Patents by Inventor Takeshi Takaha
Takeshi Takaha 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: 9562247Abstract: An object of the present invention is to provide a method for industrially producing a branched glucan having a cyclic structure. The method for producing a branched glucan having a cyclic structure comprises the steps of: (1) preparing a mixed liquid which contains a branching enzyme in which starch granules are suspended at a concentration of 5% by weight or more and 50% by weight or less, and allowing the branching enzyme to act on starch in the starch granules, wherein a temperature of the mixed liquid at the time of preparation is 0° C. or higher and not higher than the gelatinization starting temperature of the starch granule; and (2) elevating the temperature of the mixed liquid to 85° C. or higher and 129° C. or lower, wherein in the method, none of ?-amylase, ?-amylase, amyloglucosidase and ?transglucosidase is added to the mixed liquid.Type: GrantFiled: December 2, 2011Date of Patent: February 7, 2017Assignee: Ezaki Glico Co., Ltd.Inventors: Takeshi Takaha, Kouji Odan, Michiyo Yanase, Iwao Kojima, Tsunehisa Akiyama
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Patent number: 9315678Abstract: One object of the present invention is to provide a method of improving the affinity of a solvent for the surface of a hardly soluble or insoluble substances. Further object of the invention is providing a molded article comprising a hardly soluble or insoluble substances using the solution of a hardly soluble or insoluble substances. A method for improving affinity of a substance surface for a solvent, comprising: bringing the substance surface into contact with water-soluble xylan and the solvent, wherein the substance is hardly soluble or insoluble in the solvent in the absence of the water-soluble xylan. A solution comprising an added water-soluble xylan, a substance, and a solvent, wherein the substance is hardly soluble or insoluble in the solvent in the absence of the water-soluble xylan. A molded article comprising the added water-soluble xylan and the hardly soluble substance.Type: GrantFiled: January 19, 2007Date of Patent: April 19, 2016Assignees: Ezaki Glico Co., Ltd., Osaka Prefecture University Public CorporationInventors: Shinichi Kitamura, Yoshinobu Terada, Takeshi Takaha, Motohide Ikeda
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Patent number: 9206531Abstract: A method for producing an amylose-containing rayon fiber, comprising the steps of: mixing an aqueous alkaline solution of amylose with viscose to obtain a mixed liquid, spinning the mixed liquid to obtain an amylose-containing rayon fiber, and bringing the amylose-containing rayon fiber into contact with iodine or polyiodide ions, thereby allowing an amylose in the amylose-containing rayon fiber to make a clathrate including the iodine or polyiodide ions, wherein the amylose is an enzymatically synthesized amylose having a weight average molecular weight of 3×104 or more and 2×105 or less. A method for collecting iodine from brackish water with high efficiency utilizing the amylase-containing rayon fibers.Type: GrantFiled: June 17, 2010Date of Patent: December 8, 2015Assignees: Kanto Natural Gas Development Co., Ltd., Omikenshi Co., Ltd., Ezaki Glico Co., Ltd.Inventors: Osamu Inoue, Masatoshi Yoshikawa, Mieko Takaku, Tatsuo Kaiho, Mitsuru Taguchi, Haruyo Sambe, Yoshinobu Terada, Takeshi Takaha
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Patent number: 9127174Abstract: Objective is to provide an aqueous composition for conductive coating which enables to form a conductive coating. In more specific embodiment, an object of the present invention is to provide an aqueous composition for conductive coating which enables to form a conductive and transparent coating, while being excellent in environmental safety and dispersion stability. An aqueous composition for conductive coating, comprising a water-soluble xylan, a resin and a carbon nanotube in an aqueous medium. The carbon nanotube may be a multilayer carbon nanotube or a single-layer carbon nanotube.Type: GrantFiled: January 19, 2007Date of Patent: September 8, 2015Assignees: Ezaki Glico Co., Ltd., Osaka Prefecture University Public CorporationInventors: Shinichi Kitamura, Yoshinobu Terada, Takeshi Takaha, Motohide Ikeda, Yoshiyuki Morimoto, Nobuo Kubozaki
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Publication number: 20130323799Abstract: An object of the present invention is to provide a method for industrially producing a branched glucan having a cyclic structure. The method for producing a branched glucan having a cyclic structure comprises the steps of: (1) preparing a mixed liquid which contains a branching enzyme in which starch granules are suspended at a concentration of 5% by weight or more and 50% by weight or less, and allowing the branching enzyme to act on starch in the starch granules, wherein a temperature of the mixed liquid at the time of preparation is 0° C. or higher and not higher than the gelatinization starting temperature of the starch granule; and (2) elevating the temperature of the mixed liquid to 85° C. or higher and 129° C. or lower, wherein in the method, none of ?-amylase, ?-amylase, amyloglucosidase and a transglucosidase is added to the mixed liquid.Type: ApplicationFiled: December 2, 2011Publication date: December 5, 2013Applicant: EZAKI GLICO CO., LTD.Inventors: Takeshi Takaha, Kouji Odan, Michiyo Yanase, Iwao Kojima, Tsunehisa Akiyama
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Publication number: 20130302405Abstract: An object of the present invention is to provide a glucosamine-containing glucan, a modified product and a conjugate thereof. The glucosamine-containing glucan of the present invention is a glucosamine-containing glucan wherein the glucan has a plurality of non-reducing ends and at least one glucosamine residue is bound via an ?-1,4-bond to each of two or more non-reducing ends of the branched ?-1,4-glucan, but no glucosamine residue is present at a position other than the non-reducing ends of the branched ?-1,4-glucan, wherein the degree of polymerization of the glucan is 15 or more and 4×105 or less. The glucosamine-containing glucan of the present invention can be provided by allowing an ?-glucan phosphorylase to act on an aqueous solution comprising a branched ?-1,4-glucan and glucosamine-1-phosphate.Type: ApplicationFiled: November 7, 2011Publication date: November 14, 2013Applicant: EZAKI GLICO CO., LTD.Inventors: Takeshi Takaha, Akiko Kubo, Michiyo Yanase
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Publication number: 20130295163Abstract: An object of the present invention is to provide a glucan containing at least one residue selected from an N-acetylglucosamine residue and a galactose residue, and a modified product. The branched glucan of the present invention is a branched glucan wherein the branched glucan has a plurality of non-reducing ends and at least one residue selected from an N-acetylglucosamine residue and a galactose residue is bound via an ?-1,4-bond to each of two or more non-reducing ends of the branched ?-1,4-glucan, but neither an N-acetylglucosamine residue nor a galactose residue is present at the position other than the non-reducing ends of the branched ?-1,4-glucan.Type: ApplicationFiled: November 7, 2011Publication date: November 7, 2013Applicant: EZAKI GLICO CO., LTD.Inventors: Takeshi Takaha, Michiyo Yanase, Akiko Kubo, Haruyo Sambe, Ryo Kakutani
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Patent number: 8575131Abstract: An object of the present invention is to provide a uronic acid-containing glucan or a modified product thereof. The glucuronic acid-containing glucan of the present invention is a glucuronic acid-containing glucan in which a glucuronic acid residue is bound to at least one non-reducing end of a glucan, and the glucan is a branched ?-1,4 glucan or a linear ?-1,4 glucan. The glucuronic acid-containing glucan of the present invention can be provided by allowing ?-glucan phosphorylase derived from Aquifex aeolicus VF5 to act on glucuronic acid-1-phosphate to thereby transfer a glucuronic acid residue to the non-reducing end of the receptor glucan.Type: GrantFiled: May 10, 2010Date of Patent: November 5, 2013Assignees: National University Corporation Kagoshima University, Ezaki Glico Co., Ltd.Inventors: Junichi Kadokawa, Takeshi Takaha, Akiko Kubo, Michiyo Yanase, Kayo Hosoya
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Publication number: 20120183491Abstract: A method for producing an amylose-containing rayon fiber, comprising the steps of: mixing an aqueous alkaline solution of amylose with viscose to obtain a mixed liquid, spinning the mixed liquid to obtain an amylose-containing rayon fiber, and bringing the amylose-containing rayon fiber into contact with iodine or polyiodide ions, thereby allowing an amylose in the amylose-containing rayon fiber to make a clathrate including the iodine or polyiodide ions, wherein the amylose is an enzymatically synthesized amylose having a weight average molecular weight of 3×104 or more and 2×105 or less. A method for collecting iodine from brackish water with high efficiency utilizing the amylase-containing rayon fibers.Type: ApplicationFiled: June 17, 2010Publication date: July 19, 2012Applicants: OMIKENSHI CO., LTD., KANTO NATURAL GAS DEVELOPMENT CO., LTD., EZAKI GLICO CO., LTD.Inventors: Osamu Inoue, Masatoshi Yoshikawa, Mieko Takaku, Tatsuo Kaiho, Mitsuru Taguchi, Haruyo Sambe, Yoshinobu Terada, Takeshi Takaha
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Publication number: 20120135063Abstract: An object of the present invention is to provide a uronic acid-containing glucan or a modified product thereof. The glucuronic acid-containing glucan of the present invention is a glucuronic acid-containing glucan in which a glucuronic acid residue is bound to at least one non-reducing end of a glucan, and the glucan is a branched ?-1,4 glucan or a linear ?-1,4 glucan. The glucuronic acid-containing glucan of the present invention can be provided by allowing ?-glucan phosphorylase derived from Aquifex aeolicus VF5 to act on glucuronic acid-1-phosphate to thereby transfer a glucuronic acid residue to the non-reducing end of the receptor glucan.Type: ApplicationFiled: May 10, 2010Publication date: May 31, 2012Applicant: EZAKI GLICO CO., LTD.Inventors: Junichi Kadokawa, Takeshi Takaha, Akiko Kubo, Michiyo Yanase, Kayo Hosoya
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Patent number: 8013148Abstract: The present application discloses a molded article, and a process for preparing a molded article consisting essentially of (i) high molecular weight linear ?-1,4-glucan and (ii) low molecular weight linear ?-1,4-glucan, wherein the process comprises the step of: adding the low molecular weight linear ?-1,4-glucan to a solution comprising the high molecular weight linear ?-1,4-glucan to gel the solution, wherein the low molecular weight linear ?-1,4-glucan has a degree of polymerization of greater than or equal to 180 and less than 620, and has a molecular weight distribution of not greater than 1.25 and, the high molecular weight linear ?-1,4-glucan has a degree of polymerization of greater than or equal to 620 and less than 37000, and has a molecular weight distribution of not greater than 1.25.Type: GrantFiled: July 9, 2004Date of Patent: September 6, 2011Assignees: Ezaki Glico Co., Ltd., Sanwa Cornstarch Co., Ltd.Inventors: Takeshi Takaha, Kazutoshi Fujii, Takashi Kuriki, Kenichi Kudo, Mamoru Wada, Michihiro Sunako, Junichi Takahara
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Patent number: 7968309Abstract: A sucrose phosphorylase (SP) having improved thermostability obtained by modifying a natural SP and a method for producing the SP having improved thermostability is provided. This SP having improved thermostability has an amino acid residue which is different from that of the natural sucrose phosphorylase, in at least one position selected from the group consisting of a position corresponding to position 14, a position corresponding to position 29 and a position corresponding to position 44 in motif sequence 1; a position corresponding to position 7, a position corresponding to position 19, a position corresponding to position 23 and a position corresponding to position 34 in motif sequence 2; and a position corresponding to position 19 in motif sequence 3, and wherein the enzyme activity of the SP having improved thermostability at 37° C., after heating the SP having improved thermostability in 20 mM Tris buffer (pH 7.0) at 55° C.Type: GrantFiled: August 31, 2004Date of Patent: June 28, 2011Assignee: Ezaki Glico Co., Ltd.Inventors: Kazutoshi Fujii, Masae Iiboshi, Michiyo Yanase, Hiroki Takata, Takeshi Takaha, Takashi Kuriki
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Publication number: 20100224836Abstract: Objective is to provide an aqueous composition for conductive coating which enables to form a conductive coating. In more specific embodiment, an object of the present invention is to provide an aqueous composition for conductive coating which enables to form a conductive and transparent coating, while being excellent in environmental safety and dispersion stability. An aqueous composition for conductive coating, comprising a water-soluble xylan, a resin and a carbon nanotube in an aqueous medium. The carbon nanotube may be a multilayer carbon nanotube or a single-layer carbon nanotube.Type: ApplicationFiled: January 19, 2007Publication date: September 9, 2010Inventors: Shinichi Kitamura, Yoshinobu Terada, Takeshi Takaha, Motohide Ikeda, Yoshiyuki Morimoto, Nobuo Kubozaki
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Patent number: 7759316Abstract: The present invention provides a biodegradable article formed from enzyme-synthesized amylose using phosphorylase, wherein the enzyme-synthesized amylose is composed of glucose monomers exclusively bonded by ?-1,4-glucosidic likage and has a weight average molecular weight of not less than 100 kDa, preferable not less than 600 kDa. The enzyme-synthesized amylose employed in the present invention has a molecular weight distribution (Mw/Mn) of not more than 1.25 and can be chemically modified if desired. The biodegradable article of the present invention can be produced by (a) the enzyme-synthesized amylose and/or its modified one, or a combination of the amylose (a) and another polymer material (b).Type: GrantFiled: July 17, 2001Date of Patent: July 20, 2010Assignees: Ezaki Glico Co., Ltd., Sanwa Kosan Kabushiki KaishaInventors: Shinichi Kitamura, Nobuo Shiraishi, Mariko Yoshioka, Kenichi Kudo, Shigetaka Okada, Takeshi Takaha, Kazutoshi Fujii, Yoshinobu Terada
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Patent number: 7723090Abstract: An ?-glucan phosphorylase having improved thermostability, which obtained by modifying natural ?-glucan phosphorylase, and a method for producing this ?-glucan phosphorylase having improved thermostability are provided. The natural ?-glucan phosphorylase is derived from a plant, this ?-glucan phosphorylase having improved thermostability has an amino acid residue which is different from that of the natural ?-glucan phosphorylase in at least one position selected from the group consisting of a position corresponding to position 4 in a motif sequence 1L or 1H, a position corresponding to position 4 in a motif sequence 2, and a position corresponding to position 7 in a motif sequence 3L or 3H, and wherein the enzyme activity of ?-glucan phosphorylase having improved thermostability at 37° C., after heating in a 20 mM citrate buffer (pH 6.7) at 60° C. for 10 minutes, is 20% or more of the enzyme activity of the ?-glucan phosphorylase having improved thermostability at 37° C., before heating.Type: GrantFiled: May 13, 2009Date of Patent: May 25, 2010Assignee: Ezaki Glico Co., Ltd.Inventors: Michiyo Yanase, Hiroki Takata, Kazutoshi Fujii, Takeshi Takaha, Takashi Kuriki
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Patent number: 7670812Abstract: A method of producing glycogen comprising a step of: allowing a branching enzyme having the ability to synthesize glycogen to act on a substrate in a solution to produce a glycogen, wherein the substrate is an ?-glucan being linked mainly with ?-1,4-glucosidic bonds and having a degree of polymerization of 4 or more, and the number-average molecular weight of saccharides in the solution before initiation of the reaction is more than 180 but not more than 150,000. (The branching enzyme activity of the branching enzyme)/(the molecular-weight-decreasing activity of the branching enzyme) can be 500 or less. The branching enzyme can be a thermostable branching enzyme.Type: GrantFiled: September 28, 2005Date of Patent: March 2, 2010Assignee: Ezaki Glico Co., Ltd.Inventors: Hideki Kajiura, Hiroki Takata, Takeshi Takaha, Takashi Kuriki
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Publication number: 20100047891Abstract: An ?-glucan phosphorylase having improved thermostability, which obtained by modifying natural ?-glucan phosphorylase, and a method for producing this ?-glucan phosphorylase having improved thermostability are provided. The natural ?-glucan phosphorylase is derived from a plant, this ?-glucan phosphorylase having improved thermostability has an amino acid residue which is different from that of the natural ?-glucan phosphorylase in at least one position selected from the group consisting of a position corresponding to position 4 in a motif sequence 1L or 1H, a position corresponding to position 4 in a motif sequence 2, and a position corresponding to position 7 in a motif sequence 3L or 3H, and wherein the enzyme activity of ?-glucan phosphorylase having improved thermostability at 37° C., after heating in a 20 mM citrate buffer (pH 6.7) at 60° C. for 10 minutes, is 20% or more of the enzyme activity of the ?-glucan phosphorylase having improved thermostability at 37° C., before heating.Type: ApplicationFiled: May 13, 2009Publication date: February 25, 2010Inventors: Michiyo Yanase, Hiroki Takata, Kazutoshi Fujii, Takeshi Takaha, Takashi Kuriki
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Patent number: 7569377Abstract: An ?-glucan phosphorylase having improved thermostability, which obtained by modifying natural ?-glucan phosphorylase, and a method for producing this ?-glucan phosphorylase having improved thermostability are provided. The natural ?-glucan phosphorylase is derived from a plant, this ?-glucan phosphorylase having improved thermostability has an amino acid residue which is different from that of the natural ?-glucan phosphorylase in at least one position selected from the group consisting of a position corresponding to position 4 in a motif sequence 1L or 1H, a position corresponding to position 4 in a motif sequence 2, and a position corresponding to position 7 in a motif sequence 3L or 3H, and wherein the enzyme activity of ?-glucan phosphorylase having improved thermostability at 37° C., after heating in a 20 mM citrate buffer (pH 6.7) at 60° C. for 10 minutes, is 20% or more of the enzyme activity of the ?-glucan phosphorylase having improved thermostability at 37° C., before heating.Type: GrantFiled: June 15, 2004Date of Patent: August 4, 2009Assignee: Ezaki Glico Co., Ltd.Inventors: Michiyo Yanase, Hiroki Takata, Kazutoshi Fujii, Takeshi Takaha, Takashi Kuriki
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Publication number: 20090148573Abstract: One object of the present invention is to provide a method of improving the affinity of a solvent for the surface of a hardly soluble or insoluble substances. Further object of the invention is providing a molded article comprising a hardly soluble or insoluble substances using the solution of a hardly soluble or insoluble substances. A method for improving affinity of a substance surface for a solvent, comprising: bringing the substance surface into contact with water-soluble xylan and the solvent, wherein the substance is hardly soluble or insoluble in the solvent in the absence of the water-soluble xylan. A solution comprising an added water-soluble xylan, a substance, and a solvent, wherein the substance is hardly soluble or insoluble in the solvent in the absence of the water-soluble xylan. A molded article comprising the added water-soluble xylan and the hardly soluble substance.Type: ApplicationFiled: January 19, 2007Publication date: June 11, 2009Inventors: Shinichi Kitamura, Yoshinobu Terada, Takeshi Takaha, Motohide Ikeda
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Publication number: 20090074829Abstract: The object is to provide a novel heparin alternative material, which is excellent in safety and in vivo degradability. Disclosed are: a novel heparin alternative material, which comprises an enzymatically synthesized ?-1,4-glucan derivative and has functions substituting those of heparin, such as an anticoagulation activity and functions of a material for storage or sustained release of a heparin-binding growth factor; a method for production of the substitute material; and a preparation or article for medical applications or a cosmetic produced using the heparin alternative material.Type: ApplicationFiled: March 13, 2007Publication date: March 19, 2009Inventors: Masao Tanihara, Kayo Hosoya, Takeshi Takaha, Junichi Takahara, Michihiro Sunako