Patents by Inventor Takuzo Aida

Takuzo Aida 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: 10655000
    Abstract: An organic/inorganic composite hydrogel can be prepared only through mixing at a room temperature and that has high modulus of elasticity and a self-supporting property that allows a shape to be maintained in water, and a method produces the hydrogel. A hydrogel forming composition that is capable of forming a hydrogel having a self-supporting property, includes: a water-soluble organic polymer having an organic acid structure, an organic acid salt structure, or an organic acid anion structure; a silicate salt; a dispersant for the silicate salt; and a compound having or generating divalent or higher valent positive charge; a hydrogel formed of the composition, and a method for producing the hydrogel.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: May 19, 2020
    Assignees: NISSAN CHEMICAL INDUSTRIES, LTD., RIKEN
    Inventors: Yoshihiro Kudo, Taichi Nakazawa, Takuzo Aida, Yasuhiro Ishida, Shingo Tamesue, Masataka Ohtani
  • Patent number: 10252253
    Abstract: In order to provide g-C3N4 capable of being simply and easily handled, a g-C3N4 film is produced by heating, as a starting material, a compound represented by X+mYm?, wherein X+ is a guanidium ion or the like ion, and Ym? is an anion, to vaporize the compound or its reactant, and depositing the compound or the reactant over a surface of a base material heated, the surface carrying negative electric charges or having ? electrons, so that the compound or the reactant is polymerized on the base material to generate g-C3N4.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: April 9, 2019
    Assignee: RIKEN
    Inventors: Daigo Miyajima, Hiroki Arazoe, Masuki Kawamoto, Kouki Akaike, Yoshiko Koizumi, Takuzo Aida
  • Patent number: 10030155
    Abstract: An ionic liquid can disperse graphene at a high concentration. The ionic liquid can be represented by general formula (1): in which R1 and R5 may be the same or different and each independently represents a substituted or unsubstituted C1-7 linear or branched alkyl group; R2 is represented by formula (2): in which R6 and R7 may be the same or different and each independently represents a C1-4 linear or branched alkylene group, and m represents an integer of 1-5; R3 and R4 may be the same or different and each independently represent a hydrogen atom, substituted or unsubstituted C1-4 linear or branched alkyl group; X? represents a counter ion; and n represents 0-30.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: July 24, 2018
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: Takuzo Aida, Chiyoung Park, Saisuwan Ravi, Michio Matsumoto
  • Patent number: 10031241
    Abstract: A radiation dosimetry gel is excellent in heat resistance, and a radiation dosimeter includes the radiation dosimetry gel as a material for measuring a radiation dose. A radiation dosimetry gel includes a water-soluble organic polymer (A) having an organic acid salt structure or an organic acid anion structure, a silicate (B), and a dispersant (C) for the silicate, and a radiation dosimeter includes the radiation dosimetry gel as a material for measuring a radiation dose.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: July 24, 2018
    Assignees: RIKEN, NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Takuya Maeyama, Nobuhisa Fukunishi, Kenichi Ishikawa, Yasuhiro Ishida, Takuzo Aida, Kazuaki Fukasaku, Yoshihiro Kudo, Souichi Monma
  • Publication number: 20170350989
    Abstract: A radiation dosimetry gel is excellent in heat resistance, and a radiation dosimeter includes the radiation dosimetry gel as a material for measuring a radiation dose. A radiation dosimetry gel includes a water-soluble organic polymer (A) having an organic acid salt structure or an organic acid anion structure, a silicate (B), and a dispersant (C) for the silicate, and a radiation dosimeter includes the radiation dosimetry gel as a material for measuring a radiation dose.
    Type: Application
    Filed: December 18, 2015
    Publication date: December 7, 2017
    Applicants: RIKEN, NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Takuya MAEYAMA, Nobuhisa FUKUNISHI, Kenichi ISHIKAWA, Yasuhiro ISHIDA, Takuzo AIDA, Kazuaki FUKASAKU, Yoshihiro KUDO, Souichi MONMA
  • Patent number: 9611410
    Abstract: An adhesive resin composition includes an expandable sticky polymer having a structure derived from a Meldrum's acid derivative, or a Meldrum's acid derivative represented by the following general formula (1) and an adhesive resin.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 4, 2017
    Assignee: MITSUI CHEMICALS TOHCELLO, INC.
    Inventors: Shinichi Usugi, Noboru Kawasaki, Jun Kamada, Takuzo Aida
  • Patent number: 9481771
    Abstract: There is provided a method for bonding together hydrogels by interposing a polyalkylene glycol between the gel surfaces to be bonded together of hydrogels. A method for bonding together hydrogels of the same type or different types, the method including: interposing a polyalkylene glycol between gel surfaces to be bonded together of the hydrogels and joining together the gel surfaces.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: November 1, 2016
    Assignees: RIKEN, NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Shingo Tamesue, Yasuhiro Ishida, Masataka Ohtani, Takuzo Aida, Yoshihiro Kudo, Taichi Nakazawa
  • Publication number: 20160272806
    Abstract: An organic/inorganic composite hydrogel can be prepared only through mixing at a room temperature and that has high modulus of elasticity and a self-supporting property that allows a shape to be maintained in water, and a method produces the hydrogel. A hydrogel forming composition that is capable of forming a hydrogel having a self-supporting property, includes: a water-soluble organic polymer having an organic acid structure, an organic acid salt structure, or an organic acid anion structure; a silicate salt; a dispersant for the silicate salt; and a compound having or generating divalent or higher valent positive charge; a hydrogel formed of the composition, and a method for producing the hydrogel.
    Type: Application
    Filed: November 10, 2014
    Publication date: September 22, 2016
    Applicants: NISSAN CHEMICAL INDUSTRIES, LTD., RIKEN
    Inventors: Yoshihiro KUDO, Taichi NAKAZAWA, Takuzo AIDA, Yasuhiro ISHIDA, Shingo TAMESUE, Masataka OHTANI
  • Patent number: 9249275
    Abstract: Provided is a hydrogel which includes water as the main component at a high water content and has mechanical strength suitable for practical use and which exhibits high transparency and self-healing and shape-retaining properties. Also provided are both a material for the hydrogel and a novel polyionic dendrimer. A polyionic dendrimer which includes a hydrophilic linear polymer as the core and polyester dendrons attached to both terminals of the linear polymer and in which cationic groups are bonded to the surfaces of the dendrons, the cationic groups being selected from the group consisting of guanidine group, thiourea group, and isothiourea group; a material for a hydrogel, which includes the polyionic dendrimer and clay; and a hydrogel prepared using the material.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: February 2, 2016
    Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Justin Mynar, Takuzo Aida
  • Patent number: 9243115
    Abstract: There is provided a hydrogel having a self-supporting property that can be produced only through mixing at room temperature, and there is provided a method by which the hydrogel can be manufactured by using industrially easily available raw materials. A hydrogel-forming composition that is capable of forming a hydrogel having a self-supporting property, the hydrogel-forming composition characterized by including: a water-soluble organic polymer having an organic acid salt structure or an organic acid anion structure; a silicate salt; and a dispersant for the silicate salt, having a weight average molecular weight of 200 to 20,000 and having hydrolysis resistance.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: January 26, 2016
    Assignees: NISSAN CHEMICAL INDUSTRIES, LTD., RIKEN
    Inventors: Yoshihiro Kudo, Taichi Nakazawa, Takuzo Aida, Yasuhiro Ishida, Shingo Tamesue, Masataka Ohtani
  • Patent number: 9238718
    Abstract: There is provided a self-supporting hydrogel that can be produced only through mixing at room temperature and that has a high mechanical strength. A hydrogel forming composition that is capable of forming a hydrogel having a self-supporting property, the hydrogel forming composition characterized by including: a water-soluble organic polymer having an organic acid salt structure or an organic acid anion structure; a silicate salt; a dispersant for the silicate salt; and a polyhydric alcohol, and having an extremely high mechanical strength.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: January 19, 2016
    Assignees: NISSAN CHEMICAL INDUSTRIES, LTD., RIKEN
    Inventors: Yoshihiro Kudo, Taichi Nakazawa, Takuzo Aida, Yasuhiro Ishida, Shingo Tamesue, Masataka Ohtani
  • Publication number: 20150352539
    Abstract: In order to provide g-C3N4 capable of being simply and easily handled, a g-C3N4 film is produced by heating, as a starting material, a compound represented by X+mYm?, wherein X+ is a guanidium ion or the like ion, and Ym? is an anion, to vaporize the compound or its reactant, and depositing the compound or the reactant over a surface of a base material heated, the surface carrying negative electric charges or having ? electrons, so that the compound or the reactant is polymerized on the base material to generate g-C3N4.
    Type: Application
    Filed: December 24, 2013
    Publication date: December 10, 2015
    Inventors: Daigo Miyajima, Hiroki Arazoe, Masuki Kawamoto, Kouki Akaike, Yoshiko Koizumi, Takuzo Aida
  • Publication number: 20150274899
    Abstract: There is provided a self-supporting hydrogel that can be produced only through mixing at room temperature and that has a high mechanical strength. A hydrogel forming composition that is capable of forming a hydrogel having a self-supporting property, the hydrogel forming composition characterized by including: a water-soluble organic polymer having an organic acid salt structure or an organic acid anion structure; a silicate salt; a dispersant for the silicate salt; and a polyhydric alcohol, and having an extremely high mechanical strength.
    Type: Application
    Filed: September 18, 2013
    Publication date: October 1, 2015
    Inventors: Yoshihiro Kudo, Taichi Nakazawa, Takuzo Aida, Yasuhiro Ishida, Shingo Tamesue, Masataka Ohtani
  • Publication number: 20150267007
    Abstract: There is provided a hydrogel having a self-supporting property that can be produced only through mixing at room temperature, and there is provided a method by which the hydrogel can be manufactured by using industrially easily available raw materials. A hydrogel-forming composition that is capable of forming a hydrogel having a self-supporting property, the hydrogel-forming composition characterized by including: a water-soluble organic polymer having an organic acid salt structure or an organic acid anion structure; a silicate salt; and a dispersant for the silicate salt, having a weight average molecular weight of 200 to 20,000 and having hydrolysis resistance.
    Type: Application
    Filed: September 18, 2013
    Publication date: September 24, 2015
    Inventors: Yoshihiro Kudo, Taichi Nakazawa, Takuzo Aida, Yasuhiro Ishida, Shingo Tamesue, Masataka Ohtani
  • Publication number: 20150225519
    Abstract: There is provided a method for bonding together hydrogels by interposing a polyalkylene glycol between the gel surfaces to be bonded together of hydrogels. A method for bonding together hydrogels of the same type or different types, the method including: interposing a polyalkylene glycol between gel surfaces to be bonded together of the hydrogels and joining together the gel surfaces.
    Type: Application
    Filed: September 18, 2013
    Publication date: August 13, 2015
    Applicant: RIKEN
    Inventors: Shingo Tamesue, Yasuhiro Ishida, Masataka Ohtani, Takuzo Aida, Yoshihiro Kudo, Taichi Nakazawa
  • Publication number: 20150137027
    Abstract: An ionic liquid can disperse graphene at a high concentration. The ionic liquid can be represented by general formula (1): in which R1 and R5 may be the same or different and each independently represents a substituted or unsubstituted C1-7 linear or branched alkyl group; R2 is represented by formula (2): in which R6 and R7 may be the same or different and each independently represents a C1-4 linear or branched alkylene group, and m represents an integer of 1-5; R3 and R4 may be the same or different and each independently represent a hydrogen atom, substituted or unsubstituted C1-4 linear or branched alkyl group; X? represents a counter ion; and n represents 0-30.
    Type: Application
    Filed: May 14, 2013
    Publication date: May 21, 2015
    Inventors: Takuzo Aida, Chiyoung Park, Saisuwan Ravi, Michio Matsumoto
  • Publication number: 20140322474
    Abstract: An adhesive resin composition of the present invention includes an expandable sticky polymer having a structure derived from a Meldrum's acid derivative, or a Meldrum's acid derivative represented by the following general formula (1) and an adhesive resin.
    Type: Application
    Filed: December 7, 2012
    Publication date: October 30, 2014
    Inventors: Shinichi Usugi, Noboru Kawasaki, Jun Kamada, Takuzo Aida
  • Publication number: 20140221292
    Abstract: Provided is a hydrogel which comprises water as the main component at a high water content and has mechanical strength suitable for practical use and which exhibits high transparency and self-healing and shape-retaining properties. Also provided are both a material for the hydrogel and a novel polyionic dendrimer. A polyionic dendrimer which comprises a hydrophilic linear polymer as the core and polyester dendrons attached to both terminals of the linear polymer and in which cationic groups are bonded to the surfaces of the dendrons, said cationic groups being selected from the group consisting of guanidine group, thiourea group, and isothiourea group; a material for a hydrogel, which comprises the polyionic dendrimer and clay; and a hydrogel prepared using the material.
    Type: Application
    Filed: April 14, 2014
    Publication date: August 7, 2014
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Justin Mynar, Takuzo Aida
  • Patent number: 8722809
    Abstract: The present invention provides a preparation process for converting to a vinylidene fluoride elastomer having a group having sulfinic acid, sulfinic acid derivative, sulfonic acid or sulfonic acid derivative at one end or both ends of its trunk chain, and the preparation process provides a vinylidene fluoride elastomer having, at one end or both ends of its trunk chain, end groups represented by the formula: —CR1R2—CR3R4—SO2H, wherein R1 to R4 may be the same or different and each is hydrogen atom or fluorine atom, by allowing a vinylidene fluoride elastomer having, at one end or both ends of its trunk chain, end groups represented by the formula: —CR1R2—CR3R4—X1, wherein R1 to R4 are as defined above, X1 is bromine atom or iodine atom, to react with a sulfur compound represented by the formula: (M1)nH2-nS2O4, wherein M1 is a monovalent or divalent metal ion or ammonium ion, n is an integer of 0 to 2.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: May 13, 2014
    Assignees: The University of Tokyo, Daikin Industries, Ltd.
    Inventors: Yuzo Komatsu, Haruhiko Mohri, Hirokazu Aoyama, Takanori Fukushima, Takuzo Aida
  • Publication number: 20120101041
    Abstract: Provided is a hydrogel which comprises water as the main component at a high water content and has mechanical strength suitable for practical use and which exhibits high transparency and self-healing and shape-retaining properties. Also provided are both a material for the hydrogel and a novel polyionic dendrimer. A polyionic dendrimer which comprises a hydrophilic linear polymer as the core and polyester dendrons attached to both terminals of the linear polymer and in which cationic groups are bonded to the surfaces of the dendrons, said cationic groups being selected from the group consisting of guanidine group, thiourea group, and isothiourea group; a material for a hydrogel, which comprises the polyionic dendrimer and clay; and a hydrogel prepared using the material.
    Type: Application
    Filed: June 28, 2010
    Publication date: April 26, 2012
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Justin Mynar, Takuzo Aida