Patents by Inventor Ryuichiro Hiranabe

Ryuichiro Hiranabe 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
  • Publication number: 20200261886
    Abstract: Provided is a filter having either or both of a winding and a laminate that include a fiber-like absorbing material, wherein the fiber-like absorbing material has a base material and metal particles supported on the base material, and the diameter D of the fiber-like absorbing material, the void fraction of the winding or laminate, and the variation in the area void fraction in the radial direction of the winding or the variation in the area void fraction in the direction of lamination are in a specific range.
    Type: Application
    Filed: August 31, 2018
    Publication date: August 20, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Ryoma MIYAMOTO, Gohei YAMAMURA, Yoichiro KOZAKI, Ryuichiro HIRANABE, Satoko KANAMORI
  • 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: 10662083
    Abstract: The present invention provides a filter which, even when raw water is subjected to high-speed treatment, enables achieving a high solute rejection ratio and a long solute filtration life and which exhibits a low water flow resistance. The present invention pertains to a filter obtained by laminating woven fabrics or knitted fabrics, the filter being characterized in that: said woven fabrics or knitted fabrics comprise a fiber capable of adsorbing components dissolved in liquid: said fiber has a diameter of 100-600 ?m; the woven fabrics or knitted fabrics have a porosity of 15-70%; and variation in area porosity in the thickness direction of the laminate is 15% or less.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: May 26, 2020
    Assignee: TORAY INDUSTRIES
    Inventors: Ryoma Miyamoto, Keisuke Yoneda, Kumiko Ogawa, Satoko Kanamori, Ryuichiro Hiranabe, Yoichiro Kozaki
  • 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: 20200062616
    Abstract: The present invention provides a filter which, even when raw water is subjected to high-speed treatment, enables achieving a high solute rejection ratio and a long solute filtration life and which exhibits a low water flow resistance. The present invention pertains to a filter obtained by laminating woven fabrics or knitted fabrics, the filter being characterized in that: said woven fabrics or knitted fabrics comprise a fiber capable of adsorbing components dissolved in liquid: said fiber has a diameter of 100-600 ?m; the woven fabrics or knitted fabrics have a porosity of 15-70%; and variation in area porosity in the thickness direction of the laminate is 15% or less.
    Type: Application
    Filed: February 28, 2018
    Publication date: February 27, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Ryoma MIYAMOTO, Keisuke YONEDA, Kumiko OGAWA, Satoko KANAMORI, Ryuichiro HIRANABE, Yoichiro KOZAKI
  • 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: 20190217286
    Abstract: The present invention relates to an ion exchange fiber including: a core fiber; and an ion exchange layer that is disposed at a vicinity of the core fiber and includes a crosslinked polymer compound having an ion exchange group, in which, in a cross section perpendicular to a longitudinal direction of the ion exchange fiber, an area of the ion exchange layer occupies 50% or more and 90% or less of a total cross sectional area, and the ion exchange fiber has a swelling ratio of 50% or less.
    Type: Application
    Filed: August 29, 2017
    Publication date: July 18, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Ryoma MIYAMOTO, Keisuke YONEDA, Ryuichiro HIRANABE, Satoko KANAMORI, Keiji TAKEDA, Noriko NAGAI, Naoki ASAI
  • 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: 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
  • 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
  • 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
  • Patent number: 9381472
    Abstract: A carbon dioxide separation membrane includes a skin layer having a function of separating carbon dioxide from a mixed gas, wherein the skin layer contains 30 to 90% by mass of a polymer resin in which a difference between an affinity to carbon dioxide and an affinity to at least one of hydrogen and helium, the affinities are expressed as free energy ?G (kcal mol?1), is 4.5 kcal mol?1 or more and less than 10 kcal mol?1, and from 10 to 70% by mass of an organic liquid having an affinity to carbon dioxide.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: July 5, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Ryuichiro Hiranabe, Masayuki Hanakawa, Tomonori Kawakami
  • Publication number: 20150165390
    Abstract: A carbon dioxide separation membrane includes a skin layer having a function of separating carbon dioxide from a mixed gas, wherein the skin layer contains 30 to 90% by mass of a polymer resin in which a difference between an affinity to carbon dioxide and an affinity to at least one of hydrogen and helium, the affinities are expressed as free energy ?G (kcal mol?1), is 4.5 kcal mol?1 or more and less than 10 kcal mol?1, and from 10 to 70% by mass of an organic liquid having an affinity to carbon dioxide.
    Type: Application
    Filed: May 30, 2013
    Publication date: June 18, 2015
    Inventors: Ryuichiro Hiranabe, Masayuki Hanakawa, Tomonori Kawakami