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).

  • Patent number: 8835595
    Abstract: A polyamide compound containing: from 25 to 50 mol % of a diamine unit, which contains an aromatic diamine unit represented by the following formula (I), in an amount of 50 mol % or more; from 25 to 50 mol % of a dicarboxylic acid unit, which contains a linear aliphatic dicarboxylic acid unit represented by the following formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following formula (II-2), in an amount in total of 50 mol % or more; and from 0.1 to 50 mol % of a constitutional unit represented by the following formula (III): wherein n represents an integer of from 2 to 18, Ar represents an arylene group, and R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: September 16, 2014
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takafumi Oda, Ryoji Otaki, Shota Arakawa, Tsuneaki Masuda, Hiroyuki Matsushita, Ryuji Hasemi
  • Patent number: 8822630
    Abstract: A polyamide composition containing a polyamide compound (A) and a transition metal compound (B), wherein the polyamide compound (A) contains: from 25 to 50 mol % of a diamine unit, which contains at least one diamine unit selected from the group consisting of an aromatic diamine unit represented by the following formula (I-1), an alicyclic diamine unit represented by the following formula (I-2) and a linear aliphatic diamine unit represented by the following formula (I-3), in an amount in total of 50% by mol or more; from 25 to 50 mol % of a dicarboxylic acid unit, which contains a linear aliphatic dicarboxylic acid unit represented by the following formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following formula (II-2), in an amount in total of 50% by mol or more; and from 0.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 2, 2014
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takafumi Oda, Ryoji Otaki, Kentaro Ishii, Shota Arakawa
  • Publication number: 20140220274
    Abstract: A film containing a layer formed from 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: Application
    Filed: June 19, 2012
    Publication date: August 7, 2014
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY INC.
    Inventors: Takafumi Oda, Ryoji Otaki, Kentaro Ishii, Shota Arakawa
  • Publication number: 20140127433
    Abstract: 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: Application
    Filed: June 19, 2012
    Publication date: May 8, 2014
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shota Arakawa, Takafumi Oda, Ryoji Otaki, Kentaro Ishii
  • Publication number: 20140117280
    Abstract: An oxygen absorber is provided that contains at least one of compounds each having a particular structure, and the oxygen absorber exhibits an oxygen absorbing capability without a metal contained, and is suitable for removing oxygen inside a packaging material packaging foods or the like.
    Type: Application
    Filed: May 16, 2012
    Publication date: May 1, 2014
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kentaro Ishii, Ryoji Otaki, Takafumi Oda, Shota Arakawa
  • Publication number: 20140120289
    Abstract: 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: Application
    Filed: June 19, 2012
    Publication date: May 1, 2014
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shota Arakawa, Takafumi Oda, Ryoji Otaki, Kentaro Ishii
  • Publication number: 20140106103
    Abstract: 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: Application
    Filed: June 19, 2012
    Publication date: April 17, 2014
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Shota Arakawa, Takafumi Oda, Ryoji Otaki, Kentaro Ishii
  • Publication number: 20130303367
    Abstract: A polyamide composition containing a polyamide compound (A) and a transition metal compound (B), wherein the polyamide compound (A) contains: from 25 to 50 mol % of a diamine unit, which contains at least one diamine unit selected from the group consisting of an aromatic diamine unit represented by the following formula (I-1), an alicyclic diamine unit represented by the following formula (I-2) and a linear aliphatic diamine unit represented by the following formula (I-3), in an amount in total of 50% by mol or more; from 25 to 50 mol % of a dicarboxylic acid unit, which contains a linear aliphatic dicarboxylic acid unit represented by the following formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following formula (II-2), in an amount in total of 50% by mol or more; and from 0.
    Type: Application
    Filed: December 20, 2011
    Publication date: November 14, 2013
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC
    Inventors: Takafumi Oda, Ryoji Otaki, Kentaro Ishii, Shota Arakawa
  • Publication number: 20120302723
    Abstract: A polyamide compound containing: from 25 to 50 mol % of a diamine unit, which contains an aromatic diamine unit represented by the following formula (I), in an amount of 50 mol % or more; from 25 to 50 mol % of a dicarboxylic acid unit, which contains a linear aliphatic dicarboxylic acid unit represented by the following formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following formula (II-2), in an amount in total of 50 mol % or more; and from 0.1 to 50 mol % of a constitutional unit represented by the following formula (III): wherein n represents an integer of from 2 to 18, Ar represents an arylene group, and R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.
    Type: Application
    Filed: December 24, 2010
    Publication date: November 29, 2012
    Inventors: Takafumi Oda, Ryoji Otaki, Shota Arakawa, Tsuneaki Masuda, Hiroyuki Matsushita, Ryuji Hasemi