Patents by Inventor Michihiro Okuyama

Michihiro Okuyama 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 electroluminescent device, thin luminous film, display apparatus, and lighting apparatus
    Patent number: 10862048
    Abstract: An organic electroluminescent device contains an anode, a cathode, and an organic layer containing at least one luminous layer. The organic layer is disposed between the anode and the cathode. At least one luminous layer contains a ?-conjugated compound exhibiting no overlap between the electron density distributions of the HOMO and the LUMO in the molecule, such that electron transition between the HOMO and the LUMO occurs by a through-space interaction in the molecule. The ?-conjugated compound has a ?-conjugated aromatic ring at a moiety on which at least one of the HOMO and the LUMO is localized.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: December 8, 2020
    Assignee: Merck Patent GmbH
    Inventors: Tomohiro Oshiyama, Hiroshi Kita, Taketo Namikawa, Michihiro Okuyama, Tatsuya Hattori, Yasuo Miyata
  • ORGANIC ELECTROLUMINESCENT DEVICE, THIN LUMINOUS FILM, DISPLAY APPARATUS, AND LIGHTING APPARATUS
    Publication number: 20180212157
    Abstract: An organic electroluminescent device contains an anode, a cathode, and an organic layer containing at least one luminous layer. The organic layer is disposed between the anode and the cathode. At least one luminous layer contains a ?-conjugated compound exhibiting no overlap between the electron density distributions of the HOMO and the LUMO in the molecule, such that electron transition between the HOMO and the LUMO occurs by a through-space interaction in the molecule. The ?-conjugated compound has a ?-conjugated aromatic ring at a moiety on which at least one of the HOMO and the LUMO is localized.
    Type: Application
    Filed: July 30, 2015
    Publication date: July 26, 2018
    Inventors: Tomohiro Oshiyama, Hiroshi Kita, Taketo Namikawa, Michihiro Okuyama, Tatsuya Hattori, Yasuo Miyata