Patents by Inventor Yukihiro IKURA
Yukihiro IKURA 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).
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Patent number: 11905399Abstract: A resin formed body obtained from a resin composition that contains a polypropylene resin and a cellulose fiber, the polypropylene resin partially containing an acid modified polypropylene resin, wherein the resin formed body has a diffraction peak derived from a polypropylene ?-crystal (040) plane at a position of a scattering vector s of 1.92±0.1 nm?1, a diffraction peak derived from a polypropylene ?-crystal (300) plane at a position of a scattering vector s of 1.83±0.1 nm?1, and a diffraction peak derived from a cellulose I? type crystal (004) plane at a position of a scattering vector s of 3.86±0.1 nm?1, observed in a wide-angle X-ray diffraction measurement, and wherein an orientation degree of the cellulose fiber in the resin formed body is larger than 0.1 and less than 0.8.Type: GrantFiled: March 15, 2021Date of Patent: February 20, 2024Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Yukihiro Ikura, Suzune Ito, Yasuo Nakajima, Kenichi Suyama, Jae Kyung Kim, Hiroki Tanaka, Isao Tomomatsu
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Patent number: 11820883Abstract: A resin formed body, having a diffraction peak at a position where a scattering vector s is 3.86±0.1 nm?1 in a wide-angle X-ray diffraction measurement, and having at least one melting peak each at respective regions of 129° C. or lower and 159° C. or higher in a differential scanning calorimetry, and with which a peak of tan ? is observed in a range of ?40±10° C. in a dynamic viscoelastic measurement, and a resin composition suitable for preparing the same.Type: GrantFiled: March 12, 2021Date of Patent: November 21, 2023Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Jae Kyung Kim, Kenichi Suyama, Suzune Ito, Yukihiro Ikura
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Publication number: 20230312883Abstract: A cellulose fiber reinforced thermoplastic resin formed body, containing a thermoplastic resin, a cellulose fiber and an organic fiber different from the cellulose fiber, in which, in the resin formed body, the content of the thermoplastic resin is 39 to 80 mass %, the content of the cellulose fiber is 5 to 55 mass %, and the content of the organic fiber different from the cellulose fiber is 4 to 35 mass %; and a method of producing the same.Type: ApplicationFiled: June 7, 2023Publication date: October 5, 2023Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Yukihiro IKURA, Kenichi SUYAMA, Mayu SATAKE, Yui HAMURO, Yasuo NAKAJIMA
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Publication number: 20230159714Abstract: A cellulose fiber reinforced resin formed body, which is obtained by molding a cellulose fiber reinforced resin composition containing a polypropylene resin, an alkoxysilane-modified polypropylene resin, and a cellulose fiber; and a method of producing the same.Type: ApplicationFiled: January 11, 2023Publication date: May 25, 2023Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Mayu SATAKE, Yukihiro IKURA, Suzune ITO, Yasuo NAKAJIMA, Kenichi SUYAMA, Hiroki TANAKA, Isao TOMOMATSU, Yui HAMURO
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Publication number: 20220025133Abstract: An organic fiber-reinforced resin formed body that contains a resin and a cellulose fiber, wherein the resin formed body has a density of 0.65 g/cm3 or less, and a method for producing the same.Type: ApplicationFiled: September 24, 2021Publication date: January 27, 2022Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Yukihiro IKURA, Mayu SATAKE, Suzune ITO, Yasuo NAKAJIMA, Kenichi SUYAMA, Jae Kyung KIM, Hiroki TANAKA, Isao TOMOMATSU
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Publication number: 20220010113Abstract: A cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having respective diffraction peaks observed at positions of a scattering vector s of 1.61±0.1 nm?1, 1.92±0.1 nm?1, and 3.86±0.1 nm?1 in a wide-angle X-ray diffraction measurement, and is characterized by having ?T calculated by the following formula (1) of 40.0° C. or more; and a cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having the above diffraction peaks and is characterized by having ?Tm and ?Tc expressed by the following formulae (2) and (3) and satisfying ?Tm<?Tc; and a producing method of these.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Yukihiro IKURA, Mayu SATAKE, Suzune ITO, Yasuo NAKAJIMA, Kenichi SUYAMA, Jae Kyung KIM, Hiroki TANAKA, Isao TOMOMATSU
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Patent number: 11203673Abstract: A thermoplastic composite material comprising, a fiber bundle having a polypropylene emulsion impregnated therein and having a plurality of reinforcing fibers lined up in a predetermined direction, and satisfies the following conditions (1) to (4); and a formed body: (1) A void content of the thermoplastic composite material is 3% or less, (2) A fiber volume fraction of the thermoplastic composite material is 40% or more and 70% or less, (3) A bending strength of a laminated body, in which a plurality of layers of the thermoplastic composite material has been laminated so that the reinforcing fibers would be lined up in one direction, when bent in the fiber-axis direction and measured in conformity to JIS K7074, is 250 MPa or more, and a bending elastic modulus of the laminated body is 90 GPa or more, and (4) A variation coefficient of the bending strength, when measured at N=5 or more and calculated in conformity to JIS K7074, is within 7%.Type: GrantFiled: May 4, 2018Date of Patent: December 21, 2021Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Motoko Yoshizaki, Makiko Nakano, Takayori Ito, Yukihiro Ikura, Takahiro Iida, Yasumasa Morishima, Hidekazu Hara
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Patent number: 11192346Abstract: A laminated body, containing a fiber-reinforced resin, in which a fiber-reinforced thermoplastic resin layer (1) containing fiber bundle of reinforcing fibers and a first thermoplastic resin, and a resin layer (2) containing a second thermoplastic resin, are alternately laminated, to form the fiber-reinforced resin, and the ratio of the indentation elastic modulus EIT-B of the first thermoplastic resin portion of the laminated body with respect to the indentation elastic modulus EIT-C of the second thermoplastic resin is 1.5 or more and 5.0 or less; a fiber-reinforced composite resin material; and a method of producing these.Type: GrantFiled: October 25, 2019Date of Patent: December 7, 2021Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Motoko Yoshizaki, Makiko Nakano, Yukihiro Ikura, Jirou Hiroishi, Isao Tomomatsu, Yousuke Kokubo, Yoichiro Negishi
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Publication number: 20210198462Abstract: A resin formed body, having a diffraction peak at a position where a scattering vector s is 3.86±0.1 nm?1 in a wide-angle X-ray diffraction measurement, and having at least one melting peak each at respective regions of 129° C. or lower and 159° C. or higher in a differential scanning calorimetry, and with which a peak of tan ? is observed in a range of ?40±10° C. in a dynamic viscoelastic measurement, and a resin composition suitable for preparing the same.Type: ApplicationFiled: March 12, 2021Publication date: July 1, 2021Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Jae Kyung KIM, Kenichi SUYAMA, Suzune ITO, Yukihiro IKURA
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Publication number: 20210198463Abstract: A resin formed body obtained from a resin composition that contains a polypropylene resin and a cellulose fiber, the polypropylene resin partially containing an acid modified polypropylene resin, wherein the resin formed body has a diffraction peak derived from a polypropylene ?-crystal (040) plane at a position of a scattering vector s of 1.92±0.1 nm?1, a diffraction peak derived from a polypropylene ?-crystal (300) plane at a position of a scattering vector s of 1.83±0.1 nm?1, and a diffraction peak derived from a cellulose I? type crystal (004) plane at a position of a scattering vector s of 3.86±0.1 nm?1, observed in a wide-angle X-ray diffraction measurement, and wherein an orientation degree of the cellulose fiber in the resin formed body is larger than 0.1 and less than 0.8.Type: ApplicationFiled: March 15, 2021Publication date: July 1, 2021Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Yukihiro IKURA, Suzune ITO, Yasuo NAKAJIMA, Kenichi SUYAMA, Jae Kyung KIM, Hiroki TANAKA, Isao TOMOMATSU
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Publication number: 20200055294Abstract: A laminated body, containing a fiber-reinforced resin, in which a fiber-reinforced thermoplastic resin layer (1) containing fiber bundle of reinforcing fibers and a first thermoplastic resin, and a resin layer (2) containing a second thermoplastic resin, are alternately laminated, to form the fiber-reinforced resin, and the ratio of the indentation elastic modulus EIT-B of the first thermoplastic resin portion of the laminated body with respect to the indentation elastic modulus EIT-C of the second thermoplastic resin is 1.5 or more and 5.0 or less; a fiber-reinforced composite resin material; and a method of producing these.Type: ApplicationFiled: October 25, 2019Publication date: February 20, 2020Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Motoko YOSHIZAKI, Makiko NAKANO, Yukihiro IKURA, Jirou HIROISHI, Isao TOMOMATSU, Yousuke KOKUBO, Yoichiro NEGISHI
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Publication number: 20180251610Abstract: A thermoplastic composite material comprising, a fiber bundle having a polypropylene emulsion impregnated therein and having a plurality of reinforcing fibers lined up in a predetermined direction, and satisfies the following conditions (1) to (4); and a formed body: (1) A void content of the thermoplastic composite material is 3% or less, (2) A fiber volume fraction of the thermoplastic composite material is 40% or more and 70% or less, (3) A bending strength of a laminated body, in which a plurality of layers of the thermoplastic composite material has been laminated so that the reinforcing fibers would be lined up in one direction, when bent in the fiber-axis direction and measured in conformity to JIS K7074, is 250 MPa or more, and a bending elastic modulus of the laminated body is 90 GPa or more, and (4) A variation coefficient of the bending strength, when measured at N=5 or more and calculated in conformity to JIS K7074, is within 7%.Type: ApplicationFiled: May 4, 2018Publication date: September 6, 2018Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Motoko YOSHIZAKI, Makiko NAKANO, Takayori ITO, Yukihiro IKURA, Takahiro IIDA, Yasumasa MORISHIMA, Hidekazu HARA