Patents by Inventor Shuntaro Mataga

Shuntaro Mataga 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
    Patent number: 5059863
    Abstract: An organic electroluminescent device having an organic hole injection transport layer and an organic luminescent layer formed between two conductive layers constituting electrodes, wherein the organic luminescent layer contains a compound selected from the group consisting of a compound of the following formula (I): ##STR1## wherein each of A and B is an aromatic hydrocarbon group which may have a substituent, C is a nitrogen atom which may have a substituent, a sulfur atom, an oxygen atom, or a selenium atom, and D is a nitrogen atom, or a carbon atom which may have a substituent; a compound of the following formula (II): ##STR2## wherein each of E, F, G and .circle.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: October 22, 1991
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Masashi Tashiro, Shuntaro Mataga, Kazufumi Takahashi, Shogo Saito, Tetsuo Tsutsui, Chihaya Adachi, Yoshiharu Sato, Shuichi Maeda