Patents by Inventor Chan-Ting Chang

Chan-Ting Chang 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).

  • Citrate/ethylenediamine gel method for forming high temperature superconductors
    Patent number: 5066636
    Abstract: A citrate/ethylenediamine gel method for forming oxide superconductors of the Y-Ba-Cu-O, Bi-Ca-Sr-Cu-O, Tl-Ca-Ba-Cu-O system by employing the nitrates of the individual metals and citric acid. Ethylenediamine is then added to form gels. These materials then undergo calcination and sintering processes. The respective superconductors obtained possess a superconducting zero resistance temperature at 93K, 78K and 118K respectively.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: November 19, 1991
    Assignee: Industrial Technology Research Institute
    Inventors: Ru-Shi Liu, Wang-Nang Wang, Chan-Ting Chang