Patents by Inventor Takaaki Mihara

Takaaki Mihara 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: 11000812
    Abstract: The present invention provides a carbon membrane for fluid separation that can suppress the breakage of a carbon membrane installed in a separation module during a vacuum desorption step before permeation of a fluid or during permeation of a fluid. The present invention provides a carbon membrane for fluid separation including a porous carbon support and a dense carbon layer provided on the porous carbon support, wherein the porous carbon support has an Rs value of 1.0 or less, where the Rs value is an R value (peak intensity of D-band (1360 cm?1)/peak intensity of G-band (1580 cm?1)) calculated from a Raman spectrum.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: May 11, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Kosaku Takeuchi, Dai Kondo, Takaaki Mihara, Tomoyuki Horiguchi
  • Patent number: 10994243
    Abstract: A carbon membrane for fluid separation, i.e., a fiber-form carbon membrane for fluid separation, has protrusions having a height difference of at least 1 ?m formed on the fiber surface. In the carbon membrane for fluid separation, adhesion between membranes is inhibited and clogging tends not to occur when a gas mixture containing water vapor is separated. A carbon membrane module for fluid separation that includes the fibrous carbon membrane for fluid separation is also disclosed.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: May 4, 2021
    Inventors: Masahiro Kitabata, Kosaku Takeuchi, Takaaki Mihara, Tomoyuki Horiguchi
  • Publication number: 20200391161
    Abstract: The present invention provides a fluid separation membrane that can maintain separation performance for a long period of time. The present invention provides a fluid separation membrane including a separation layer including a dense layer, wherein 2 to 10,000 ppm of a total of a monocyclic or bicyclic aromatic compound being liquid or solid at 16° C. under atmospheric pressure and 10 to 250,000 ppm of water are adsorbed.
    Type: Application
    Filed: February 19, 2019
    Publication date: December 17, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Kentaro TANAKA, Yuki YAMASHITA, Dai KONDO, Kosaku TAKEUCHI, Takaaki MIHARA, Tomoyuki HORIGUCHI
  • Patent number: 10835874
    Abstract: A fluid separation membrane has high compression strength in the fiber cross-section direction (direction orthogonal to the fiber axis). The fluid separation membrane is obtained by an organic polymer layer being formed on the surface of porous carbon fibers having a co-continuous porous structure. A fluid separation membrane module and porous carbon fibers having a fully co-continuous porous structure are also disclosed.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: November 17, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Kosaku Takeuchi, Dai Kondo, Kentaro Tanaka, Takaaki Mihara, Tomoyuki Horiguchi
  • 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: 20200171441
    Abstract: The present invention provides a carbon membrane for fluid separation that can suppress the breakage of a carbon membrane installed in a separation module during a vacuum desorption step before permeation of a fluid or during permeation of a fluid. The present invention provides a carbon membrane for fluid separation including a porous carbon support and a dense carbon layer provided on the porous carbon support, wherein the porous carbon support has an Rs value of 1.0 or less, where the Rs value is an R value (peak intensity of D-band (1360 cm?1)/peak intensity of G-band (1580 cm?1)) calculated from a Raman spectrum.
    Type: Application
    Filed: July 20, 2018
    Publication date: June 4, 2020
    Applicant: Toray Industries, Inc.
    Inventors: Kosaku Takeuchi, Dai Kondo, Takaaki Mihara, Tomoyuki Horiguchi
  • Patent number: 10399856
    Abstract: The present invention relates to a particulate porous carbon material having a continuous porous structure, the particulate porous carbon material satisfying the following A to C: A: branch portions forming the continuous porous structure have an aspect ratio of 3 or higher; B: the branch portions have aggregated through joints interposed therebetween, the number of the aggregated branch portions (N) being 3 or larger; C: a ratio of the number of the aggregated branch portions (N) to the number of the joints (n), N/n, is 1.2 or larger.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: September 3, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takaaki Mihara, Kentaro Tanaka, Kosaku Takeuchi, Tomoyuki Horiguchi
  • Publication number: 20190176082
    Abstract: A carbon membrane for fluid separation, i.e., a fiber-form carbon membrane for fluid separation, has protrusions having a height difference of at least 1 ?m formed on the fiber surface. In the carbon membrane for fluid separation, adhesion between membranes is inhibited and clogging tends not to occur when a gas mixture containing water vapor is separated. A carbon membrane module for fluid separation that includes the fibrous carbon membrane for fluid separation is also disclosed.
    Type: Application
    Filed: January 17, 2017
    Publication date: June 13, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Masahiro Kitabata, Kosaku Takeuchi, Takaaki Mihara, Tomoyuki Horiguchi
  • Patent number: 10270082
    Abstract: The present invention relates to a porous carbon material having a co-continuous structure forming portion in which carbon skeletons and voids form continuous structures, respectively and which has a structural period of 0.002 ?m to 3 ?m, having pores which have an average diameter of 0.01 to 10 nm on a surface thereof, and having a BET specific surface area of 100 m2/g or more.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: April 23, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Tomoyuki Horiguchi, Kentaro Tanaka, Kosaku Takeuchi, Takaaki Mihara
  • Patent number: 10270100
    Abstract: Provided is an electrode material which has a co-continuous porous structure configured from a carbon skeleton and voids and which, by providing a large surface area, has excellent electrical conductivity, thermal conductivity, etc. This electrode material includes a porous carbon material having a co-continuous structure portion in which a carbon skeleton and voids form a continuous structure, and in the porous carbon material, the specific surface area measured by the BET method is 1 to 4500 m2/g, and the pore volume measured by the BJH method is 0.01 to 2.0 cm3/g.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 23, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Takaaki Mihara, Kentaro Tanaka, Kosaku Takeuchi, Tomoyuki Horiguchi
  • Patent number: 10249881
    Abstract: The present invention provides an electrode material for metal-air batteries which has a homogeneous co-continuous structure due to a carbon skeleton and voids and is excellent in terms of permeability to and diffusibility of ions, oxygen, electrolytes, and electrolytic solutions and which, due to the formation of the carbon network, can rapidly diffuse the heat generated by battery reactions and has satisfactory electrical conductivity. The electrode material for metal-air batteries includes a porous carbon material having a co-continuous structure portion in which a skeleton constituted of carbon and voids form a co-continuous structure and which has a structural period, as calculated by X-ray scattering method or X-ray CT method, of 0.002-10 ?m.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 2, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Takaaki Mihara, Kentaro Tanaka, Kosaku Takeuchi, Tomoyuki Horiguchi
  • Patent number: 10211000
    Abstract: The present invention provides an electrode material for an electrochemical capacitor having high surface utilization efficiency, composed of a porous carbon material capable of further contributing to higher electrostatic capacitance of the electrochemical capacitor and to development of high rate characteristics; the porous carbon material having a co-continuous structural portion in which a carbon skeleton and voids form respective continuous structures, the co-continuous structural portion having a structural period of 0.002 ?m to 20 ?m.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: February 19, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Kentaro Tanaka, Kosaku Takeuchi, Takaaki Mihara, Tomoyuki Horiguchi
  • Publication number: 20190022599
    Abstract: A fluid separation membrane has high compression strength in the fiber cross-section direction (direction orthogonal to the fiber axis). The fluid separation membrane is obtained by an organic polymer layer being formed on the surface of porous carbon fibers having a co-continuous porous structure. A fluid separation membrane module and porous carbon fibers having a fully co-continuous porous structure are also disclosed.
    Type: Application
    Filed: January 17, 2017
    Publication date: January 24, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Kosaku Takeuchi, Dai Kondo, Kentaro Tanaka, Takaaki Mihara, Tomoyuki Horiguchi
  • Patent number: 10159943
    Abstract: The present invention provides a carbon membrane for fluid separation with which a high-pressure fluid can be separated and purified and which has excellent pressure resistance and is less apt to be damaged. The present invention relates to a carbon membrane for fluid separation, including: a core layer which has a co-continuous porous structure; and a skin layer which has substantially no co-continuous porous structure and is formed around the core layer.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: December 25, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Kosaku Takeuchi, Kentaro Tanaka, Takaaki Mihara, Tomoyuki Horiguchi
  • Patent number: 10138577
    Abstract: A poly(phenylene sulfide) fiber contains 1-10% by weight of a poly(phenylene sulfide) oligomer having a weight-average molecular weight of 5,000 or less, has a difference between a cold crystallization heat quantity (?Hc) and a crystal melting heat quantity (?Hm) during temperature rising in DSC, ?Hm??Hc, of 25 J/g or larger, and has an elongation of less than 40% and a strength of 3.0 cN/dtex or higher. The poly(phenylene sulfide) fiber has high heat resistance and chemical resistance and high strength and, despite this, has excellent suitability for high-order processing, e.g., thermal shapability, because the amorphous parts thereof have high molecular movability.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: November 27, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Hiroo Katsuta, Takaaki Mihara, Daisuke Yamamoto, Shunsuke Horiuchi, Yoshitsugu Funatsu
  • Patent number: 10131770
    Abstract: A carbon material having a continuous porous structure oriented to the stretching axis is provided, which carbon material can be used as a structural material excellent in interfacial adhesion. The porous carbon material has a continuous porous structure in at least a portion thereof, in which the continuous porous structure has an orientation degree measured by a small-angle X-ray scattering method or an X-ray CT method of 1.10 or more.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: November 20, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takaaki Mihara, Kentaro Tanaka, Kosaku Takeuchi, Tomoyuki Horiguchi
  • 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: 10087076
    Abstract: Provided is a porous carbon material which has excellent electrical conductivity, thermal conductivity, pressure resistance, and strength against tension and compression. This porous carbon material at least partially includes a continuous porous structure, and exhibits excellent electrical conductivity, thermal conductivity, pressure resistance, and strength against tension and compression by containing carbon crystal grains therein.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 2, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takaaki Mihara, Kentaro Tanaka, Kosaku Takeuchi, Tomoyuki Horiguchi
  • Patent number: 10011487
    Abstract: The present invention provides: a porous carbon material which includes a portion having a continuous porous structure and a portion having no continuous porous structure and has even pore size and matrix size in the material center part thereof, thereby being easy to composite with other materials and being able to be used in various applications; a porous-carbon-material precursor; a process for producing the porous-carbon-material precursor; and a process for producing the porous carbon material. A porous carbon material of the invention is a porous carbon material which includes a portion having a continuous porous structure and a portion having substantially no continuous porous structure, in which the portion having the continuous porous structure has a structural period of 0.002 to 1 ?m.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: July 3, 2018
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takaaki Mihara, Kentaro Tanaka, Kosaku Takeuchi, Tomoyuki Horiguchi
  • Publication number: 20170323737
    Abstract: The present invention provides an electrode material for an electrochemical capacitor having high surface utilization efficiency, composed of a porous carbon material capable of further contributing to higher electrostatic capacitance of the electrochemical capacitor and to development of high rate characteristics; the porous carbon material having a co-continuous structural portion in which a carbon skeleton and voids form respective continuous structures, the co-continuous structural portion having a structural period of 0.002 ?m to 20 ?m.
    Type: Application
    Filed: September 14, 2015
    Publication date: November 9, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Kentaro Tanaka, Kosaku Takeuchi, Takaaki Mihara, Tomoyuki Horiguchi