Patents by Inventor Cheol-min Yang

Cheol-min Yang 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 isolating semiconducting carbon nanotubes
    Patent number: 7387735
    Abstract: A method of isolating semiconducting carbon nanotubes includes mixing carbon nanotubes with a mixed acid solution of nitric acid and sulfuric acid to obtain a dispersion of carbon nanotubes, stirring the carbon nanotube dispersion, and filtering the carbon nanotube dispersion. Functional groups remaining on the filtered carbon nanotubes may then be removed, e.g., via heating.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: June 17, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Wan-jun Park, Young-hee Lee, Cheol-min Yang
  • Method of isolating semiconducting carbon nanotubes
    Publication number: 20050214198
    Abstract: A method of isolating semiconducting carbon nanotubes includes mixing carbon nanotubes with a mixed acid solution of nitric acid and sulfuric acid to obtain a dispersion of carbon nanotubes, stirring the carbon nanotube dispersion, and filtering the carbon nanotube dispersion. Functional groups remaining on the filtered carbon nanotubes may then be removed, e.g., via heating.
    Type: Application
    Filed: December 30, 2004
    Publication date: September 29, 2005
    Inventors: Wan-jun Park, Young-hee Lee, Cheol-min Yang