Patents by Inventor Teppei Shimakawa

Teppei Shimakawa 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).

  • Organic semiconductor material, organic semiconductor structure, and organic semiconductor device
    Patent number: 7847284
    Abstract: There are provided an organic semiconductor material, which can constitute an organic semiconductor layer having homogeneous and a high level of charge transfer characteristics over a large area, and an organic semiconductor structure and an organic semiconductor device utilizing the organic semiconductor material. The organic semiconductor material comprises a polymeric compound and a monomeric compound, the polymeric compound having, in a part of its side chain, a core structure comprising a predetermined ? electron ring, the monomeric compound having a core structure comprising a predetermined ? electron ring, the monomeric compound having, in at least one of its both ends, a terminal group capable of developing liquid crystallinity.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: December 7, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Jun-Ichi Hanna, Teppei Shimakawa, Masanori Akada, Hiroki Maeda
  • Organic semiconductor material, organic semiconductor structure, and organic semiconductor device
    Publication number: 20050127354
    Abstract: There are provided an organic semiconductor material, which can constitute an organic semiconductor layer having homogeneous and a high level of charge transfer characteristics over a large area, and an organic semiconductor structure and an organic semiconductor device utilizing the organic semiconductor material. The organic semiconductor material comprises a polymeric compound and a monomeric compound, the polymeric compound having, in a part of its side chain, a core structure comprising a predetermined ? electron ring, the monomeric compound having a core structure comprising a predetermined ? electron ring, the monomeric compound having, in at least one of its both ends, a terminal group capable of developing liquid crystallinity.
    Type: Application
    Filed: March 26, 2003
    Publication date: June 16, 2005
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Jun-Ichi Hanna, Teppei Shimakawa, Masanori Akada, Hiroki Maeda