Patents by Inventor K. R. Justin Thomas

K. R. Justin Thomas 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).

  • 3,6,9-Trisubstituted carbazoles for light emitting diodes
    Patent number: 6649772
    Abstract: The present invention features substituted carbazole compounds of formula (I): Each of Z1 and Z2, independently, is each of A1 and A2, independently, is S, O, NR, or CH═CH; each of Y1 and Y2, independently, is aryl or heteroaryl; each of R1-R5, independently, is aryl or heteroaryl; and each of R6-R11, independently, is H, CN, alkyl, OR, NRR′, COR, or C(O)OR; and each of R and R′, independently, is H or alkyl. The compounds are useful as hole-transporting, light-emitting molecules with high glass transition temperatures.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: November 18, 2003
    Assignee: Academia Sinica
    Inventors: Jiann T'Suen Lin, K. R. Justin Thomas, Yu-Tai Tao, Chung-Wen Ko
  • 3,6,9-Trisubstituted carbazoles for light emitting diodes
    Publication number: 20020107405
    Abstract: The present invention features substituted carbazole compounds of formula (I): 1
    Type: Application
    Filed: November 21, 2001
    Publication date: August 8, 2002
    Inventors: Jiann T?apos;Suen Lin, K. R. Justin Thomas, Yu-Tai Tao, Chung-Wen Ko
  • Organometallic compounds
    Patent number: 6140503
    Abstract: A compound consisting of three aromatic moieties respectively bonded to a methyl carbocation, and a counterion; wherein each of the three aromatic moieties is optionally substituted with an electron-donating group, at least one of the three aromatic moieties is bonded to a metal complex moiety, either directly or through a linker, and the methyl carbocation, the aromatic moieties, the metal complex moiety, and the linker form a conjugated system.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: October 31, 2000
    Assignee: Academia Sinica
    Inventors: Jiann T'suen Lin, Iuan-Yuan Wu, K. R. Justin Thomas