Patents by Inventor Sze C. Yang

Sze C. Yang 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).

  • Conducting polymers for coatings and antielectrostatic applications
    Patent number: 6656388
    Abstract: A processable electrically conductive polymeric complex comprising a polyelectrolyte having acid functional groups and a conductive polymer selected from the group consisting of polyaniline, polypyrrole, polythiophene, poly(phenylene sulfide), the conductive polymer ionically bound to the polyelectrolyte. The mole ratio of the monomers which form the conductive polymer to the acid functional groups of the polyelectrolyte is ≧1. The polymeric complex is made by a template-guided chemical polymerization process which comprises adsorbing the monomers onto the polyelectrolyte in a mixture of alcohol and water to form a polyectrolyte adduct, emulsifying the polyelectrolyte adduct in an acid to form an emulsified polyelectrolyte adduct and oxidatively polymerizing the emulsified polyectrolyte adduct. The polymeric complex is water insoluble when dried as a coating on a substrate.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: December 2, 2003
    Assignee: The Board of Governors for Higher Education, State Rhode Island and Providence Plantations
    Inventors: Sze C. Yang, Huaibing Liu, Robert L. Clark
  • Molecular complex of conductive polymer and polyelectrolyte; and a process of producing same
    Patent number: 5489400
    Abstract: A processable, electrically conductive polymer composition comprises a molecular complex made by template guided chemical polymerization and having a polyelectrolyte and a conductive polymer. A process of preparing a processable, electrically conductive polymer composition comprises the steps of oxidative polymerizing the monomers (abbreviated as AN) for a conductive polymer in the presence of a polyelectrolyte which serves first as a template (abbreviated as TEMP) that binds AN to form a template-(AN)n complex; and adding an oxidant to the template-(AN)n complex for conducting an oxidative polymerization to obtain a molecular complex of a polyelectrolyte and a conductive polymer.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: February 6, 1996
    Assignee: Industrial Technology Research Institute
    Inventors: Jia M. Liu, Linfeng Sun, Sze C. Yang
  • Electrodeless plating method for combining the polymerization and the coating of electrochromic polymers
    Patent number: 4842383
    Abstract: A method of forming a thin film of an electrochromic material is disclosed. The method involves coating an acidic solution containing monomeric aniline and effective amounts of an oxidant and a catalyst on the surface on which the electrochromic film is to be formed. The monomeric aniline polymerizes in situ on the surface to from the electrochromic film.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: June 27, 1989
    Assignee: Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Sze C. Yang, Robert L. Clark
  • Variable color transparent panels
    Patent number: 4749260
    Abstract: An electronic display device having a polyaniline film coated on a transparent electrode. The film has electrochromic properties and will display at least three distinct reproducible color changes.
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: June 7, 1988
    Assignee: The Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Sze C. Yang, Richard R. Durand, Jr.
  • Electronic display element
    Patent number: 4586792
    Abstract: An electronic display device having a polyaniline film coated on a transparent electrode. The film has electrochromic properties and will display at least three distinct reproducible color changes.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: May 6, 1986
    Assignees: Board of Governors for Higher Education, State of Rhode Island, Providence Plantations
    Inventors: Sze C. Yang, Richard R. Durand, Jr.