Patents by Inventor Soichiro Nakatsuka

Soichiro Nakatsuka 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).

  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20250081847
    Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.
    Type: Application
    Filed: March 14, 2024
    Publication date: March 6, 2025
    Applicants: Kwansei Gakuin Educational Foundation, SK Materials JNC Co., Ltd.
    Inventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Kiichi NAKAJIMA, Hiroki HIRAI, Yohei ONO, Kazushi SHIREN, Jingping NI, Takeshi MATSUSHITA, Toshiaki IKUTA
  • Polycyclic aromatic compound
    Patent number: 11653565
    Abstract: By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings are linked via a boron atom, a nitrogen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: May 16, 2023
    Assignees: Kwansei Gakuin Educational Foundation, SK Materials JNC Co., Ltd.
    Inventors: Takuji Hatakeyama, Soichiro Nakatsuka, Hajime Gotoh, Yasuyuki Sasada, Motoki Yanai, Toshiaki Ikuta
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20200220083
    Abstract: By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings are linked via a boron atom, a nitrogen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Applicants: Kwansei Gakuin Educational Foundation, JNC Corporation
    Inventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Hajime GOTOH, Yasuyuki SASADA, Motoki YANAI, Toshiaki IKUTA
  • Polycyclic aromatic compound
    Patent number: 10686141
    Abstract: By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings are linked via a boron atom, a nitrogen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: June 16, 2020
    Assignees: Kwansei Gakuin Educational Foundation, JNC Corporation
    Inventors: Takuji Hatakeyama, Soichiro Nakatsuka, Hajime Gotoh, Yasuyuki Sasada, Motoki Yanai, Toshiaki Ikuta
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20200144515
    Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.
    Type: Application
    Filed: June 11, 2019
    Publication date: May 7, 2020
    Applicants: Kwansei Gakuin Educational Foundation, JNC Corporation
    Inventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Kiichi NAKAJIMA, Hiroki HIRAI, Yohei ONO, Kazushi SHIREN, Jingping NI, Takeshi MATSUSHITA, Toshiaki IKUTA
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20200144514
    Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.
    Type: Application
    Filed: June 11, 2019
    Publication date: May 7, 2020
    Applicants: Kwansei Gakuin Educational Foundation, JNC Corporation
    Inventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Kiichi NAKAJIMA, Hiroki HIRAI, Yohei ONO, Kazushi SHIREN, Jingping NI, Takeshi MATSUSHITA, Toshiaki IKUTA
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20200144513
    Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.
    Type: Application
    Filed: June 11, 2019
    Publication date: May 7, 2020
    Applicants: Kwansei Gakuin Educational Foundation, JNC Corporation
    Inventors: Takuji HATAKEYAMA, Soichiro NAKATSUKA, Kiichi NAKAJIMA, Hiroki HIRAI, Yohei ONO, Kazushi SHIREN, Jingping NI, Takeshi MATSUSHITA, Toshiaki IKUTA
  • Polycyclic aromatic compound
    Patent number: 10374166
    Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: August 6, 2019
    Assignees: KWANSEI GAKUIN EDUCATIONAL FOUNDATION, JNC CORPORATION
    Inventors: Takuji Hatakeyama, Soichiro Nakatsuka, Kiichi Nakajima, Hiroki Hirai, Yohei Ono, Kazushi Shiren, Jingping Ni, Takeshi Matsushita, Toshiaki Ikuta
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20180069182
    Abstract: By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings are linked via a boron atom, a nitrogen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.
    Type: Application
    Filed: September 6, 2017
    Publication date: March 8, 2018
    Applicants: Kwansei Gakuin Educational Foundation, JNC Corporation
    Inventors: Takuji Hatakeyama, Soichiro NAKATSUKA, Hajime GOTOH, Yasuyuki SASADA, Motoki YANAI, Toshiaki IKUTA
  • POLYCYCLIC AROMATIC COMPOUND
    Publication number: 20150236274
    Abstract: A novel polycyclic aromatic compound in which plural aromatic rings are linked via boron atoms, oxygen atoms and the like is provided, and therefore, the range of selection of the material for organic electroluminescent elements can be widened. Also, an excellent organic electroluminescent element is provided by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element.
    Type: Application
    Filed: October 7, 2014
    Publication date: August 20, 2015
    Applicants: Kwansei Gakuin Educational Foundation, JNC Corporation
    Inventors: Takuji Hatakeyama, Soichiro Nakatsuka, Kiichi Nakajima, Hiroki Hirai, Yohei Ono, Kazushi Shiren, Jingping Ni, Takeshi Matsushita, Toshiaki Ikuta