tank, an efficiency with which the gas molecules are separated from the electrolyte is improved, and as a result, the electrolyte is injected into the battery case smoothly.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: June 23, 2015
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Koichi Takada
  • Publication number: 20140373344
    Abstract: Provided is a method for manufacturing a film-wrapped electrical device, including: a first injection step of depressurizing, to a given pressure lower than atmospheric pressure, the inside of an injection chamber (2) in which a bag-shaped laminate film wrapping member (29) is placed, the laminate film wrapping member (29) having an opening portion (29a) and housing an electrode assembly (21?) including a positive electrode and a negative electrode stacked with a separator therebetween, and injecting part of a predetermined injection amount of an electrolyte solution (20) into the wrapping member (29) through the opening portion (29a); and a second injection step of, after the first injection step, pressurizing the inside of the injection chamber (2) to a pressure higher than the given pressure and injecting the rest of the predetermined injection amount of the electrolyte solution (20).
    Type: Application
    Filed: February 7, 2013
    Publication date: December 25, 2014
    Applicants: NISSAN MOTOR CO., LTD., AUTOMOTIVE ENERGY SUPPLY CORPORATION
    Inventors: Koichi Takada, Yuta Motohashi
  • Publication number: 20130029186
    Abstract: A battery case is disposed in a decompression chamber. An electrolyte in an aeration tank is injected into the battery case in the decompression chamber using a liquid injection nozzle. By exposing the electrolyte to an ambient pressure in the decompression chamber within the aeration tank before supplying the electrolyte to the liquid injection nozzle, a pressure of the electrolyte is regulated to a pressure in the decompression chamber, and gas molecules in the electrolyte are separated therefrom. By providing the aeration tank, an efficiency with which the gas molecules are separated from the electrolyte is improved, and as a result, the electrolyte is injected into the battery case smoothly.
    Type: Application
    Filed: April 7, 2011
    Publication date: January 31, 2013
    Inventor: Koichi Takada