Patents by Inventor Hiroo Katsuta

Hiroo Katsuta 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: 20230323572
    Abstract: A conductive fiber includes a metal layer on a fiber surface, having an average number of crimps of 2 crimps/cm or more, a volume resistivity of 2×10?6 ?·cm to 1×10?2 ?·cm, and a total fineness of 10 dtex to 1000 dtex, and having an average single-fiber diameter of 5 ?m to 20 ?m.
    Type: Application
    Filed: July 16, 2021
    Publication date: October 12, 2023
    Inventors: Hiroo Katsuta, Masafumi Sudo, Shingo Takechi, Hidekazu Kano
  • Publication number: 20220408856
    Abstract: To provide a garment which can suppress stuffy feeling and heatful feeling in the garment to keep an environment in the garment comfortable and also has excellent wearing comfort and design so that it can be suitably used in a high temperature and/or high humidity environment and in various wearing scenes requiring comfort such as an office, a home and the like, it is provided that the garment made of a fabric having an air permeability of 50 to 500 cm3/cm2/s includes a blower fan unit and a path forming section for imparting directivity to wind in the garment inside the garment.
    Type: Application
    Filed: August 5, 2020
    Publication date: December 29, 2022
    Inventors: Hiroo Katsuta, Kirita Sato, Hidekazu Kano, Hidetoshi Suzuki, Kazuya Fujita
  • Publication number: 20220273053
    Abstract: A garment has excellent contact cold sensation and gives persistent contact cold sensation but also can reduce heatful feeling and is suitably wearable in wearing scenes such as offices and homes. The garment includes one or plural fans for taking external air into a space between the garment and the body. A fabric of the garment has a contact cold/warm sensation value Q-max of 0.30 W/cm2 or larger and a basis weight of 250 g/m2 or less.
    Type: Application
    Filed: July 3, 2020
    Publication date: September 1, 2022
    Inventors: Kirita Sato, Hiroo Katsuta, Hidekazu Kano
  • Publication number: 20220225694
    Abstract: A fan unit for an air-conditioned garment, wherein the fan unit takes external air into an interspace between the garment and a wearer's body, the fan unit including: a fan that blows external air into the interior of the garment; a motor that rotates the fan; a battery that supplies power to the motor; a charging terminal for charging the battery; and a power switch to start and stop the fan unit, wherein the fan, the motor and the battery are housed in a casing, the casing has an air intake port that takes in external air, and an air blowing port that blows the taken-in external air into the interior of the garment, the charging terminal and the power switch are provided on the exterior of the casing, and the casing has a thickness of 5 to 30 mm in an axial direction of the fan.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 21, 2022
    Inventors: Hiroo Katsuta, Kirita Sato, Hidekazu Kano, Hidetoshi Suzuki, Kazuya Fujita
  • Publication number: 20220049380
    Abstract: In order to provide a copolymerized polyphenylene sulfide fiber that is thin, has a low heat shrinkage rate, and is suitable for a use as a paper-making binder having excellent weldability, a copolymerized polyphenylene sulfide fiber is characterized by containing a copolymerized polyphenylene sulfide that has a p-phenylene sulfide unit as a main component and contains 3 mol % or more and 40 mol % or less of a m-phenylene sulfide unit in a repeating unit, and having a degree of crystallization of 10.0% or more and 30.0% or less, an average fiber diameter of 5 ?m or more and 25 ?m or less, and further a shrinkage rate in 98° C. hot water of 25.0% or less.
    Type: Application
    Filed: September 19, 2019
    Publication date: February 17, 2022
    Applicant: TORAY Industries, Inc.
    Inventors: Shohei TSUCHIYA, Hiroo KATSUTA, Yoshitsugu FUNATSU
  • Publication number: 20210040660
    Abstract: The present invention relates to a spun-bonded nonwoven fabric including a monocomponent fiber including a copolymerized polyester based resin in which 5 weight % or higher and 40 weight % or lower of a polyethylene glycol is copolymerized with a polyester based resin, in which the spun-bonded nonwoven fabric has a ?MR of 0.5% or higher and 15% or lower.
    Type: Application
    Filed: January 23, 2019
    Publication date: February 11, 2021
    Applicant: Toray Industries, Inc.
    Inventors: Yuka Nishiguchi, Hiroo Katsuta, Yoshitsugu Funatsu, Yoshitaka Aranishi, Kentaro Kajiwara
  • Publication number: 20200240061
    Abstract: Provided is a spunbond nonwoven fabric which is made of a polypropylene fiber and satisfies all of the following conditions A to E: A. the average single fiber diameter of the fiber is 6-17 ?m; B. the degree of crystal orientation of the fiber as obtained by wide-angle X-ray diffraction is at least 0.91; C. the crystallite size of the (110) plane of the fiber as obtained by wide angle X-ray diffraction is at least 12 nm; D. the average orientation parameter of the fiber as obtained by Raman spectroscopy is at least 8.0; and E. the complex viscosity of the spunbond nonwoven fabric at a temperature of 230° C. is 20-100 Pa·sec at an angular frequency of 6.3 rad/sec.
    Type: Application
    Filed: September 27, 2018
    Publication date: July 30, 2020
    Applicant: Toray Industries, Inc.
    Inventors: Hiroo Katsuta, Yoshitsugu Funatsu, Masanori Endo
  • Patent number: 10584429
    Abstract: A method of producing a liquid crystalline polyester fiber includes subjecting a yarn prepared by melt spinning a liquid crystalline polyester to a solid-phase polymerization after applying inorganic particles (A) and a phosphate-based compound (B) to the yarn. The method can optionally include cleaning the liquid crystalline polyester fiber after the solid-phase polymerization.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: March 10, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Chieko Kawamata, Yusuke Ono, Hiroo Katsuta, Yoshitsugu Funatsu
  • 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
  • Publication number: 20180305841
    Abstract: A method of producing a liquid crystalline polyester fiber includes subjecting a yarn prepared by melt spinning a liquid crystalline polyester to a solid-phase polymerization after applying inorganic particles (A) and a phosphate-based compound (B) to the yarn. The method can optionally include cleaning the liquid crystalline polyester fiber after the solid-phase polymerization.
    Type: Application
    Filed: June 25, 2018
    Publication date: October 25, 2018
    Inventors: Chieko Kawamata, Yusuke Ono, Hiroo Katsuta, Yoshitsugu Funatsu
  • Patent number: 10106655
    Abstract: A poly(phenylene sulfide) fiber changes little in fiber structure and has excellent long-term heat resistance. Namely, the poly(phenylene sulfide) fiber has a degree of crystallization of 45.0% or higher, a content of movable amorphous components of 15.0% or less, and a weight-average molecular weight of 300,000 or less.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: October 23, 2018
    Assignee: Toray Industries, Inc.
    Inventors: Hiroo Katsuta, Reo Mitsunaga, Daisuke Yamamoto, Shunsuke Horiuchi, Yoshitsugu Funatsu
  • Publication number: 20170226292
    Abstract: A poly(phenylene sulfide) fiber changes little in fiber structure and has excellent long-term heat resistance. Namely, the poly(phenylene sulfide) fiber has a degree of crystallization of 45.0% or higher, a content of movable amorphous components of 15.0% or less, and a weight-average molecular weight of 300,000 or less.
    Type: Application
    Filed: September 24, 2015
    Publication date: August 10, 2017
    Inventors: Hiroo Katsuta, Reo Mitsunaga, Daisuke Yamamoto, Shunsuke Horiuchi, Yoshitsugu Funatsu
  • Publication number: 20170198414
    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: Application
    Filed: May 22, 2015
    Publication date: July 13, 2017
    Inventors: Hiroo Katsuta, Takaaki Mihara, Daisuke Yamamoto, Shunsuke Horiuchi, Yoshitsugu Funatsu
  • Patent number: 9169578
    Abstract: A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15° C. or above as observed in differential calorimetry under heating from 50° C. at a temperature elevation rate of 20° C./min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 27, 2015
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Yoshitsugu Funatsu, Hiroo Katsuta, Yuhei Maeda
  • Patent number: 9011743
    Abstract: Disclosed are liquid crystal polyester fibers, which have a peak half-width of 15° C. or greater at an endothermic peak (Tm1) observed by differential calorimetry under a temperature elevation of 20° C./minute from 50° C., polystyrene equivalent weight average molecular weight of 250,000 or more and 2,000,000 or less, and a variable waveform of less than 10% in terms of the half inert diagram mass waveform determined by a Uster yarn irregularity tester. Also disclosed is a method for producing liquid crystal polyester fibers, wherein liquid crystal polyester fibers are formed into a package, the fibers are then subjected to solid-phase polymerization, and the solid-phase polymerized liquid crystal polyester fibers are unrolled from the package and successively heat treated without being once taken up. The heat treatment temperature is controlled at a temperature of the endothermic peak temperature (Tm1) of the solid-phase polymerized liquid crystal polyester fibers+60° C.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: April 21, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Yoshitsugu Funatsu, Yuhei Maeda, Norio Suzuki, Hiroo Katsuta
  • Publication number: 20140106169
    Abstract: A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15° C. or above as observed in differential calorimetry under heating from 50° C. at a temperature elevation rate of 20° C./min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yoshitsugu FUNATSU, Hiroo KATSUTA, Yuhei MAEDA
  • Patent number: 8673174
    Abstract: A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15° C. or above as observed in differential calorimetry under heating from 50° C. at a temperature elevation rate of 20° C./min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: March 18, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Yoshitsugu Funatsu, Hiroo Katsuta, Yuhei Maeda
  • Publication number: 20140017965
    Abstract: Provided are liquid crystal polyester fibers having a running tension variable width (R) of 5 cN or less and an oil component deposition rate of 3.0 wt % or less. Also provided is a method for producing liquid crystal polyester fibers whereby solid-phase polymerization is performed after applying inorganic particles (A) and phosphoric acid compound (B) to yarn obtained by melt spinning of liquid crystal polyester. Further provided is a mesh textile formed from the liquid crystal polyester fibers. By means of the liquid crystal polyester fibers, method for producing the same, and mesh textile, step transition and product yield during the weaving steps are excellent in that there is little scum and there is little variation of the running tension during the weaving steps.
    Type: Application
    Filed: March 12, 2012
    Publication date: January 16, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Chieko Kawamata, Yusuki Ono, Hiroo Katsuta, Yoshitsugu Funatsu
  • Publication number: 20110318982
    Abstract: Disclosed are liquid crystal polyester fibers, which have a peak half-width of 15° C. or greater at an endothermic peak (Tm1) observed by differential calorimetry under a temperature elevation of 20° C./minute from 50° C., polystyrene equivalent weight average molecular weight of 250,000 or more and 2,000,000 or less, and a variable waveform of less than 10% in terms of the half inert diagram mass waveform determined by a Uster yarn irregularity tester. Also disclosed is a method for producing liquid crystal polyester fibers, wherein liquid crystal polyester fibers are formed into a package, the fibers are then subjected to solid-phase polymerization, and the solid-phase polymerized liquid crystal polyester fibers are unrolled from the package and successively heat treated without being once taken up. The heat treatment temperature is controlled at a temperature of the endothermic peak temperature (Tm1) of the solid-phase polymerized liquid crystal polyester fibers+60° C.
    Type: Application
    Filed: March 4, 2010
    Publication date: December 29, 2011
    Inventors: Yoshitsugu Funatsu, Yuhei Maeda, Norio Suzuki, Hiroo Katsuta
  • Publication number: 20100104870
    Abstract: A liquid crystalline polyester fiber which exhibits a half width of endothermic peak (Tm1) of 15° C. or above as observed in differential calorimetry under heating from 50° C. at a temperature elevation rate of 20° C./min and a strength of 12.0 cN/dtex or more; and a process for production of the same. A liquid crystalline polyester fiber which is excellent in abrasion resistance and lengthwise uniformity and is improved in weavability and quality of fabric and which is characterized by a small single-fiber fineness can be efficiently produced without impairing the characteristics inherent in fabric made of liquid crystalline polyester fiber produced by solid phase polymerization, namely, high strength, high elastic modulus and excellent thermal resistance.
    Type: Application
    Filed: February 27, 2008
    Publication date: April 29, 2010
    Inventors: Yoshitsugu Funatsu, Hiroo Katsuta, Yuhei Maeda