Patents by Inventor Ryutaro SUGAWARA

Ryutaro SUGAWARA 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: 20180170914
    Abstract: In order to provide a novel ?-conjugated compound capable of increasing the light-emission efficiency of an organic electroluminescence element, for example, this ?-conjugated compound has a structure indicated by general formula (1). (In general formula (1): Z1-Z6 each independently indicate a hydrogen atom, a deuterium atom, an electron-donating group D, or an electron-withdrawing group A; at least out of two among Z1-Z6 is an electron-donating group D and the other is an electron-withdrawing group A; and at least one ortho position combination Z1 and Z2, Z2 and Z3, Z3 and Z4, Z4 and Z5, Z5 and Z6, or Z6 and Z1 among Z1-Z6 is one combination out of an electron-donating group D and an electron-donating group D, an electron-withdrawing group A and an electron-withdrawing group A, or an electron-donating group D and an electron-withdrawing group A.
    Type: Application
    Filed: April 27, 2016
    Publication date: June 21, 2018
    Applicant: Konica Minolta, Inc.
    Inventors: Yasuo MIYATA, Taketo NAMIKAWA, Takayuki IIJIMA, Ryutaro SUGAWARA, Tetsuya YAMADA, Takatugu SUZUKI
  • Publication number: 20160336522
    Abstract: Provided is an organic electroluminescent element containing an anode, a cathode, and an organic functional layer containing one or a plurality of light-emitting layers, the organic functional layer being interposed between the anode and the cathode, wherein at least one of the light-emitting layers contains a compound having two condensed aromatic rings bonded to each other with a linking group; and the condensed aromatic rings form a ?-? stacking structure in the molecule.
    Type: Application
    Filed: January 28, 2015
    Publication date: November 17, 2016
    Inventors: Ryutaro SUGAWARA, Takamune HATTORI, Hiroshi KITA