Patents by Inventor Shinpei Iwamoto

Shinpei Iwamoto 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).

  • Patent number: 10150107
    Abstract: Oxygen-absorbing resin composition comprising a polyester containing a constitutional unit (a) comprising tetralin ring structure, for example, an alkyl tetralin dicarboxylate, wherein the alkyl component has, for example, from 2 to 6 carbon atoms, and a constitutional unit (b) derived from a polyfunctional compound, selected from glycerin, trimethylol propane, pentaerythritol, trimellitic acid, trimellitic acid anhydride, pyromellitic acid, and pyromellitic acid anhydride, and a transition metal catalyst.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: December 11, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinpei Iwamoto, Satoshi Okada, Shinichi Ikeda, Fumihiro Ito
  • Patent number: 10035640
    Abstract: 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: Grant
    Filed: March 6, 2014
    Date of Patent: July 31, 2018
    Assignee: MITSUBISHI HAS CHEMICAL COMPANY, INC.
    Inventors: Satoshi Okada, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Takashi Kashiba, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
  • Patent number: 10035129
    Abstract: 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: Grant
    Filed: November 22, 2012
    Date of Patent: July 31, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
  • Patent number: 10035879
    Abstract: An oxygen-absorbing resin composition containing a polyester compound, and a transition metal catalyst, and wherein the polyester compound is a polyester compound having a tetralin ring obtained by synthesis using a zinc compound contained in a catalyst; the zinc compound contained in a catalyst is present together with the obtained polyester compound in the oxygen-absorbing resin composition; the transition metal catalyst is different from the zinc compound contained in a catalyst; and the oxygen-absorbing resin composition is obtained by mixing the transition metal catalyst with the polyester compound present together with the zinc compound contained in a catalyst.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: July 31, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinpei Iwamoto, Satoshi Okada, Shinichi Ikeda, Fumihiro Ito
  • Patent number: 9868579
    Abstract: The present invention provides an oxygen absorbing agent composition comprising a compound (A) having two or more tetralin rings, and a transition metal catalyst.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: January 16, 2018
    Assignee: MITSIBISHI HAS CHEMICAL COMPANY, INC.
    Inventors: Shinichi Ikeda, Satoshi Okada, Shinpei Iwamoto
  • Patent number: 9840359
    Abstract: 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: Grant
    Filed: December 17, 2012
    Date of Patent: December 12, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
  • Patent number: 9840360
    Abstract: An oxygen absorbent composition which comprises a polyester oligomer containing a constitutional unit derived from a tetralin ring-containing carboxylic acid and a diol, wherein the polyester oligomer has a number average molecular weight of 500 to 10000, and a transition metal catalyst comprising at least one transition metal selected from the group consisting of manganese, iron, cobalt, nickel and copper.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: December 12, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Fumihiro Ito, Satoshi Okada, Shinpei Iwamoto, Shinichi Ikeda
  • Patent number: 9771203
    Abstract: An oxygen absorbing agent composition including at least one type of a compound having an indane skeleton represented by the following general formula (1) and a transition metal catalyst:
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: September 26, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Satoshi Okada, Shinichi Ikeda, Kenichiro Usuda, Shinpei Iwamoto
  • Patent number: 9732167
    Abstract: 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: Grant
    Filed: February 8, 2013
    Date of Patent: August 15, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Fumihiro Ito, Shun Ogawa, Shota Arakawa, Kenichiro Usuda
  • Patent number: 9670408
    Abstract: The provision of an oxygen absorbent composition comprising a compound (A) having two or more tetralin rings, at least one of the tetralin rings having a hydrogen bond bonded to a benzylic position thereof, and having two or more imide bonds, and a transition metal catalyst.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 6, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinichi Ikeda, Satoshi Okada, Shinpei Iwamoto, Fumihiro Ito
  • Patent number: 9637604
    Abstract: The present invention provides a sterilized oxygen-absorbing resin composition obtained by performing at least: a sterilizing step of irradiating with radiation an oxygen-absorbing resin composition containing a transition metal catalyst and a thermoplastic resin (a) having a tetralin ring as a constituent unit; and a step of heating the oxygen-absorbing resin composition at a temperature equal to or higher than the glass transition temperature of the thermoplastic resin (a) and equal to or lower than 200° C., after the sterilizing step.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: May 2, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Fumihiro Ito, Satoshi Okada, Shinpei Iwamoto
  • Patent number: 9630764
    Abstract: An oxygen-absorbing resin composition copolymerized polyolefin compound including a copolymerized polyolefin compound and a transition metal catalyst, wherein the copolymerized polyolefin compound is a copolymerized polyolefin compound including at least one of constitutional unit (a) selected from the group consisting of the constitutional units represented by the general formula (1), and at least one of the constitutional unit (b) having an indane ring, selected from the group consisting of the constitutional units represented by the general formulas (2) and (3).
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: April 25, 2017
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinpei Iwamoto, Satoshi Okada, Shinichi Ikeda
  • Publication number: 20170009035
    Abstract: The present invention provides a sterilized oxygen-absorbing resin composition obtained by performing at least: a sterilizing step of irradiating with radiation an oxygen-absorbing resin composition containing a transition metal catalyst and a thermoplastic resin (a) having a tetralin ring as a constituent unit; and a step of heating the oxygen-absorbing resin composition at a temperature equal to or higher than the glass transition temperature of the thermoplastic resin (a) and equal to or lower than 200° C., after the sterilizing step.
    Type: Application
    Filed: February 6, 2015
    Publication date: January 12, 2017
    Inventors: Fumihiro ITO, Satoshi OKADA, Shinpei IWAMOTO
  • Patent number: 9518148
    Abstract: An oxygen-absorbing resin composition comprising a polyester compound having a constitutional unit (a), which has at least one tetralin ring selected from the group consisting of the following general formulas (1) to (4) and a constitutional unit (b) comprising residue of tetrahydrophthalic anhydride derivative which is represented by the following general formula (5) and/or general formula (6).
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: December 13, 2016
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinpei Iwamoto, Satoshi Okada, Shinichi Ikeda, Kenichiro Usuda
  • Patent number: 9428692
    Abstract: The present invention provides a novel oxygen absorbent composition being capable of realizing an oxygen absorbent not responding to a metal detector, being suppressed in the increase of the odor intensity after the absorption of oxygen and having an excellent oxygen absorption performance over a wide range of humidity conditions from low humidity to high humidity, and provides an oxygen absorbent package using the oxygen absorbent composition.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: August 30, 2016
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Satoshi Okada, Toshiya Takagi, Takashi Kashiba, Shinpei Iwamoto, Shinichi Ikeda, Kenichiro Usuda
  • Patent number: 9260596
    Abstract: Provided is a resin composition which is excellent in an oxygen-absorbing performance, a resin strength and a resin processability. The oxygen-absorbing resin composition is characterized by containing a polyolefin resin, a transition metal catalyst and a polyamide resin obtained by polycondensation of aromatic diamine and dicarboxylic acid, wherein an end amino group concentration of the above polyamide resin is 30 ?eq/g or less, and a total content of the transition metal catalyst and the polyamide resin is 15 to 60% by weight based on a whole amount of the oxygen-absorbing resin composition.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: February 16, 2016
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Takashi Kashiba, Satoshi Okada, Shinpei Iwamoto, Akihiro Masuda, Kiyonori Michiba
  • Publication number: 20160031628
    Abstract: The oxygen absorbent composition of the present invention at least contains a polyester oligomer containing a constitutional unit having a predetermined tetralin ring and a transition metal catalyst. It is preferable that the oxygen absorbent composition of the present invention further contains a thermoplastic resin.
    Type: Application
    Filed: March 5, 2014
    Publication date: February 4, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Fumihiro ITO, Satoshi OKADA, Shinpei IWAMOTO, Shinichi IKEDA
  • Publication number: 20160017092
    Abstract: An oxygen-absorbing resin composition containing a polyester compound and a transition metal catalyst, wherein the polyester compound has at least one constituent unit having a tetralin ring selected from the group consisting of constituent units represented by general formulas (1) to (4) and wherein the polyester compound is a polyester compound having a tetralin ring obtained by synthesis using a zinc compound.
    Type: Application
    Filed: March 5, 2014
    Publication date: January 21, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinpei IWAMOTO, Satoshi OKADA, Shinichi IKEDA, Fumihiro ITO
  • Publication number: 20160009993
    Abstract: The provision of an oxygen absorbent composition comprising a compound (A) having two or more tetralin rings, at least one of the tetralin rings having a hydrogen bond bonded to a benzylic position thereof, and having two or more imide bonds, and a transition metal catalyst.
    Type: Application
    Filed: March 6, 2014
    Publication date: January 14, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinichi IKEDA, Satoshi OKADA, Shinpei IWAMOTO, Fumihiro ITO
  • Publication number: 20160008800
    Abstract: The oxygen-absorbing resin composition of the present invention at least contains a polyester compound containing a constitutional unit (a) having a predetermined tetralin ring and a constitutional unit (b) derived from a predetermined polyfunctional (trivalent or more) compound, and a transition metal catalyst.
    Type: Application
    Filed: March 5, 2014
    Publication date: January 14, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shinpei IWAMOTO, Satoshi OKADA, Shinichi IKEDA, Fumihiro ITO