Patents by Inventor Xiao-Chang Li

Xiao-Chang Li 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).

  • POLYMERS FOR USE IN OPTICAL DEVICES
    Publication number: 20030008991
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Application
    Filed: April 28, 2000
    Publication date: January 9, 2003
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Compounds for electronic devices
    Patent number: 6403809
    Abstract: The present invention provides a compound or complex comprising at least two moieties, each moiety being comprised of two or more thiophenes fused directly to each other. Also provided is a method for the production of the compounds of the present invention, which method comprises the coupling of one fused thiophene derivative to another fused thiophene derivative.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: June 11, 2002
    Assignee: Cambridge Display Technolog Limited
    Inventors: Andrew Bruce Holmes, Stephen Carl Moratti, Xiao-Chang Li, Henning Sirringhaus, Arno Kraft, Michael Mark Murray