Patents by Inventor Takashi Hujie

Takashi Hujie 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).

  • Thermo-expansive microcapsules and their application
    Patent number: 6984347
    Abstract: Thermo-expansive microcapsules comprising a shell of a polymer produced by polymerizing a mixture of monomers, which comprises (I) a nitrile monomer, (II) a monomer having an unsaturated double bond and carboxyl groups in a molecule, (III) a monomer having two or more of polymerizable double bonds in a molecule, and optionally, (IV) a monomer different from and copolymerizable with the monomers (I), (II) and (III) and a blowing agent encapsulated in the shell. The volume retention of the expanded microcapsules of the thermo-expansive microcapsules is 50% or more after loaded with 15 MPa.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: January 10, 2006
    Assignee: Matsumoto Yushi-Seiyaku Co., Ltd.
    Inventors: Toshiaki Masuda, Ichiro Takahara, Takashi Hujie, Yoshiaki Shirakabe, Katsushi Miki
  • Thermo-expansive microcapsules and their application
    Publication number: 20050026067
    Abstract: Thermo-expansive microcapsules comprising a shell of a polymer produced by polymerizing a mixture of monomers, which comprises (I) a nitrile monomer, (II) a monomer having an unsaturated double bond and carboxyl groups in a molecule, (III) a monomer having two or more of polymerizable double bonds in a molecule, and optionally, (IV) a monomer different from and copolymerizable with the monomers (I), (II) and (III) and a blowing agent encapsulated in the shell. The volume retention of the expanded microcapsules of the thermo-expansive microcapsules is 50% or more after loaded with 15 MPa.
    Type: Application
    Filed: August 24, 2004
    Publication date: February 3, 2005
    Applicant: Matsumoto Yushi-Seiyaku Co., Ltd.
    Inventors: Toshiaki Masuda, Ichiro Takahara, Takashi Hujie, Yoshiaki Shirakabe, Katsushi Miki