Patents by Inventor Chien-Chung Han

Chien-Chung Han 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).

  • Conductive polymer film formation using initiator pretreatment
    Patent number: 5225495
    Abstract: This invention relates to a process for forming polyaniline films on a substrate and to composite articles formed by said process.
    Type: Grant
    Filed: July 10, 1991
    Date of Patent: July 6, 1993
    Assignee: Richard C. Stewart, II
    Inventors: Chien-Chung Han, Ray H. Baughman, Ronald L. Elsenbaumer
  • Conductive polymers formed from conjugated backbone polymers doped with non-oxidizing protonic acids
    Patent number: 5185100
    Abstract: This invention relates to electrically conductive polymers comprised of conjugated backbone polymers doped with one or more non-oxidizing protonic acids.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: February 9, 1993
    Assignee: Allied-Signal Inc
    Inventors: Chien-Chung Han, Ronald L. Elsenbaumer
  • Thermally induced chain coupling in solid state polyaniline
    Patent number: 5171478
    Abstract: A process for increasing the intrinsic viscosity of polyaniline by heating the polyaniline in the solid state.
    Type: Grant
    Filed: March 5, 1991
    Date of Patent: December 15, 1992
    Assignee: Allied-Signal Inc.
    Inventor: Chien-Chung Han
  • Stabilized polyelectrolyte precursors of poly(aromatic and heteroaromatic vinylenes)
    Patent number: 4900782
    Abstract: This invention relates to novel forms of poly(heteroaromatic vinylenes), and poly(aromatic vinylenes) and to solutions thereof, either in the conductive form or non-conductive form.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: February 13, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Chien-Chung Han, Kwan-Yue A. Jen, Ronald L. Elsenbaumer