Patents by Inventor Minfang Zhang

Minfang 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).

  • Method of selecting structure of carbon nanotube through photoirradiation
    Patent number: 7803346
    Abstract: A method for selectively obtaining carbon nanotubes having specific structures by selectively obtaining carbon nanotubes having structures different from the structures of the carbon nanotubes to be vanished by irradiating carbon nanotubes with a light beam of single wavelength so as to have carbon nanotubes in specific electron states in the excited states, and oxidizing and combusting the carbon nanotubes in the excited states by an oxygen or an oxidizing agent so as to vanish the same.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: September 28, 2010
    Assignees: Japan Science and Technology Agency, NEC Corporation
    Inventors: Sumio Iijima, Masako Yudasaka, Minfang Zhang
  • METHOD OF FORMING PORE IN GRAPHITIC-CARBON NANOMATERIAL AND METHOD OF INTRODUCING OXYGEN-CONTAINING GROUP INTO PORE
    Publication number: 20100025222
    Abstract: Provided are a method of forming pores in a graphitic carbon nanomaterial and a method of introducing an oxygen-containing group into the pores, in which the rate of pore formation in the wall of a graphitic carbon nanomaterial can be heightened and the amount of the oxygen-containing group, especially the carboxyl group to be introduced can be significantly increased. The method of forming pores in a graphitic carbon nanomaterial of the invention is characterized by forming pores in the wall of a graphitic carbon nanomaterial in the presence of an oxidizing agent while the nanomaterial is irradiated with a light from a light source including a light having a wavelength at which the oxidizing agent is activated.
    Type: Application
    Filed: November 16, 2007
    Publication date: February 4, 2010
    Applicant: NEC CORPORATION
    Inventors: Sumio Iijima, Masako Yudasaka, Minfang Zhang
  • Method of selecting structure of carbon nanotube through photoirradiation
    Publication number: 20060013758
    Abstract: A method for selectively obtaining carbon nanotubes having specific structures by selectively obtaining carbon nanotubes having structures different from the structures of the carbon nanotubes to be vanished by irradiating carbon nanotubes with a light beam of single wavelength so as to have carbon nanotubes in specific electron states in the excited states, and oxidizing and combusting the carbon nanotubes in the excited states by an oxygen or an oxidizing agent so as to vanish the same.
    Type: Application
    Filed: April 1, 2003
    Publication date: January 19, 2006
    Inventors: Sumio Iijima, Masako Yudasaka, Minfang Zhang