Patents by Inventor Michiharu Taniguchi
Michiharu Taniguchi 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: 10322559Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average fiber length of 5 to 100 mm and a thermoplastic resin. In the shaped product, a volume fraction of reinforcing fibers is 5 to 80%, a reference plane (S) and a standing plane (B) inclined at an angle of 45 to 90 degrees with respect to the reference plane are included, a ratio of an area of the standing plane (B) to an area of the reference plane (S) is 0.5 to 100, and in the fiber-reinforced composite material constituting the shaped product, a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less.Type: GrantFiled: February 27, 2014Date of Patent: June 18, 2019Assignee: Teijin LimitedInventors: Michiharu Taniguchi, Motoomi Arakawa, Toru Sugiyama, Yasunori Nagakura
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Patent number: 10006677Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin. The shaped product maintains isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.Type: GrantFiled: October 31, 2014Date of Patent: June 26, 2018Assignee: Teijin LimitedInventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
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Patent number: 9855689Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average length of 5 mm or more and 100 mm or less and a thermoplastic resin, in which a volume fraction of reinforcing fibers (Vf=100×volume of reinforcing fibers/(volume of reinforcing fibers+volume of thermoplastic resin)) is 5 to 80%, grains are formed on a surface of the shaped product, and a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more, the critical number defined by Formula (1), to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less: Critical number of single fiber=600/D??(1) (wherein D is an average fiber diameter (?m) of single reinforcing fiber).Type: GrantFiled: March 6, 2014Date of Patent: January 2, 2018Assignee: Teijin LimitedInventors: Motoomi Arakawa, Toru Sugiyama, Michiharu Taniguchi, Yasunori Nagakura
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Patent number: 8992811Abstract: This method for manufacturing a shaped product is characterized in preparing a specific random mat including a thermoplastic resin and carbon fiber bundles having an average fiber length of 5-100 mm, impregnating a thermoplastic resin into the random mat, pressing the random mat in a metal mold in a range of 0.1-20 MPa, and then taking out the random mat from the metal mold.Type: GrantFiled: February 3, 2014Date of Patent: March 31, 2015Assignee: Teijin LimitedInventors: Yasunori Nagakura, Motoomi Arakawa, Michiharu Taniguchi, Akihiko Obata
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Publication number: 20150064408Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin. The shaped product maintains isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.Type: ApplicationFiled: October 31, 2014Publication date: March 5, 2015Applicant: TEIJIN LIMITEDInventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
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Patent number: 8900502Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin, the shaped product with maintained isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.Type: GrantFiled: November 27, 2013Date of Patent: December 2, 2014Assignee: Teijin LimitedInventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
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Publication number: 20140186584Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average length of 5 mm or more and 100 mm or less and a thermoplastic resin, in which a volume fraction of reinforcing fibers (Vf=100×volume of reinforcing fibers/(volume of reinforcing fibers+volume of thermoplastic resin)) is 5 to 80%, grains are formed on a surface of the shaped product, and a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more, the critical number defined by Formula (1), to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less: Critical number of single fiber=600/D??(1) (wherein D is an average fiber diameter (?m) of single reinforcing fiber).Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: Teijin LimitedInventors: Motoomi Arakawa, Toru Sugiyama, Michiharu Taniguchi, Yasunori Nagakura
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Publication number: 20140178631Abstract: There is provided a shaped product made of a fiber-reinforced composite material including reinforcing fibers having an average fiber length of 5 to 100 mm and a thermoplastic resin. In the shaped product, a volume fraction of reinforcing fibers is 5 to 80%, a reference plane (S) and a standing plane (B) inclined at an angle of 45 to 90 degrees with respect to the reference plane are included, a ratio of an area of the standing plane (B) to an area of the reference plane (S) is 0.5 to 100, and in the fiber-reinforced composite material constituting the shaped product, a ratio of a reinforcing fiber bundle (A) including the reinforcing fibers of a critical number of single fiber or more to the total amount of the reinforcing fibers is 20 Vol % or more and 99 Vol % or less.Type: ApplicationFiled: February 27, 2014Publication date: June 26, 2014Applicant: Teijin LimitedInventors: Michiharu Taniguchi, Motoomi Arakawa, Toru Sugiyama, Yasunori Nagakura
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Publication number: 20140148072Abstract: This method for manufacturing a shaped product is characterized in preparing a specific random mat including a thermoplastic resin and carbon fiber bundles having an average fiber length of 5-100 mm, impregnating a thermoplastic resin into the random mat, pressing the random mat in a metal mold in a range of 0.1-20 MPa, and then taking out the random mat from the metal mold.Type: ApplicationFiled: February 3, 2014Publication date: May 29, 2014Applicant: Tenjin LimitedInventors: Yasunori Nagakura, Motoomi Arakawa, Michiharu Taniguchi, Akihiko Obata
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Publication number: 20140077412Abstract: The present invention provides a method for manufacturing a shaped product constituted by a fiber-reinforced composite material including reinforcing fibers and a thermoplastic resin, the shaped product with maintained isotropy of the fibers to the end thereof even if press-molded under conditions in which charge ratio of a prepreg to a die is low. Specifically, the method includes using a specific prepreg obtained by impregnating the reinforcing fibers with thermoplastic resin, and molding-processing the prepreg under specific conditions.Type: ApplicationFiled: November 27, 2013Publication date: March 20, 2014Applicant: TEIJIN LIMITEDInventors: Michiharu Taniguchi, Motoomi Arakawa, Yasunori Nagakura, Tsukasa Arai, Akihiko Obata
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Publication number: 20140004308Abstract: A molded product, including a fiber-reinforced composite material containing reinforcing fibers having an average fiber length of 5 mm to 100 mm and a thermoplastic resin, wherein the molded product has thickness gradient, an amount of the thermoplastic resin is 10 to 1,000 parts by weight per 100 parts by weight of thee reinforcing fibers, and the reinforcing fibers have a fiber areal weight of from 25 g/m2 to 3,000 g/m2 and are substantially two-dimensionally randomly oriented.Type: ApplicationFiled: August 7, 2013Publication date: January 2, 2014Applicant: TEIJIN LIMITEDInventors: Michiharu Taniguchi, Masaru Sato, Koji Suzuki, Toru Sugiyama, Yasunori Nagakura, Motoomi Arakawa
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Publication number: 20130344282Abstract: The present invention relates to a shaped product being excellent in isotropy constituted by a fiber-reinforced composite material in which discontinuous reinforcing fibers are isotropic in a plane and are two-dimensionally oriented in the thermoplastic resin, the reinforcing fibers contained in the shaped product includes a reinforcing fiber bundle (A) constituted by the reinforcing fibers of the critical single fiber number defined by formula (1) or more, a ratio of the reinforcing fiber bundle (A) to the total amount of the reinforcing fibers in the shaped product is 20 vol % or more and less than 90 vol %, and the average number (N) of the reinforcing fibers in the reinforcing fiber bundle (A) satisfies formula (2): Critical single fiber number=600/D??(1) 0.7×104/D2<N<1×105/D2??(2) wherein D is an average fiber diameter (?m) of the reinforcing fibers.Type: ApplicationFiled: August 27, 2013Publication date: December 26, 2013Applicant: TEIJIN LIMITEDInventors: Yutaka Yagi, Toru Sugiyama, Yutaka Kondo, Michiharu Taniguchi, Yuhei Konagai, Ikkou Furukawa