Patents Examined by D. Lawernce Tarazano
  • Organic electroluminescent device, display, and illuminating device
    Patent number: 7906224
    Abstract: An organic electroluminescent element comprising a cathode and an anode having therebetween at least one organic compound layer, wherein one of the organic compound layer comprises a polymer having a repeat unit represented by Formula (1) (wherein Ar1 represents an arylene group which may have a substituent or a heteroarylene group having not more than two heteroatoms, which may have a substituent; and L1 represents a divalent linkage group selected from a prescribed group; and n1 represents an integer of not less than two).
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: March 15, 2011
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hideo Taka, Hiroshi Kita