Patents by Inventor Rempei Kuwahara

Rempei Kuwahara 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).

  • Imidazole compound, material for electronic device, electroluminescent device, and electronic device thereof
    Patent number: 9559312
    Abstract: The present invention mainly provides a new imidazole compound, which can be used to produce electronic devices that are able to operate at low driving voltage and at high current efficiency. The new imidazole compound of the present invention is represented by the following formula (1): (In the formula (1), R1 and R2 are respectively the same as described in the specification).
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: January 31, 2017
    Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Taizo Hatta, Rempei Kuwahara, Yoshiyuki Hirao, Banumathy Balaganesan, Heh-Lung Huang