Patents by Inventor Shik C. Tsang

Shik C. Tsang 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).

  • Method of opening and filling carbon nanotubes
    Patent number: 6090363
    Abstract: Method of making carbon nanotubes open on at least one end wherein capped nanotubes are treated with an oxidizing acid such as nitric acid. The treatment is effective to open at least 50% of the nanotubes on at least one end.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: July 18, 2000
    Assignee: ISIS Innovation Limited
    Inventors: Malcolm L. H. Green, Shik C. Tsang
  • Uncapped and thinned carbon nanotubes and process
    Patent number: 5346683
    Abstract: Uncapped and thinned carbon nanotubes are produced by reaction with a flowing reactant gas capable of reaction selectively with carbon atoms in the capped region of nanotubes. The uncapped and thinned nanotubes provide open compartments for insertion of chemicals and exhibit enhanced surface area with modified physical and chemical properties.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: September 13, 1994
    Assignee: Gas Research Institute
    Inventors: Malcolm L. H. Green, Shik C. Tsang