Patents by Inventor Masashi Ueta

Masashi Ueta 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).

  • Nitrogen-containing fused ring compound, nitrogen-containing fused ring polymer, organic thin film, and organic thin film element
    Patent number: 8859717
    Abstract: Nitrogen-containing fused ring compound having at least one structural unit selected from the group consisting of a structural unit represented by the formula (1-1) and a structural unit represented by the formula (1-2).
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: October 14, 2014
    Assignees: Sumitomo Chemical Company, Limited, Osaka University
    Inventors: Yutaka Ie, Masashi Ueta, Yoshio Aso, Masato Ueda
  • Nitrogen-containing condensed ring compound, nitrogen-containing condensed ring polymer, organic thin film, and organic thin film element
    Patent number: 8841410
    Abstract: It is an object of the present invention to provide a nitrogen-containing condensed ring compound, which can be used as an organic n-type semiconductor having an excellent electron transport property and which is also excellent in terms of solubility in an organic solvent. The nitrogen-containing condensed ring compound of the present invention has a structural unit represented by the following formula (1-1) or formula (1-2): wherein Ar1 represents an aromatic ring; one of Y1 and Y2 represents a single bond, and the other represents —C(R11)(R12)— or —C(?X1)—; one of Y3 and Y4 represents a single bond, and) the other represents —C(R21)(R22)— or —C(?X2)—, and one of Y1 to Y4 represents —C(R11)(R12)— or —C(R21)(R22)—; at least one of W1 and W2 represents —N?; and Z1 and Z2 each represent any one of the groups represented by the formula (i) to the formula (ix).
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: September 23, 2014
    Assignees: Sumitomo Chemical Company, Limited, Osaka University
    Inventors: Yoshio Aso, Yutaka Ie, Masashi Ueta, Masato Ueda
  • NITROGEN-CONTAINING CONDENSED RING COMPOUND, NITROGEN-CONTAINING CONDENSED RING POLYMER, ORGANIC THIN FILM, AND ORGANIC THIN FILM ELEMENT
    Publication number: 20130324685
    Abstract: It is an object of the present invention to provide a nitrogen-containing condensed ring compound, which can be used as an organic n-type semiconductor having an excellent electron transport property and which is also excellent in terms of solubility in an organic solvent. The nitrogen-containing condensed ring compound of the present invention has a structural unit represented by the following formula (1-1) or formula (1-2): wherein Ar1 represents an aromatic ring; one of Y1 and Y2 represents a single bond, and the other represents —C(R11)(R12)— or —C(?X1)—; one of Y3 and Y4 represents a single bond, and the other represents —C(R21)(R22)— or —C(?X2)—, and one of Y1 to Y4 represents —C(R11)(R12)— or —C(R21)(R22)—; at least one of W1 and W2 represents —N?; and Z1 and Z2 each represent any one of the groups represented by the formula (i) to the formula (ix).
    Type: Application
    Filed: January 30, 2012
    Publication date: December 5, 2013
    Applicants: OSAKA UNIVERSITY, SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yoshio Aso, Yutaka Ie, Masashi Ueta, Masato Ueda
  • NITROGEN-CONTAINING FUSED RING COMPOUND, NITROGEN-CONTAINING FUSED RING POLYMER, ORGANIC THIN FILM, AND ORGANIC THIN FILM ELEMENT
    Publication number: 20130041123
    Abstract: Nitrogen-containing fused ring compound having at least one structural unit selected from the group consisting of a structural unit represented by the formula (1-1) and a structural unit represented by the formula (1-2).
    Type: Application
    Filed: March 3, 2011
    Publication date: February 14, 2013
    Applicants: OSAKA UNIVERSITY, SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yutaka Ie, Masashi Ueta, Yoshio Aso, Masato Ueda