Patents by Inventor Noriko Yasukawa

Noriko Yasukawa 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: 20090160318
    Abstract: Disclosed is an organic EL device having high luminous efficiency and long emission life, wherein emission wavelength is controlled. Also disclosed are an illuminating device and a display. Specifically disclosed is an organic electroluminescent device containing at least a light-emitting layer sandwiched between an anode and a cathode. This organic electroluminescent device is characterized in that the light-emitting layer contains a metal complex having a partial structure represented by the following general formula (1).
    Type: Application
    Filed: August 18, 2006
    Publication date: June 25, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Noriko Yasukawa, Eisaku Katoh, Tomohiro Oshiyama, Shinya Otsu
  • Publication number: 20090140639
    Abstract: An organic electroluminescence element comprising at least an emission layer sandwiched between an anode and a cathode, wherein the emission layer comprises a metal complex having a partial structure represented by Formula (1):
    Type: Application
    Filed: August 28, 2006
    Publication date: June 4, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Noriko Yasukawa, Eisaku Katoh, Tomohiro Oshiyama
  • Publication number: 20090091253
    Abstract: The first object of the present invention is to provide a blue phosphorescent light-emitting organic electroluminescent (EL) device driven at low voltage, and a display and illuminating device each using such an organic EL device. The second object of the present invention is to provide an organic EL device having long life, and an illuminating device and display each using such an organic EL device. Each organic EL device comprises an electrode and at least one organic layer on a substrate, and at least one of the organic layers is a light-emitting layer containing a host compound and a phosphorescent compound. In order to accomplish the first object, the host compound has an HOMO of from ?7.20 to ?5.42 eV and an LUMO of from ?2.30 to ?0.50 eV, and the phosphorescent compound is represented by the general formula (1). In order to accomplish the second object, the host compound is an electron-transporting host compound having an excited triplet energy T1 of not less than 2.
    Type: Application
    Filed: March 13, 2007
    Publication date: April 9, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Noriko Yasukawa, Shuichi Sugita, Hiroshi Kita, Eisaku Katoh, Yoshiyuki Suzuri, Shinya Otsu, Aki Tsuji
  • Publication number: 20090039771
    Abstract: This invention provides an organic EL element, which can control luminescence wavelength, exhibits high luminescence efficiency, and has a prolonged emission life, and a lighting equipment and a display device. They can be realized by an organic electroluminescent element material characterized by a metal complex having a structure represented by the following general formula (A) as a partial structure.
    Type: Application
    Filed: June 6, 2006
    Publication date: February 12, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Tomohiro Oshiyama, Eisaku Katoh, Noriko Yasukawa