Patents by Inventor Shuko Numata

Shuko Numata 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).

  • Aggregate of carbon nanotubes, dispersion thereof and conductive film using the same
    Patent number: 8834826
    Abstract: Provided is an aggregate of carbon nanotubes satisfying (1) there is a 2? peak at 24°±2° by X-ray powder diffraction analysis; (2) a height ratio (G/D ratio) of G band to D band by Raman spectroscopic analysis of wavelength 532 nm is 30 or more; and (3) a combustion peak temperature is from 550° C. to 700° C. The present invention provides an aggregate of carbon nanotubes excellent in dispersibility while high quality, giving a film, molded article, membrane or the like having excellent characteristics.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 16, 2014
    Assignee: TORAY Industries, Inc.
    Inventors: Kenichi Sato, Masahito Yoshikawa, Naoyo Okamoto, Shuko Numata
  • Aggregate of carbon nanotubes, dispersion thereof and conductive film using the same
    Publication number: 20090001326
    Abstract: Provided is an aggregate of carbon nanotubes satisfying (1) there is a 2? peak at 24°±2° by X-ray powder diffraction analysis; (2) a height ratio (G/D ratio) of G band to D band by Raman spectroscopic analysis of wavelength 532 nm is 30 or more; and (3) a combustion peak temperature is 550° C. or more, and 700° C. or less.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 1, 2009
    Inventors: Kenichi Sato, Masahito Yoshikawa, Naoyo Okamoto, Shuko Numata