Patents by Inventor Sze Cheng Yang

Sze Cheng 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).

  • Patent number: 7125925
    Abstract: An organic-inorganic hybrid composite which comprises an inorganic component and an organic conducting component. The inorganic component inhibits deprotonation of the organic conducting component when the composite is exposed to a medium having a pH which would deprotonate the organic conducting component but for the presence of the inorganic component.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: October 24, 2006
    Assignee: The Board of Governors for Higher Education State of Rhode Island and the Providence Plantation
    Inventors: John Sinko, Sze Cheng Yang
  • Patent number: 6821417
    Abstract: A separation system comprising a stationary phase, a double stranded conductive polymer system contacting the stationary phase and means to place a mobile phase carrying a component to be separated from the mobile into contacting relationship with the polymer system whereby the component is captured by the polymer. The double stranded polymer is comprised of a -conjugated polymer and a polyelectrolyte.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: November 23, 2004
    Assignee: The Board of Governors, State of Rhode Island and Providence Plantations
    Inventors: Sze Cheng Yang, Phyllis R. Brown, Christina S. Robb, Patrick McCarthy
  • Publication number: 20040217060
    Abstract: A separation system comprising a stationary phase, a double stranded conductive polymer system contacting the stationary phase and means to place a mobile phase carrying a component to be separated from the mobile into contacting relationship with the polymer system whereby the component is captured by the polymer. The double stranded polymer is comprised of a conjugated polymer and a polyelectrolyte.
    Type: Application
    Filed: June 2, 2004
    Publication date: November 4, 2004
    Inventors: Christina S. Robb, Sze Cheng Yang, Phyllis R. Brown, Patrick McCarthy
  • Patent number: 6803446
    Abstract: A electrically conductive polymeric composition comprising a plurality of polymeric complexes. Each polymeric complex comprises a strand of a &pgr;-conjugated polymer and strand of a polyelectrolyte. The polyelectrolyte is non-covalently bond to the &pgr;-conjugated polymer and has at least one reactive functional group that facilitates cross-linkage between the polymeric complexes when the polymeric complexes are heated.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: October 12, 2004
    Assignee: The Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Sze Cheng Yang, Wenguang Li
  • Publication number: 20040149963
    Abstract: An organic-inorganic hybrid composite which comprises an inorganic component and an organic conducting component. The inorganic component inhibits deprotonation of the organic conducting component when the composite is exposed to a medium having a pH which would deprotonate the organic conducting component but for the presence of the inorganic component.
    Type: Application
    Filed: August 29, 2003
    Publication date: August 5, 2004
    Inventors: John Sinko, Sze Cheng Yang
  • Patent number: 6762238
    Abstract: A coating composition which contains a polymeric complex between polyaniline and a polymeric ion. In addition to the said polymeric complex, the composition contains a water-dispersable binder. The composition is useful as a water-borne paint to be applied onto a metal substrate electrophoretically or non-electrophoretically.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: July 13, 2004
    Assignee: The Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Sze Cheng Yang, Richard Brown
  • Publication number: 20030080057
    Abstract: A separation system comprising a stationary phase, a double stranded conductive polymer system contacting the stationary phase and means to place a mobile phase carrying a component to be separated from the mobile into contacting relationship with the polymer system whereby the component is captured by the polymer. The double stranded polymer is comprised of a -conjugated polymer and a polyelectrolyte.
    Type: Application
    Filed: July 9, 2002
    Publication date: May 1, 2003
    Inventors: Sze Cheng Yang, Phyllis R. Brown, Christina S. Robb, Patrick McCarthy
  • Patent number: 6514432
    Abstract: The template-guided synthesis of water-soluble, chiral conducting polymer complexes is described. Synthesis of water-soluble polyaniline complexes is achieved by carefully controlling the experimental parameters such as; acid concentration, ionic strength, monomer/template ratio, total reagent concentration, and order of reagent addition. Chiral (helical) polyaniline complexes can be synthesized by addition of a chiral inducing agent (chiral acid) prior to polymerization, and the polyaniline helix can be controlled by the addition of the (+) or (−) form of the chiral acid. Moreover the quantity of chiral acid and the salt content has a significant impact on the degree of chirality in the final polymer complexes. The polyaniline and the template have been found to be mixed at the molecular level which results in chiral complexes that are robust through repeated doping and dedoping cycles.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: February 4, 2003
    Assignee: The Regents of the University of California
    Inventors: Hsing-Lin Wang, Patrick A. McCarthy, Sze Cheng Yang
  • Patent number: 6429259
    Abstract: A molecular complex which comprises a biopolymer having a plurality of ionic functional groups and a conductive polymer having charges therein. The charges bind to the ionic functional groups to form the complex. The conductive polymer is selected from the group consisting essentially of polyaniline, polypyrrole, polythiophene, poly(phenylenevinylene) or poly(phenylene sulfide) and substituted versions thereof.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: August 6, 2002
    Assignee: The Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Sze Cheng Yang, Patrick McCarthy
  • Publication number: 20020037994
    Abstract: A electrically conductive polymeric composition comprising a plurality of polymeric complexes. Each polymeric complex comprises a strand of a &pgr;-conjugated polymer and strand of a polyelectrolyte. The polyelectrolyte is non-covalently bond to the &pgr;-conjugated polymer and has at least one reactive functional group that facilitates cross-linkage between the polymeric complexes when the polymeric complexes are heated.
    Type: Application
    Filed: July 13, 2001
    Publication date: March 28, 2002
    Inventor: Sze Cheng Yang
  • Patent number: 6150032
    Abstract: An anti-corrosive polymeric complex which is comprised of a plurality of double-stranded molecular complexes. Each of the molecular complexes are comprised of a strand of a conductive polymer and a strand of a copolymer. The strands of the polymeric complex are non-covalently bonded to each other along the contour of the strands to form a side-by-side, twisted, double-stranded configuration.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: November 21, 2000
    Assignee: The Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Sze Cheng Yang, Robert J. Racicot, Robert L. Clark, Huaibing Liu, Richard Brown, Mohd Norazmi Alias
  • Patent number: 5253100
    Abstract: Electrochromic material, i.e. polyaniline, is polymerized in situ in a polymeric electrolyte to form an electrochromic/polyelectrolyte mixture. The mixture is coated as a film on electrochromic material. A film of electrolyte is placed in ion transfer relationship with the electrochromic/polyelectrolyte film. This electrochromic/polyaniline/polyelectrolyte film greatly increases the ion transfer between the electrochromic film and the electrolytic film by imposing a region of molecularly mixed electrochromic material and electrolyte.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: October 12, 1993
    Assignee: The Board of Governors for Higher Education, State of Rhode Island and Providence Plantations
    Inventors: Sze Cheng Yang, Jyun-Hwei Hwang