Patents by Inventor Tatsuto Yui

Tatsuto Yui 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).

  • Water-soluble near-infrared absorbing coloring matters and aqueous inks containing same
    Patent number: 8404036
    Abstract: Coloring matters represented by general formula (1) or salts thereof are simply provided at a low cost as water-soluble coloring matters which exhibit absorption in the near-infrared region. Further, aqueous ink compositions which contain the coloring matters and have excellent storage stability are also provided. In general formula (1), Nc is optionally substituted naphthalocyanine; M is a metal oxide or the like; R1 and R2 are each independently hydrogen or the like; A is a crosslinking group; X and Y are each independently substituted arylamino or the like; k is more than 0 but up to 12 (on average); p is 0 to less than 12; the sum of k and p is more than 0 but up to 12; and any two or the three of R1, R2 and A may be united to form a ring.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: March 26, 2013
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Koji Hirota, Takafumi Fujii, Tatsuto Yui
  • Field-effect transistor
    Patent number: 8124964
    Abstract: Disclosed is a field-effect transistor characterized by using a compound represented by the formula (1) below as a semiconductor material. (In the formula (1), X1 and X2 independently represent a sulfur atom, a selenium atom or a tellurium atom; and R1 and R2 independently represent an unsubstituted or halogeno-substituted C1-C36 aliphatic hydrocarbon group.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: February 28, 2012
    Assignees: Nippon Kayaku Kabushiki Kaisha, Hiroshima University
    Inventors: Kazuo Takimiya, Hideaki Ebata, Hirokazu Kuwabara, Masaaki Ikeda, Tatsuto Yui
  • WATER-SOLUBLE NEAR-INFRARED ABSORBING COLORING MATTERS AND AQUEOUS INKS CONTAINING SAME
    Publication number: 20110123784
    Abstract: Coloring matters represented by general formula (1) or salts thereof are simply provided at a low cost as water-soluble coloring matters which exhibit absorption in the near-infrared region. Further, aqueous ink compositions which contain the coloring matters and have excellent storage stability are also provided. In general formula (1), Nc is optionally substituted naphthalocyanine; M is a metal oxide or the like; R1 and R2 are each independently hydrogen or the like; A is a crosslinking group; X and Y are each independently substituted arylamino or the like; k is more than 0 but up to 12 (on average); p is 0 to less than 12; the sum of k and p is more than 0 but up to 12; and any two or the three of R1, R2 and A may be united to form a ring.
    Type: Application
    Filed: July 24, 2009
    Publication date: May 26, 2011
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Koji Hirota, Takafumi Fujii, Tatsuto Yui
  • Field-effect transistor
    Publication number: 20100032655
    Abstract: Disclosed is a field-effect transistor characterized by using a compound represented by the formula (1) below as a semiconductor material. (In the formula (1), X1 and X2 independently represent a sulfur atom, a selenium atom or a tellurium atom; and R1 and R2 independently represent an unsubstituted or halogeno-substituted C1-C36 aliphatic hydrocarbon group.
    Type: Application
    Filed: October 19, 2007
    Publication date: February 11, 2010
    Inventors: Kazuo Takimiya, Hideaki Ebata, Hirokazu Kuwabara, Masaaki Ikeda, Tatsuto Yui