Patents by Inventor Keisuke Asaka

Keisuke Asaka 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).

  • Publication number: 20190088880
    Abstract: A photovoltaic element includes at least a cathode, a photoelectric conversion layer, a hole extraction layer, and an anode in this order, the hole extraction layer containing a hole transporting material and a compound represented by formula (1) or (2): wherein, in formula (1), R1 represents an alkyl group having 8 to 14 carbon atoms or an alkanoyl group having 8 to 14 carbon atoms, and n represents a natural number of 1 to 9; and in formula (2), R2 represents an alkenyl group, and m represents a natural number.
    Type: Application
    Filed: March 13, 2017
    Publication date: March 21, 2019
    Inventors: Keisuke Asaka, Shuhei Yamamoto, Daisuke Kitazawa