Patents by Inventor Tomihiro Ishida
Tomihiro Ishida 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: 9006323Abstract: A dispersion contains a flame-resistant polymer, which can improve shaping stability of the flame-resistant polymer during ejection from a die orifice, and physical stability of a shaped product in a washing step. The dispersion containing a flame-resistant polymer is a dispersion in which a flame-resistant polymer is dispersed in an organic solvent, an in-water tensile strength thereof per unit cross-sectional area is 1.0 MPa or more and 6.5 MPa or less, the flame-resistant polymer can be preferably obtained by heat-treating an acrylonitrile polymer in the presence of at least one kind of acid, acid anhydride or acid chloride in an organic solvent, and a suitable organic solvent is a polar organic solvent.Type: GrantFiled: December 19, 2007Date of Patent: April 14, 2015Assignee: Toray Industries, Inc.Inventors: Masafumi Sudo, Daisuke Kawakami, Tomihiro Ishida
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Patent number: 8043693Abstract: A flame-resistant polymer excels in moldability capable of providing a flame-resistant molded item of novel configuration; a relevant flame-resistant polymer solution; a process for easily producing them; a carbon molding from the flame-resistant polymer; and a process for easily producing the same. A flame-resistant polymer is modified with an amine compound. Further, a flame-resistant polymer solution has the polymer dissolved in a polar organic solvent. A flame-resistant molding whose part or entirety is constituted of the flame-resistant polymer modified with an amine compound. A carbon molding was part or entirety constituted of a carbon component resulting from carbonization of the flame-resistant polymer modified with an amine compound. From the solution containing the flame-resistant polymer, moldings of various configurations can be obtained through further work.Type: GrantFiled: December 9, 2009Date of Patent: October 25, 2011Assignee: Toray Industries, Inc.Inventors: Tetsunori Higuchi, Katsumi Yamasaki, Koichi Yamaoka, Tomihiro Ishida
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Patent number: 7976945Abstract: In a flame resistant fiber assembly obtainable by fiber forming a flame resistant polymer, a flame resistant fiber of a higher performance is obtained by improving fiber forming ability. A carbon fiber of a high performance is obtained by carbonizing the flame resistant fiber. At obtaining a flame resistant fiber by subjecting a solution containing a flame resistant polymer modified by an amine-based compound to a wet spinning or a semi-dry spinning in a coagulation bath in such a way that a degree of swelling of a coagulated yarn at the outlet of the coagulation bath is 100 to 1000 wt % and then, in a bath, subjecting to a drawing and/or water washing and to a drying under tension, the flame resistant fiber is produced by controlling temperature of the drawing bath/water washing bath, drying temperature or tension in such a way that the obtained fiber would not crystallize. A carbon fiber is produced by carbonizing the flame resistant fiber.Type: GrantFiled: August 4, 2006Date of Patent: July 12, 2011Assignee: Toray Industires, Inc.Inventors: Daisuke Kawakami, Tetsunori Higuchi, Katsumi Yamasaki, Tomihiro Ishida, Koichi Yamaoka
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Publication number: 20100278716Abstract: A dispersion contains a flame-resistant polymer, which can improve shaping stability of the flame-resistant polymer during ejection from a die orifice, and physical stability of a shaped product in a washing step. The dispersion containing a flame-resistant polymer is a dispersion in which a flame-resistant polymer is dispersed in an organic solvent, an in-water tensile strength thereof per unit cross-sectional area is 1.0 MPa or more and 6.5 MPa or less, the flame-resistant polymer can be preferably obtained by heat-treating an acrylonitrile polymer in the presence of at least one kind of acid, acid anhydride or acid chloride in an organic solvent, and a suitable organic solvent is a polar organic solvent.Type: ApplicationFiled: December 19, 2007Publication date: November 4, 2010Applicant: TORAY INDUSTRIES, INC.Inventors: Masafumi Sudo, Daisuke Kawakami, Tomihiro Ishida
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Publication number: 20100086762Abstract: A flame-resistant polymer excels in moldability capable of providing a flame-resistant molded item of novel configuration; a relevant flame-resistant polymer solution; a process for easily producing them; a carbon molding from the flame-resistant polymer; and a process for easily producing the same. A flame-resistant polymer is modified with an amine compound. Further, a flame-resistant polymer solution has the polymer dissolved in a polar organic solvent. A flame-resistant molding whose part or entirety is constituted of the flame-resistant polymer modified with an amine compound. A carbon molding was part or entirety constituted of a carbon component resulting from carbonization of the flame-resistant polymer modified with an amine compound. From the solution containing the flame-resistant polymer, moldings of various configurations can be obtained through further work.Type: ApplicationFiled: December 9, 2009Publication date: April 8, 2010Applicant: TORAY INDUSTRIES, INC.Inventors: Tetsunori Higuchi, Katsumi Yamasaki, Koichi Yamaoka, Tomihiro Ishida
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Patent number: 7655716Abstract: A flame-resistant polymer excelling in moldability capable of providing a flame-resistant molded item of novel configuration; a relevant flame-resistant polymer solution; a process for easily producing them; a carbon molding from the flame-resistant polymer; and a process for easily producing the same. There is provided a flame-resistant polymer modified with an amine compound. Further, there is provided a flame-resistant polymer solution in which the polymer is dissolved in a polar organic solvent. Still further, there is provided a flame-resistant molding whose part or entirety is constituted of the flame-resistant polymer modified with an amine compound. Moreover, there is provided a carbon molding whose part or entirety is constituted of a carbon component resulting from carbonization of the flame-resistant polymer modified with an amine compound. Still further, there is provided a process for producing them.Type: GrantFiled: February 18, 2005Date of Patent: February 2, 2010Assignee: Toray Industries, Inc.Inventors: Tetsunori Higuchi, Katsumi Yamasaki, Koichi Yamaoka, Tomihiro Ishida
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Publication number: 20080299389Abstract: In a flame resistant fiber assembly obtainable by fiber forming a flame resistant polymer, a flame resistant fiber of a higher performance is obtained by improving fiber forming ability. A carbon fiber of a high performance is obtained by carbonizing the flame resistant fiber. At obtaining a flame resistant fiber by subjecting a solution containing a flame resistant polymer modified by an amine-based compound to a wet spinning or a semi-dry spinning in a coagulation bath in such a way that a degree of swelling of a coagulated yarn at the outlet of the coagulation bath is 100 to 1000 wt % and then, in a bath, subjecting to a drawing and/or water washing and to a drying under tension, the flame resistant fiber is produced by controlling temperature of the drawing bath/water washing bath, drying temperature or tension in such a way that the obtained fiber would not crystallize. A carbon fiber is produced by carbonizing the flame resistant fiber.Type: ApplicationFiled: August 4, 2006Publication date: December 4, 2008Applicant: TORAY INDUSTRIES, INC.Inventors: Daisuke Kawakami, Tetsunori Higuchi, Katsumi Yamasaki, Tomihiro Ishida, Koichi Yamaoka
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Publication number: 20070142515Abstract: A flame-resistant polymer excelling in moldability capable of providing a flame-resistant molded item of novel configuration; a relevant flame-resistant polymer solution; a process for easily producing them; a carbon molding from the flame-resistant polymer; and a process for easily producing the same. There is provided a flame-resistant polymer modified with an amine compound. Further, there is provided a flame-resistant polymer solution in which the polymer is dissolved in a polar organic solvent. Still further, there is provided a flame-resistant molding whose part or entirety is constituted of the flame-resistant polymer modified with an amine compound. Moreover, there is provided a carbon molding whose part or entirety is constituted of a carbon component resulting from carbonization of the flame-resistant polymer modified with an amine compound. Still further, there is provided a process for producing them.Type: ApplicationFiled: February 18, 2005Publication date: June 21, 2007Applicant: Toray Industries, Inc. a corporation of JapanInventors: Tetsunori Higuchi, Katsumi Yamasaki, Koichi Yamaoka, Tomihiro Ishida