Patents by Inventor Shota Arakawa
Shota Arakawa 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: 11911341Abstract: Provided is a multilayer vessel excellent in gas barrier performance and transparency and its application. The multilayer vessel contains a layer (X) that contains at least one type of polyolefin resin as the major ingredient; and a layer (Y) that contains a polyamide resin (A) as the major ingredient, the polyamide resin (A) being composed of a structural unit derived from diamine, and a structural unit derived from dicarboxylic acid, 70 mol % or more of the structural unit derived from diamine being derived from metaxylylenediamine, meanwhile 30 to 60 mol % of the structural unit derived from dicarboxylic acid being derived from straight chain aliphatic ?,?-dicarboxylic acid having 4 to 20 carbon atoms, and 70 to 40 mol % being derived from isophthalic acid.Type: GrantFiled: February 15, 2017Date of Patent: February 27, 2024Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota Arakawa, Toshiya Naito, Satoshi Okada, Kenichiro Usuda, Takumi Toida, Haruka Okazaki, Fumihiro Ito
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Publication number: 20210379692Abstract: A manufacturing method of a multilayer syringe barrel is provided and includes: a finish cutting a remaining gate of a nozzle portion of a multilayer syringe barrel that is injection-molded from a nozzle tip, with a cutting blade of an ultrasonic cutting apparatus including a mechanism for suppressing abnormal vibration; and irradiating a laser beam to a corner portion of the nozzle portion, the corner portion being formed during the finish cutting.Type: ApplicationFiled: August 14, 2019Publication date: December 9, 2021Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shun OGAWA, Shota ARAKAWA
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Publication number: 20190070072Abstract: Provided is a multilayer vessel excellent in gas barrier performance and transparency and its application. The multilayer vessel contains a layer (X) that contains at least one type of polyolefin resin as the major ingredient; and a layer (Y) that contains a polyamide resin (A) as the major ingredient, the polyamide resin (A) being composed of a structural unit derived from diamine, and a structural unit derived from dicarboxylic acid, 70 mol % or more of the structural unit derived from diamine being derived from metaxylylenediamine, meanwhile 30 to 60 mol % of the structural unit derived from dicarboxylic acid being derived from straight chain aliphatic ?,?-dicarboxylic acid having 4 to 20 carbon atoms, and 70 to 40 mol % being derived from isophthalic acid.Type: ApplicationFiled: February 15, 2017Publication date: March 7, 2019Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota ARAKAWA, Toshiya NAITO, Satoshi OKADA, Kenichiro USUDA, Takumi TOIDA, Haruka OKAZAKI, Fumihiro ITO
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Patent number: 10131481Abstract: An oxygen absorbing multilayer container having at least three layers of a first resin layer containing a thermoplastic resin, an oxygen absorbing layer containing an oxygen absorbing resin composition which contains a polyester compound (a) containing a constituent unit having a tetralin ring and a transition metal catalyst, and a second resin layer containing the same type of thermoplastic resin as the thermoplastic resin contained in the first resin layer, in this order, in which a cycloolefin polymer having a glass transition temperature of 50 to 110° C. is contained as the thermoplastic resin.Type: GrantFiled: March 25, 2015Date of Patent: November 20, 2018Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota Arakawa, Takashi Kashiba
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Publication number: 20180296437Abstract: Provided is a medical multilayer vessel with gas barrier performance and transparency suitable enough for medical packaging materials which are subject to heat sterilization. The medical multilayer vessel containing layer (X) contains a water vapor barrier polymer that contains polyolefin resin(s), and a gas barrier layer (Y) composed of a polyamide resin composition (P), the polyamide resin composition (P) contains 10 to 45% by mass of polyamide resin (A) that contains a diamine unit with a content of a structural unit derived from xylylenediamine of 70 mol % or more, and a dicarboxylic acid unit with a content of a structural unit derived from a straight-chain aliphatic dicarboxylic acid having 6 to 18 carbon atoms of 70 mol % or more; and, 90 to 55% by mass of a poly(hexamethylene isophthalamide)/poly(hexamethylene terephthalamide) copolymer (B).Type: ApplicationFiled: October 3, 2016Publication date: October 18, 2018Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota ARAKAWA, Toshiya NAITO
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Patent number: 10035129Abstract: Oxygen-absorbing resin composition, not responsive to a metal detector, producing no odor after absorption of oxygen and has excellent oxygen-absorbing performance in a wide range of humidity conditions from low to high humidity. An oxygen-absorbing molded article, and a multilayer body, container, injection-molded article and medical containers also provided. The oxygen absorbing resin composition contains a polyester, comprising at least one constituent unit having a tetralin ring component compound, a transition metal catalyst, and a catalyst for producing the polyester. The oxygen-absorbing molded article of the present invention can be formed by molding the oxygen-absorbing resin composition into a film or a sheet. The multilayer body, container, injection-molded article, medical container, etc. of the present invention are obtained by using the oxygen-absorbing resin composition.Type: GrantFiled: November 22, 2012Date of Patent: July 31, 2018Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
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Patent number: 10035640Abstract: Provided is an oxygen-absorbing multilayer body including an oxygen-absorbing layer containing an oxygen-absorbing composition and a thermoplastic resin layer containing a thermoplastic resin (b), wherein the oxygen-absorbing composition includes at least one compound having a tetralin ring represented by Formula (1), a transition metal catalyst, and a thermoplastic resin (a).Type: GrantFiled: March 6, 2014Date of Patent: July 31, 2018Assignee: MITSUBISHI HAS CHEMICAL COMPANY, INC.Inventors: Satoshi Okada, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Takashi Kashiba, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
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Patent number: 9994382Abstract: Provided is an oxygen-absorbing medical multilayer container including at least three layers including a first resin layer containing a thermoplastic resin (b1), an oxygen-absorbing layer containing an oxygen-absorbing composition, and a second resin layer containing a thermoplastic resin (b2), in this order, where the oxygen-absorbing composition contains at least one compound having a tetralin ring represented by Formula (1), a transition metal catalyst, and a thermoplastic resin (a).Type: GrantFiled: March 6, 2014Date of Patent: June 12, 2018Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Takashi Kashiba, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
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Patent number: 9840359Abstract: Provided are a novel oxygen-absorbing resin composition not responsive to a metal detector, producing no odor after absorption of oxygen and having excellent oxygen-absorbing performance, and a multilayer body, container, injection-molded article and medical container using these. Further provided are an oxygen-absorbing resin composition etc. having excellent oxygen-absorbing performance in a wide range of humidity conditions from low humidity to high humidity. The oxygen-absorbing resin composition of the present invention is an oxygen-absorbing resin composition containing a polyamide compound and a transition metal catalyst, wherein the polyamide compound has at least one constituent unit having a tetralin ring. Moreover, the multilayer body, container, injection-molded article, medical container, etc. of the present invention are obtained by using the oxygen-absorbing resin composition of the present invention.Type: GrantFiled: December 17, 2012Date of Patent: December 12, 2017Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
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Patent number: 9732167Abstract: Provided is a novel oxygen-absorbing resin composition having excellent oxygen-absorbing performance and suppressing odor generation after absorption of oxygen even if a material responsive to a metal detector is not used. Further provided is an oxygen-absorbing resin composition having excellent oxygen-absorbing performance in a wide range of humidity conditions from low humidity to high humidity. Such an oxygen-absorbing resin composition contains a copolymerized polyolefin compound and a transition metal catalyst, in which the copolymerized polyolefin compound contains at least one constituent unit having a tetralin ring.Type: GrantFiled: February 8, 2013Date of Patent: August 15, 2017Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
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Patent number: 9731482Abstract: A multilayer injection molded article containing a layer (X) formed of a resin composition containing a polyamide compound (A) and a resin (B), and a layer (Y) containing a resin (C) as a major component, wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.Type: GrantFiled: June 19, 2012Date of Patent: August 15, 2017Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota Arakawa, Takafumi Oda, Ryoji Otaki, Kentaro Ishii
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Patent number: 9718259Abstract: A multilayer injection molded article containing a layer (A) containing a polyamide resin (A), and a layer (B) containing a resin (B) as a major component, wherein the polyamide resin (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.Type: GrantFiled: June 19, 2012Date of Patent: August 1, 2017Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota Arakawa, Takafumi Oda, Ryoji Otaki, Kentaro Ishii
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Patent number: 9718955Abstract: An injection molded article containing a resin composition containing a polyamide compound (A) and a resin (B), wherein the polyamide compound (A) contains from 25 to 50% by mol of a diamine unit, which contains a particular diamine unit, in an amount of 50% by mol or more; from 25 to 50% by mol of a dicarboxylic acid unit, which contains a particular dicarboxylic acid unit, in an amount of 50% by mol or more; and from 0.1 to 50% by mol of a particular constitutional unit.Type: GrantFiled: June 19, 2012Date of Patent: August 1, 2017Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota Arakawa, Takafumi Oda, Ryoji Otaki, Kentaro Ishii
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Publication number: 20170137203Abstract: An oxygen absorbing multilayer container having at least three layers of a first resin layer containing a thermoplastic resin, an oxygen absorbing layer containing an oxygen absorbing resin composition which contains a polyester compound (a) containing a constituent unit having a tetralin ring and a transition metal catalyst, and a second resin layer containing the same type of thermoplastic resin as the thermoplastic resin contained in the first resin layer, in this order, in which a cycloolefin polymer having a glass transition temperature of 50 to 110° C. is contained as the thermoplastic resin.Type: ApplicationFiled: March 25, 2015Publication date: May 18, 2017Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Shota ARAKAWA, Takashi KASHIBA
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Publication number: 20150368023Abstract: Provided is an oxygen-absorbing medical multilayer container including at least three layers including a first resin layer containing a thermoplastic resin (b1), an oxygen-absorbing layer containing an oxygen-absorbing composition, and a second resin layer containing a thermoplastic resin (b2), in this order, where the oxygen-absorbing composition contains at least one compound having a tetralin ring represented by Formula (1), a transition metal catalyst, and a thermoplastic resin (a).Type: ApplicationFiled: March 6, 2014Publication date: December 24, 2015Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Takashi KASHIBA, Shun OGAWA, Shota ARAKAWA, Kenichiro USUDA
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Publication number: 20150368022Abstract: Provided is an oxygen-absorbing multilayer body including an oxygen-absorbing layer containing an oxygen-absorbing composition and a thermoplastic resin layer containing a thermoplastic resin (b), wherein the oxygen-absorbing composition includes at least one compound having a tetralin ring represented by Formula (1), a transition metal catalyst, and a thermoplastic resin (a).Type: ApplicationFiled: March 6, 2014Publication date: December 24, 2015Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Satoshi OKADA, Shinpei IWAMOTO, Shinichi IKEDA, Fumihiro ITO, Takashi KASHIBA, Shun OGAWA, Shota ARAKAWA, Kenichiro USUDA
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Publication number: 20150298887Abstract: Provided are a novel oxygen-absorbing resin composition not responsive to a metal detector, producing no odor after absorption of oxygen and having excellent oxygen-absorbing performance, and a multilayer body, container, injection-molded article and medical container using these. Further provided are an oxygen-absorbing resin composition etc. having excellent oxygen-absorbing performance in a wide range of humidity conditions from low humidity to high humidity. The oxygen-absorbing resin composition of the present invention is an oxygen-absorbing resin composition containing a polyamide compound and a transition metal catalyst, wherein the polyamide compound has at least one constituent unit having a tetralin ring. Moreover, the multilayer body, container, injection-molded article, medical container, etc. of the present invention are obtained by using the oxygen-absorbing resin composition of the present invention.Type: ApplicationFiled: December 17, 2012Publication date: October 22, 2015Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
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Publication number: 20140373485Abstract: Provided is a novel oxygen-absorbing resin composition having excellent oxygen-absorbing performance and suppressing odor generation after absorption of oxygen even if a material responsive to a metal detector is not used. Further provided is an oxygen-absorbing resin composition having excellent oxygen-absorbing performance in a wide range of humidity conditions from low humidity to high humidity. Such an oxygen-absorbing resin composition contains a copolymerized polyolefin compound and a transition metal catalyst, in which the copolymerized polyolefin compound contains at least one constituent unit having a tetralin ring.Type: ApplicationFiled: February 8, 2013Publication date: December 25, 2014Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
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Publication number: 20140370219Abstract: Provided are a medical packaging container having a polyester resin (A1) including diol units and dicarboxylic units, the diol units including at least one diol unit in an amount of 1 to 30 mol % selected from diol units having a bridged alicyclic skeleton derived from a compound represented by formula (1), formula (2), or formula (3), the dicarboxylic acid units including dicarboxylic acid units having a naphthalene skeleton in an amount of 70 mol % or more; and a manufacturing method of the polyester for the container.Type: ApplicationFiled: October 5, 2012Publication date: December 18, 2014Inventors: Shun Ogawa, Takeshi Hirokane, Takashi Kashiba, Shota Arakawa, Kenichiro Usuda
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Publication number: 20140308405Abstract: A novel oxygen-absorbing resin composition is not responsive to a metal detector, produces no odor after absorption of oxygen and has excellent oxygen-absorbing performance, and an oxygen-absorbing molded article, and a multilayer body, container, injection-molded article and medical container. Further provided are an oxygen-absorbing resin composition etc. having excellent oxygen-absorbing performance in a wide range of humidity conditions from low to high humidity. The oxygen-absorbing resin composition is an oxygen-absorbing resin composition containing a polyester compound and a transition metal catalyst, in which the polyester compound has at least one constituent unit having a tetralin ring. Furthermore, the oxygen-absorbing molded article of the present invention is formed by molding the oxygen-absorbing resin composition into a film form or a sheet form. Moreover, the multilayer body, container, injection-molded article, medical container, etc.Type: ApplicationFiled: November 22, 2012Publication date: October 16, 2014Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda