Patents by Inventor Li-Duan Tsai

Li-Duan Tsai 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).

  • Publication number: 20070048592
    Abstract: The present invention relates to a composition for enhancing the utilization of catalysts in fuel cell, comprising catalysts, proton-exchanged ionic polymers, and coupling agents. The coupling agents are bonded to the catalysts or catalyst carriers by a B1 functional group and bonded to the proton-exchanged ionic polymers by a B2 functional group. The present invention also relates to a method for enhancing the utilization of catalysts in fuel cell, comprising the steps of (a) utrasonicating catalysts; (b) adding coupling agents to bond to the catalysts; (c) adding a perfluoro polymer to form a catalyst-coupling agent-perfluoro polymer complex whereby developing stable dispersion; wherein the coupling agents in step (b) are bonded to the catalysts by a B1 functional group and bonded to a perfluoro polymer by a B2 functional group.
    Type: Application
    Filed: May 8, 2006
    Publication date: March 1, 2007
    Applicant: Industrial Technology Research Institute
    Inventors: Fu-Chi Wu, Li-Duan Tsai, Kan-Lin Hsueh, Du-Yuan Yu, Chiou-Ping Huang, Sung-Chun Chang
  • Publication number: 20060202169
    Abstract: A series of retardants on polymerization of aniline. The molecular structure of the retardant are aromatic compounds with meta-disubstitution. The two substituents of the retardant could be respectively selected from the group of amino group, hydroxyl group, thiol group, and mixtures thereof. A chemical composition for polyaniline preparation comprising: aniline monomer, oxidant, protic acid, retardant and solvent.
    Type: Application
    Filed: March 7, 2006
    Publication date: September 14, 2006
    Inventors: Wen-Nan Tseng, Li-Duan Tsai
  • Patent number: 6920036
    Abstract: A solid electrolytic capacitor, fabrication method, and coupling agent utilized in the same. The capacitor includes a valve metal layer, an oxide dielectric layer on at least a part of the surface of the valve metal layer, a coupling layer having a molecular chain with a first end bonding to the oxide dielectric layer by covalent bonding and second end with a functional group of a monomer of a conducting polymer, and a conducting polymer layer bonding to the monomer by covalent bonding.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: July 19, 2005
    Assignee: Industrial Technology Research Institute
    Inventors: Wen Nan Tseng, Li Duan Tsai, Chun-Guey Wu
  • Patent number: 6862170
    Abstract: A solid-state electrolytic capacitor and its producing method are disclosed. First, a capacitor element containing conducting polymer as the electrolyte sucks non-conjugate polymer precursors solution and the polymeric precursor polymerizes and crosslinks. Therefore, the conducting polymer combines non-conjugate polymer into a kind of interpenetration or semi-interpenetration network polymer material. Finally complete the manufacture of the capacitor by sealing the capacitor, and conducting the age process.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: March 1, 2005
    Assignee: Industrial Technology Research Institute-Material Research Laboratories
    Inventors: Li-Duan Tsai, Yi-Chang Du
  • Publication number: 20040184222
    Abstract: A solid-state electrolytic capacitor and its producing method are disclosed. First, a capacitor element containing conducting polymer as the electrolyte sucks non-conjugate polymer precursors solution and the polymeric precursor polymerizes and crosslinks. Therefore, the conducting polymer combines non-conjugate polymer into a kind of interpenetration or semi-interpenetration network polymer material. Finally complete the manufacture of the capacitor by sealing the capacitor, and conducting the age process.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 23, 2004
    Inventors: Li-Duan Tsai, Yi-Chang Du
  • Publication number: 20040169163
    Abstract: A mixture solution for preparing conducting polymers. The conducting polymer is formed from the mixture of monomer and oxidant solution.
    Type: Application
    Filed: November 14, 2003
    Publication date: September 2, 2004
    Inventors: Li-Duan Tsai, Yi-Chang Du
  • Patent number: 6522526
    Abstract: The present invention discloses TCNQ complex, shown as the following formula: wherein X represents identical or different double electron donors, TCNQ represents tetracyanoquinodimethane. The TCNQ complex is prepared by synthesizing TCNQ with double electron donors as the major composition. Different ratios between compositions can be adjusted based on the distinct properties of various electron donors to conform to different needs of manufacturing process. The TCNQ complex of the present invention is resistant to high voltage and high temperature. Its melting point is higher than the soldering temperature. In addition, the TCNQ complex has better conductivity that remains even after the heating/cooling cycle.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: February 18, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Li-Duan Tsai, Chang-Lin Chyung, Wen-Nan Tseng, Yu-Tim Tseng, Yu-Min Peng
  • Publication number: 20020163774
    Abstract: The present invention discloses TCNQ complex, shown as the following formula: 1
    Type: Application
    Filed: December 5, 2001
    Publication date: November 7, 2002
    Inventors: Li-Duan Tsai, Chang-Lin Chyung, Wen-Nan Tseng, Yu-Tim Tseng, Yu-Min Peng