Patents by Inventor Sivagnasundram Surendrakumar

Sivagnasundram Surendrakumar 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).

  • Electroluminescent devices incorporating mixed metal organic complexes
    Patent number: 7235311
    Abstract: An electroluminescent device in which there is an electroluminescent which comprises a complex of general formula (L?)nM1M2 or of general formula (L?)n M1M2 (Lp), where Lp is a neutral ligand and where M1 is a rare earth, transition metal, lanthamide or an actimide, M2 is a non rare earth metal, L?is an organic complex and n is the combined valence state of M1 and M2.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: June 26, 2007
    Assignee: Oled-T Limited
    Inventors: Poopathy Kathirgamanathan, Seenivasagam Ravichandran, Sivagnasundram Surendrakumar
  • Electroluminescent devices incorporating mixed metal organic complexes
    Publication number: 20040137264
    Abstract: An electroluminescent device in which there is an electroluminescent which comprises a complex of general formula (L12)nM1M2 (Lp), where Lp is a neutral ligand and where M1 is a rare earth, transition metal lanthamide or an actimide, M2 is a non rare earth metal, L&agr;is an organic complex and n is the combined valence state of M1 and M2.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 15, 2004
    Inventors: Poopathy Kathirgamanathan, Seenivasagam Ravichandran, Sivagnasundram Surendrakumar