Patents by Inventor Dinesh Rayabarapu

Dinesh Rayabarapu 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).

  • Organic light emitting diode containing a novel Ir complex as a phosphorescent emitter
    Publication number: 20050227109
    Abstract: A phosphorescent Ir complex having the following structures (I) or (II) is used as an emitter in an organic light emitting diode (OLED): wherein X is an arbitrary monoanionic bidentate ligand; Z is an arbitrary moiety constituting a nitrogen-containing heterocyclic group; R1 is a substituent on the nitrogen-containing heterocyclic group; m is 0 or a positive integer; R2 and R3 independently are H, halogen, C1-C6 alkyl, a halogen-substituted C1-C6 alkyl, C1-C6 alkoxy, phenyl C1-C6 alkyl, amino, aryl, heterocyclic aryl substituent.
    Type: Application
    Filed: April 13, 2004
    Publication date: October 13, 2005
    Applicant: Chien-Hong Cheng
    Inventors: Chien-Hong Cheng, Jiun-Pey Duan, Dinesh Rayabarapu, Betty Jennifer. S. P.