Patents by Inventor David Place

David Place 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).

  • N'-(2-HALOBENZYLIDENE)SULFONYLHYDRAZIDES AS INTERMEDIATES IN THE MANUFACTURE OF ARYLSULFONYLINDAZOLES
    Publication number: 20090023925
    Abstract: The present invention provides N?-(2-halobenzylidene)sulfonylhydrazides of formula I Compounds of formula I are useful for the manufacture of 1-arylsulfonylindazole 5-HT6 ligands.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 22, 2009
    Applicant: Wyeth
    Inventors: Anita Wai-Yin Chan, Mahmut Levent, David Place, Panolil Raveendranath, Sanjay Raveendranth, Vijay Raveendranath, Girija Raveendranath, Xinxu Shi, Charles Wu
  • Electroluminescent device with red triplet emitter
    Publication number: 20070048544
    Abstract: An organic light-emitting device contains a cathode, an anode, and having located there-between a light-emitting layer, comprising: a) a host material including an organometallic compound represented by Formula (1): wherein: R1 through R6 each independently represent hydrogen or a substituent group, and L represents a substituent; and b) at least one phosphorescent light-emitting compound, with a triplet energy less than or equal to the triplet energy of the host material. The device provides an improved combination of low voltage and luminance efficiency.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 1, 2007
    Inventors: Christopher Brown, David Place, Marina Kondakova, Joseph Deaton, Muhunthan Sathiosatham
  • Organic element for electroluminescent devices
    Publication number: 20060063031
    Abstract: An OLED device contains a layer comprising a hole transporting compound, a certain type of oxinoid compound, and a light emitting phosphorescent compound.
    Type: Application
    Filed: December 17, 2004
    Publication date: March 23, 2006
    Inventors: Christopher Brown, Joseph Deaton, David Place, Marina Kondakova, Shouquan Huo
  • Organic electroluminescent devices and composition
    Publication number: 20060063030
    Abstract: An organic light emitting device contains a cathode, an anode, and has located there-between a light emitting layer, comprising co-hosts including a hole transporting compound and a particular aluminum chelate, together with at least one light emitting Iridium compound, wherein the Iridium compound is a tris CˆN-cyclometallated complex with a triplet energy less than or equal to the triplet energy of each of the co-hosts.
    Type: Application
    Filed: December 17, 2004
    Publication date: March 23, 2006
    Inventors: Joseph Deaton, Christopher Brown, David Place, Marina Kondakova, Shouquan Huo