Patents by Inventor Kazuaki Kawashima

Kazuaki Kawashima 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: 9209409
    Abstract: A naphthobisthiadiazole derivative is represented by Formula 1. In Formula 1, Z is selected from a hydrogen atom, a boronic acid group, a boronic acid ester group, a trifluoroborate salt group and a triolborate salt group, and at least one Z is a boronic acid group, a boronic acid ester group, a trifluoroborate salt group or a triolborate salt group. The naphthobisthiadiazole derivative is an organoboron compound, and can be converted to various compounds by a Suzuki-Miyaura coupling reaction; thus, is applicable as a precursor of complex compounds. Using the naphthobisthiadiazole derivative, research, development, and practical applications of low molecular weight compounds and high-molecular compounds useful for various organic semiconductor materials and the like can be ensured.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 8, 2015
    Assignees: National University of Corporation Hiroshima University, Sankyo Kasei Co., Ltd.
    Inventors: Kazuo Takimiya, Itaru Osaka, Kazuaki Kawashima
  • Publication number: 20150112081
    Abstract: A naphthobisthiadiazole derivative is represented by Formula 1. In Formula 1, Z is selected from a hydrogen atom, a boronic acid group, a boronic acid ester group, a trifluoroborate salt group and a triolborate salt group, and at least one Z is a boronic acid group, a boronic acid ester group, a trifluoroborate salt group or a triolborate salt group. The naphthobisthiadiazole derivative is an organoboron compound, and can be converted to various compounds by a Suzuki-Miyaura coupling reaction; thus, is applicable as a precursor of complex compounds. Using the naphthobisthiadiazole derivative, research, development, and practical applications of low molecular weight compounds and high-molecular compounds useful for various organic semiconductor materials and the like can be ensured.
    Type: Application
    Filed: February 27, 2013
    Publication date: April 23, 2015
    Inventors: Kazuo Takimiya, Itaru Osaka, Kazuaki Kawashima