Patents by Inventor Joanna M. Wiesinger

Joanna M. Wiesinger 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).

  • Methods for preparing conductive polyanilines
    Patent number: 5773568
    Abstract: Methods for preparing conductive polyaniline forms are provided in which the conductivity of the polyaniline form can be substantially increased by contacting the polyaniline form with a phenolic compound that acts as a secondary dopant for the polyaniline. Generally, a doped polyaniline solution is prepared in which the polyaniline is initially doped by a protonic acid and a doped polyaniline form is then prepared from this solution. The polyaniline form can then be contacted with the phenolic compound in either its vapor or liquid state, however it is preferred that the polyaniline form be maintained in either the gelatinous or solid state during the contacting step. The conductivity of the polyanine form can be raised by a factor of up to about 500-1000.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: June 30, 1998
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Alan G. MacDiarmid, You Nan Xia, Joanna M. Wiesinger
  • Methods for preparing conductive polyanilines
    Patent number: 5403913
    Abstract: Methods for preparing conductive polyaniline forms are provided in which the conductivity of the polyaniline form can be substantially increased by contacting the polyaniline form with a phenolic compound that acts as a secondary dopant for the polyaniline. Generally, a doped polyaniline solution is prepared in which the polyaniline is initially doped by a protonic acid and a doped polyaniline form is then prepared from this solution. The polyaniline form can then be contacted with the phenolic compound in either its vapor or liquid state, however it is preferred that the polyaniline form be maintained in either the gelatinous or solid state during the contacting step. The conductivity of the polyaniline form can be raised by a factor of up to about 500-1000.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: April 4, 1995
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Alan G. MacDiarmid, You N. Xia, Joanna M. Wiesinger