Patents by Inventor Tong-Yi Zhang

Tong-Yi Zhang 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).

  • Formic acid-graphite intercalation compound
    Patent number: 5698088
    Abstract: A graphite intercalation compound is disclosed in which formic acid (HCOOH) is the intercalate. The GIC may be formed by an electrochemical process using formic acid solution as both the electrolyte and as the intercalate source. The resulting formic acid GIC may be expanded by rapid heating to produce an expanded graphite product that in turn may be mechanically processed into flexible graphite.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: December 16, 1997
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Feiyu Kang, Yang Leng, Tong-Yi Zhang
  • Method of manufacturing flexible graphite
    Patent number: 5503717
    Abstract: A ZnCl.sub.2 -graphite intercalation compound is synthesised by an electrochemical process in an aqueous solution. Flexible graphite is manufactured by exfoliating and then compressing the ZnCl.sub.2 -graphite intercalation compound into a sheet form. This processing is suitable for mass production. As no sulphuric acid is used in this method, the method reduces environmental pollution and corrosion during use.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: April 2, 1996
    Inventors: Feiyu Kang, Yang Leng, Tong-Yi Zhang, Yiu-Wing Mai