Patents by Inventor Yong Cao

Yong Cao 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).

  • Patent number: 5470505
    Abstract: Polyanilines are provided that are soluble and that form crystaline solids upon precipitation. The solid polyanilines are electrically conductive, soluble, and can be fabricated into various shaped articles for use in, for example, batteries, electrodes, photovoltaic cells, semi-conductor devices and the like.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: November 28, 1995
    Assignee: Regents of the University of California
    Inventors: Paul Smith, Alan J. Heeger, Yong Cao, Jin-Chih Chiang, Alejandro Andreatta
  • Patent number: 5324453
    Abstract: A method of emulsion polymerization of aniline or substituted anilines for making substituted or unsubstituted homopolymers and co-polymers of aniline. The method includes formation of an emulsion of aniline monomers, polar solvent, non-polar or weakly polar solvent and functionalized protonic acid, which is selected for its ability to perform two functions: acting as a surfactant and acting as a protonating agent (dopant) in producing an electrically conducting polymer. Then, an oxidant is added to polymerize the ingredients of the emulsion. This method provides polyaniline particles of highly crystalline and oriented morphologies of controlled aspect ratios.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: June 28, 1994
    Assignee: Neste Oy
    Inventors: Yong Cao, Jan-Erik Osterholm
  • Patent number: 5232631
    Abstract: Solutions and plasticized compositions of electrically conductive substituted and unsubstituted polyanilines in nonpolar organic fluid phases with functionalized protonic acids are disclosed as are methods of forming such solutions or compositions and use of same to form conductive articles.
    Type: Grant
    Filed: June 12, 1991
    Date of Patent: August 3, 1993
    Assignee: Uniax Corporation
    Inventors: Yong Cao, Paul Smith, Alan J. Heeger
  • Patent number: 5196144
    Abstract: Polyanilines are provided that are soluble and that form crystaline solids upon precipitation. The solid polyanilines are electrically conductive, soluble, and can be fabricated into various shaped articles for use in, for example, batteries, electrodes, photovoltaic cells, semiconductor devices and the like.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: March 23, 1993
    Assignee: The Regents of the University of California
    Inventors: Paul Smith, Alan J. Heeger, Yong Cao, Jin-Chih Chiang, Alejandro Andreatta