Patents by Inventor Shuhei Yorimitsu

Shuhei Yorimitsu 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: 11884788
    Abstract: Provided are reinforcing fibers using an adhesive component not containing resorcinol and formaldehyde, which are excellent in adhesiveness to rubber and which can be efficiently produced while preventing contamination of production facilities, and a method for producing them, as well as a molded article using them. The reinforcing fibers have an adhesive component that contains a conjugated diene rubber and an oil, in at least a part of the surfaces thereof, wherein the vapor pressure at 20° C. of the oil is 10 Pa or less.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: January 30, 2024
    Assignee: KURARAY CO., LTD.
    Inventors: Toru Asada, Daisuke Koda, Shuhei Yorimitsu, Shinichi Takemoto, Hiroyuki Kawai
  • Publication number: 20230332350
    Abstract: Provided is a double braid rope structure which is provided with an inner core and an outer cover. In the double braid rope structure (10), the inner core (3) includes high strength and high modulus fibers with a yarn tenacity of 20 cN/dtex or higher and a yarn elastic modulus of 400 cN/dtex or higher, and has a ratio of yarn length/rope length of 1.005 or more and 1.200 or less, the rope length being determined as a length of a cut section (V) cut to a certain length from the rope structure (10), and the yarn length being determined as an average value of lengths of yarns constituting the inner core of the cut section (V).
    Type: Application
    Filed: June 22, 2023
    Publication date: October 19, 2023
    Applicant: KURARAY CO., LTD.
    Inventors: Kazumasa KUSUDO, Satoshi Katsuya, Yoshifumi Aso, Shuhei Yorimitsu
  • Publication number: 20230075020
    Abstract: To provide a waterproof sheet for civil engineering, having sufficient strength and elongation even at a low temperature of about ?10° C. and having excellent adhesiveness to a structure such as a tunnel. Disclosed is a waterproof sheet for civil engineering, which has a layer (A) including a composition containing an ethylene-vinyl acetate copolymer (a1) and a thermoplastic resin (a2) other than the ethylene-vinyl acetate copolymer (a1), and a silica-containing layer containing silica, wherein the content of the ethylene-vinyl acetate copolymer (a1) in the composition is 30 to 95% by mass, the content of the thermoplastic resin (a2) is 5 to 70% by mass, and the absolute value of the difference between the SP value of the ethylene-vinyl acetate copolymer (a1) and the SP value of the thermoplastic resin (a2) is less than 0.70 (cal/cm3)1/2.
    Type: Application
    Filed: February 4, 2021
    Publication date: March 9, 2023
    Applicant: KURARAY CO., LTD
    Inventors: Kazumasa KUSUDO, Hiroyuki KAWAI, Takashi KATAYAMA, Shuhei YORIMITSU, Noriko KAWASHIMA, Daisuke KONISHI, Naoyuki YAGUCHI, Kenichi KOJIMA
  • Publication number: 20220306822
    Abstract: To provide surface-modified fibers and reinforcing fibers that are capable of enhancing the adhesiveness to rubber, without the use of resorcinol and formaldehyde, and a molded article using the same. Surface-modified fibers include fibers, and a surface-modifying layer covering at least a part of a surface of the fibers, and have a solid surface zeta potential on a surface of the surface-modifying layer of ?20.0 to 30.0 mV.
    Type: Application
    Filed: November 10, 2020
    Publication date: September 29, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Eiichi ISHIDA, Daisuke KODA, Toru ASADA, Shinichi TAKEMOTO, Shuhei YORIMITSU, Hiroyuki KAWAI
  • Publication number: 20220055408
    Abstract: A bicycle-tire reinforcing ply comprising a woven fabric that comprises liquid crystalline polyester fiber yarns, wherein each of the fiber yarns comprises three or more single fibers having an average fiber diameter of 25 ?m or larger, and the fiber yarns satisfies the following formula: [No. of single fibers per fiber yarn]×[average fiber diameter (?m)]?1700.
    Type: Application
    Filed: November 8, 2021
    Publication date: February 24, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Shinichi Takemoto, Shuhei Yorimitsu, Ushio Suzuki, Takuji Nakamura
  • Publication number: 20220049062
    Abstract: Provided are reinforcing fibers using an adhesive component not containing resorcinol and formaldehyde, which are excellent in adhesiveness to rubber and which can be efficiently produced while preventing contamination of production facilities, and a method for producing them, as well as a molded article using them. The reinforcing fibers have an adhesive component that contains a conjugated diene rubber and an oil, in at least a part of the surfaces thereof, wherein the vapor pressure at 20° C. of the oil is 10 Pa or less.
    Type: Application
    Filed: February 21, 2020
    Publication date: February 17, 2022
    Applicant: KURARAY CO., LTD.
    Inventors: Toru ASADA, Daisuke KODA, Shuhei YORIMITSU, Shinichi TAKEMOTO, Hiroyuki KAWAI
  • Publication number: 20210222036
    Abstract: Reinforcing fibers containing hydrophilic fibers and an adhesive component, wherein at least a part of the surfaces of the hydrophilic fibers have the adhesive component, the adhesive component contains a modified conjugated diene rubber having a hydrogen-bonding functional group in a part of the conjugated diene rubber, and the number of the hydrogen-bonding functional groups in the modified conjugated diene rubber is 2 to 150 per molecule on average; a method for producing the reinforcing fibers; and a molded article using the reinforcing fibers.
    Type: Application
    Filed: May 28, 2019
    Publication date: July 22, 2021
    Applicant: KURARAY CO., LTD.
    Inventors: Toru ASADA, Daisuke KODA, Shinichi TAKEMOTO, Hiroyuki KAWAI, Shuhei YORIMITSU
  • Patent number: 7951452
    Abstract: The suede artificial leather of the present invention comprises a three-dimensional entangled body comprising a superfine fiber having a fineness of 0.2 dtex or less and an elastomeric polymer A, and satisfies the requirements (1) to (4) as specified in the specification. By meeting the requirements, the suede artificial leather acquires excellent color fastness to light and color development in a wide range of colors and a high quality with good suede feeling, surface touch, hand, mechanical properties and color fastness.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: May 31, 2011
    Assignee: KURARAY Co., Ltd.
    Inventors: Kimio Nakayama, Tsuyoshi Yamasaki, Nobuo Takaoka, Mitsuru Kato, Shuhei Yorimitsu
  • Publication number: 20050118394
    Abstract: The artificial leather sheet substrates of the invention comprise a united laminate structure of a nonwoven fabric layer A and a knitted or woven fabric layer B and an elastic polymer C impregnated into the united laminate structure. The nonwoven fabric layer A and the knitted or woven fabric layer B are strongly bonded to each other by entanglement. A portion of the microfine fibers constituting the knitted or woven fabric layer B are exposed to the outer surface of the nonwoven fabric layer A. Therefore, the artificial leather sheet substrates exhibit excellent mechanical properties such as resistance to tear stress. Having a high density as compared with conventional artificial leathers, the artificial leather sheet substrates have feel and densified feel similar to those of natural leathers.
    Type: Application
    Filed: November 10, 2004
    Publication date: June 2, 2005
    Applicant: Kuraray Co., Ltd.
    Inventors: Kazuhiko Tanaka, Tsuyoshi Yamasaki, Hitoshi Nakatsuka, Masasi Meguro, Nobuhiro Koga, Masao Kawamoto, Kimio Nakayama, Shuhei Yorimitsu
  • Publication number: 20040063366
    Abstract: The suede artificial leather of the present invention comprises a three-dimensional entangled body comprising a superfine fiber having a fineness of 0.2 dtex or less and an elastomeric polymer A, and satisfies the requirements (1) to (4) as specified in the specification. By meeting the requirements, the suede artificial leather acquires excellent color fastness to light and color development in a wide range of colors and a high quality with good suede feeling, surface touch, hand, mechanical properties and color fastness.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 1, 2004
    Applicant: Kuraray Co., Ltd.,
    Inventors: Kimio Nakayama, Tsuyoshi Yamasaki, Nobuo Takaoka, Mitsuru Kato, Shuhei Yorimitsu
  • Patent number: 6537660
    Abstract: The present invention relates to a fiber, which includes: 2 to 95% by weight, based on the total weight of the fiber, of at least one block copolymer, which includes: at least one polymer block (A) that includes 50 to 100% by weight of olefinic monomer units, based on the total weight of the block copolymer; and at least one polymer block (B) that includes 0.1 to 100% by weight of (meth)acrylic monomer units, based on the total weight of the block copolymer. Other embodiments of the invention include fibrous structures, non-woven fabrics, leather-like sheet materials, and dyed articles, which include the above-described fiber, and processes of making the above-described fiber. The present invention also relates to a composite fiber, and fibrous structures, non-woven fabrics, leather-like sheet materials, and dyed articles, which includes the above-described composite fiber, as well as processes for producing the above-described composite fiber.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: March 25, 2003
    Assignee: Kuraray Co., Ltd.
    Inventors: Takashi Katayama, Kazuhiko Maekawa, Hitoshi Nakatsuka, Ichirou Inoue, Shuhei Yorimitsu
  • Publication number: 20020009938
    Abstract: The present invention relates to a fiber, which includes:
    Type: Application
    Filed: March 14, 2001
    Publication date: January 24, 2002
    Applicant: Kuraray Co., Ltd.
    Inventors: Takashi Katayama, Kazuhiko Maekawa, Hitoshi Nakatsuka, Ichirou Inoue, Shuhei Yorimitsu