Patents by Inventor Takuro Endo

Takuro Endo 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: 11999094
    Abstract: To provide a gas barrier biaxially oriented polyamide film and a polyamide film mill roll, even as a product that is close to an end of a mill roll, having favorable mechanical characteristics, thermal characteristics, and few S-shape curling due to moisture absorption after being made into a bag. A biaxially oriented polyamide film having at least one layer formed of a polyamide resin containing not lower than 60% by mass of poly(m-xylylene adipamide), wherein a molecular orientation angle of the film is not smaller than 20°, a strain at moisture absorption of the film is not higher than 1.3%, an impact strength of the film is not lower than 0.7 J/15 ?m, and a heat shrinkage rate, after heating for ten minutes at 160° C., of the film is 0.6 to 3.0% in both an MD direction and a TD direction.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: June 4, 2024
    Assignee: TOYOBO CO., LTD.
    Inventors: Takuro Endo, Kosuke Hama
  • Patent number: 11999849
    Abstract: To provide a biaxially oriented polyamide film, even as a product that is close to an end of a mill roll, having favorable mechanical characteristics, thermal characteristics, and few S-shape curling due to moisture absorption after being made into a bag. A biaxially oriented polyamide film formed of a polyamide resin containing not lower than 60% by mass of polyamide 6, wherein a molecular orientation angle of the film is not smaller than 20°, a strain at moisture absorption of the film is not higher than 1.3%, an impact strength of the film is not lower than 0.8 J/15 ?m, and a heat shrinkage rate, after heating for ten minutes at 160° C., of the film is 0.6 to 3.0% in both an MD direction and a TD direction.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: June 4, 2024
    Assignee: TOYOBO CO., LTD.
    Inventors: Takuro Endo, Kosuke Hama
  • Publication number: 20240165935
    Abstract: A biaxially stretched polyamide film, comprising a layer A containing 50 to 90% by mass of polyamide 6 and 10 to 50% by mass of polyamide 6 copolymer, a layer B containing 5 to 30% by mass of polyamide 6, 70 to 95% by mass of polyamide 6 copolymer and 0 to 0.10% by mass of organic lubricant, and a layer C containing 70% by mass or more of polyamide 6 and 0.05 to 1% by mass of fine particles having an average particle diameter of 0.1 to 10 ?m, wherein layer B, layer A, and layer C are formed in this order; a critical surface tension on the layer B is 27.0 mN/m or higher; and on the surface of the layer B, a dispersion component ?d of surface free energy is 27.0 mJ/m2 or higher and a hydrogen bond component ?h is 10.0 mJ/m2 or lower.
    Type: Application
    Filed: March 16, 2022
    Publication date: May 23, 2024
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Takuro ENDO
  • Patent number: 11878494
    Abstract: The objective of the present invention is to provide a gas barrier polyamide film excellent in water resistance adhesiveness (water resistant laminate strength), impact resistance and pinhole resistance. The gas barrier polyamide film is characterized in comprising a stretched polyamide film, wherein the stretched polyamide film comprises A Layer: a base layer and B Layer: an easily adhesive layer on at least one surface of the A Layer, C Layer: an inorganic thin film layer is laminated on the surface of the B Layer in the stretched polyamide film, the A Layer comprises 65 mass % or more of Polyamide 6, the B Layer comprises 60 to 100 mass % of a Polyamide 6 copolymer and 0 to 40 mass % of Polyamide 6, and a ratio of a copolymer component in the Polyamide 6 copolymer is 3 to 35 mass %.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: January 23, 2024
    Assignee: TOYOBO CO., LTD.
    Inventors: Takuro Endo, Kosuke Hama
  • Publication number: 20230340261
    Abstract: It is provided that a biaxially stretched polyamide film that has excellent resistance to pinhole formation due to bending, has excellent resistance to pinhole formation due to repeated contact, has excellent piercing resistance, and further can suppress generation of foreign matter during film formation. A biaxially stretched polyimide film comprising a functional layer (layer B) laminated on at least one surface of a base layer (layer A), wherein the base layer (layer A) contains at least (a) 70 to 99% by mass of a polyamide 6 resin, and (b) 1 to 20% by mass of an aliphatic or aromatic-aliphatic polyester resin, and the functional layer (layer B) contains at least 70% by mass or more of a polyamide 6 resin.
    Type: Application
    Filed: March 24, 2021
    Publication date: October 26, 2023
    Applicant: TOYOBO CO., LTD.
    Inventors: Kazushige UEDA, Takamichi GOTO, Takuro ENDO
  • Patent number: 11794456
    Abstract: It is provided that the laminated stretched polyamide film having excellent water-resistant adhesiveness (water-resistant lamination strength), shock resistance, and pinhole resistance. A laminated stretched polyamide film that is a biaxially stretched polyamide film comprising three layers including layer B: an easily adhesive layer, layer A: a base layer, and layer C: a slippery layer in this order, wherein the layer A contains not lower than 65% by mass of polyamide 6, the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass, and the layer C contains not lower than 70% by mass of polyamide 6 and 0.05 to 1% by mass of fine particles having an average particle diameter of 0.1 to 10 ?m.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: October 24, 2023
    Assignee: TOYOBO CO., LTD.
    Inventors: Takuro Endo, Kosuke Hama
  • Patent number: 11794457
    Abstract: A multilayered stretched polyamide film which is biaxially stretched, and comprises three layers composed of a polyamide resin composition and comprising layer B as an easily adhesive layer, layer A as a base layer, and layer C as an easily slippery layer in this order, wherein the film satisfies the following (1) to (4); (1) the layer A contains 50 to 90% by mass of polyamide 6 and 10 to 50% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass; (2) the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of the polyamide 6 copolymer in which a ratio of the copolymerization component in the copolymer is 3 to 35% by mass; (3) the layer C contains 70% by mass or more of polyamide 6 and 0.05 to 1% by mass of fine particles having an average diameter of 0.1 to 10 ?m; (4) the film has tensile strength at break of 150 MPa or more both in MD direction and TD direction; and (5) the film has laminate strength of 3.3 N/15 mm or more.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: October 24, 2023
    Assignee: TOYOBO CO., LTD.
    Inventors: Takamichi Goto, Takuro Endo
  • Patent number: 11498322
    Abstract: To provide a laminated stretched polyamide film having excellent an excellent water-resistant adhesive property (water-resistant laminate strength), impact resistance, and pinhole resistance. A laminated stretched polyamide film in which an easily adhesive layer (layer B) is laminated on at least one surface of a base layer (layer A), wherein the layer A contains not less than 70% by mass of polyamide 6, and the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: November 15, 2022
    Assignee: TOYOBO CO., LTD.
    Inventors: Kosuke Hama, Takuro Endo
  • Publication number: 20220339921
    Abstract: It is provided that a biaxially stretched polyamide film that is excellent in oxygen gas barrier property, impact resistance, and bending fatigue resistance, which are film qualities necessary for a packaging film and that is carbon-neutral by using a raw material derived from biomass; and a laminated body using the biaxially stretched polyamide film.
    Type: Application
    Filed: August 26, 2020
    Publication date: October 27, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Takuro ENDO
  • Publication number: 20220266580
    Abstract: A multilayered stretched polyamide film which is biaxially stretched, and comprises three layers composed of a polyamide resin composition and comprising layer B as an easily adhesive layer, layer A as a base layer, and layer C as an easily slippery layer in this order, wherein the film satisfies the following (1) to (4); (1) the layer A contains 50 to 90% by mass of polyamide 6 and 10 to 50% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass; (2) the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of the polyamide 6 copolymer in which a ratio of the copolymerization component in the copolymer is 3 to 35% by mass; (3) the layer C contains 70% by mass or more of polyamide 6 and 0.05 to 1% by mass of fine particles having an average diameter of 0.1 to 10 ?m; (4) the film has tensile strength at break of 150 MPa or more both in MD direction and TD direction; and (5) the film has laminate strength of 3.3 N/15 mm or more.
    Type: Application
    Filed: August 26, 2020
    Publication date: August 25, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takamichi GOTO, Takuro ENDO
  • Publication number: 20220259431
    Abstract: Provided is a gas-barrier polyamide film that has excellent bending pinhole resistance and friction pinhole resistance at the same time, that has excellent gas barrier properties, and that is suitable for use for packaging materials. In addition, the environmental load is reduced by using a plant-derived resin as a raw material. A gas-harrier polyamide film comprising an inorganic thin film layer on at least one surface of a biaxially stretched polyamide film containing 99 to 70% by mass of a polyamide 6 resin and 1 to 30% by mass of a polyamide resin in which at least a part of raw material is derived from biomass.
    Type: Application
    Filed: July 29, 2020
    Publication date: August 18, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Takamichi GOTO, Atsushi YAMAZAKI
  • Publication number: 20220161533
    Abstract: The objective of the present invention is to provide a gas barrier polyamide film excellent in water resistance adhesiveness (water resistant laminate strength), impact resistance and pinhole resistance. The gas barrier polyamide film is characterized in comprising a stretched polyamide film, wherein the stretched polyamide film comprises A Layer: a base layer and B Layer: an easily adhesive layer on at least one surface of the A Layer, C Layer: an inorganic thin film layer is laminated on the surface of the B Layer in the stretched polyamide film, the A Layer comprises 65 mass % or more of Polyamide 6, the B Layer comprises 60 to 100 mass % of a Polyamide 6 copolymer and 0 to 40 mass % of Polyamide 6, and a ratio of a copolymer component in the Polyamide 6 copolymer is 3 to 35 mass %.
    Type: Application
    Filed: March 10, 2020
    Publication date: May 26, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Kosuke HAMA
  • Publication number: 20220153007
    Abstract: It is provided that the laminated stretched polyamide film having excellent water-resistant adhesiveness (water-resistant lamination strength), shock resistance, and pinhole resistance. A laminated stretched polyamide film that is a biaxially stretched polyamide film comprising three layers including layer B: an easily adhesive layer, layer A: a base layer, and layer C: a slippery layer in this order, wherein the layer A contains not lower than 65% by mass of polyamide 6, the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass, and the layer C contains not lower than 70% by mass of polyamide 6 and 0.05 to 1% by mass of fine particles having an average particle diameter of 0.1 to 10 ?m.
    Type: Application
    Filed: March 10, 2020
    Publication date: May 19, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Kosuke HAMA
  • Publication number: 20220135752
    Abstract: The objective of the present invention is to provide a biaxially stretched polyamide film that is excellent in an impact resistance, a folding pinhole resistance and a friction pinhole resistance and that is produced from a raw material derived from a biomass. The present invention relates to a biaxially stretched polyamide film, comprising 99 to 70 mass % of a Polyamide 6 resin and 1 to 30 mass % of a polyamide resin, wherein at least a part of a raw material of the polyamide resin is derived from a biomass, and the biaxially stretched polyamide film meets the following (a) and (b): (a) the number of Gelbo pinhole defect is 10 or less after the biaxially stretched polyamide film is twisted and bent 1000 times at 1° C. using a Gelbo flex tester, (b) a distance leading to a pinhole formation by a friction resistance pinhole test is 2900 cm or more.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 5, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Kosuke HAMA, Takamichi GOTO, Shigetomo YAMAMOTO
  • Patent number: 11320356
    Abstract: Providing a method of estimating the number of microparticles such as microorganisms in a sample, without performing complicated operations. The method comprises counting by constant flow the number of target microorganisms contained in the sample at a predetermined flow rate, sectioning measurement data obtained as a result of the constant flow counting into a predetermined number of sections by a predetermined unit time for a section, counting the number of sections in which microorganisms are detected and the number of sections in which they are not detected, in the predetermined number of sections; and estimating the number of microorganisms in the sample, by a statistical method from the flow rate of the sample in the constant flow counting step, the predetermined number of sections and the predetermined unit time in the sectioning step, and the number of sections in which microorganisms are detected in the counting step.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: May 3, 2022
    Assignees: METAWATER CO., LTD.
    Inventors: Takuro Endo, Kyungju Kim, Dabide Yamaguchi
  • Publication number: 20220009151
    Abstract: To provide a gas barrier biaxially oriented polyamide film and a polyamide film mill roll, even as a product that is close to an end of a mill roll, having favorable mechanical characteristics, thermal characteristics, and few S-shape curling due to moisture absorption after being made into a bag. A biaxially oriented polyamide film having at least one layer formed of a polyamide resin containing not lower than 60% by mass of poly(m-xylylene adipamide), wherein a molecular orientation angle of the film is not smaller than 20°, a strain at moisture absorption of the film is not higher than 1.3%, an impact strength of the film is not lower than 0.7 J/15 ?m, and a heat shrinkage rate, after heating for ten minutes at 160° C., of the film is 0.6 to 3.0% in both an MD direction and a TD direction.
    Type: Application
    Filed: December 26, 2019
    Publication date: January 13, 2022
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Kosuke HAMA
  • Publication number: 20210395519
    Abstract: To provide a biaxially oriented polyamide film, even as a product that is close to an end of a mill roll, having favorable mechanical characteristics, thermal characteristics, and few S-shape curling due to moisture absorption after being made into a bag. A biaxially oriented polyamide film formed of a polyamide resin containing not lower than 60% by mass of polyamide 6, wherein a molecular orientation angle of the film is not smaller than 20°, a strain at moisture absorption of the film is not higher than 1.3%, an impact strength of the film is not lower than 0.8 J/15 ?m, and a heat shrinkage rate, after heating for ten minutes at 160° C., of the film is 0.6 to 3.0% in both an MD direction and a TD direction.
    Type: Application
    Filed: September 27, 2019
    Publication date: December 23, 2021
    Applicant: TOYOBO CO., LTD.
    Inventors: Takuro ENDO, Kosuke HAMA
  • Publication number: 20200254741
    Abstract: To provide a laminated stretched polyamide film having excellent an excellent water-resistant adhesive property (water-resistant laminate strength), impact resistance, and pinhole resistance. A laminated stretched polyamide film in which an easily adhesive layer (layer B) is laminated on at least one surface of a base layer (layer A), wherein the layer A contains not less than 70% by mass of polyamide 6, and the layer B contains 0 to 40% by mass of polyamide 6 and 60 to 100% by mass of a polyamide 6 copolymer in which a ratio of a copolymerization component in the copolymer is 3 to 35% by mass.
    Type: Application
    Filed: September 7, 2018
    Publication date: August 13, 2020
    Applicant: TOYOBO CO., LTD.
    Inventors: Kosuke HAMA, Takuro ENDO
  • Publication number: 20190204200
    Abstract: Providing a method of estimating the number of microparticles such as microorganisms in a sample, performing complicated operations. The method comprises counting by constant flow the number of target microorganisms contained in the sample at a predetermined flow rate, sectioning measurement data obtained as a result of the constant flow counting into a predetermined number of sections by a predetermined unit time for a section, counting the number of sections in which microorganisms are detected and the number of sections in which they are not detected, in the predetermined number of sections; and estimating the number of microorganisms in the sample, by a statistical method from the flow rate of the sample in the constant flow counting step, the predetermined number of sections and the predetermined unit time in the sectioning step, and the number of sections in which microorganisms are detected in the counting step.
    Type: Application
    Filed: April 17, 2017
    Publication date: July 4, 2019
    Inventors: Takuro ENDO, Kyungju KIM, Dabide YAMAGUCHI
  • Patent number: 9920162
    Abstract: The invention provides a heat-shrinkable polyester film with high mechanical strength in a width direction that is orthogonal to the main shrinking direction and high tensile rupture elongation in the film width direction after being subjected to an aging treatment in a high-temperature environment. The heat-shrinkable polyester film is made from a polyester resin containing ethylene terephthalate as the main component and a monomer component that can serve as an amorphous component in an amount of 0 mol % or more and less than 1 mol % relative to the total amount of polyester resin components.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: March 20, 2018
    Assignee: Toyobo Co., Ltd.
    Inventors: Masayuki Haruta, Shintaro Ishimaru, Takuro Endo