The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2009
Filed:
May. 11, 2005
Applicants:
Kyeong-taek Jung, Suwon-si, KR;
Seok-hyun Cho, Seoul, KR;
Young-hee Lee, Suwon-si, KR;
Kay-hyeok an, Suwon-si, KR;
Inventors:
Kyeong-Taek Jung, Suwon-si, KR;
Seok-Hyun Cho, Seoul, KR;
Young-Hee Lee, Suwon-si, KR;
Kay-Hyeok An, Suwon-si, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 31/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
Semiconducting type carbon nanotubes are efficiently separated from a mixture of semiconducting and metallic carbon nanotubes in a simple manner, by way of treating the carbon nanotube mixture with an organic solution containing nitronium ions, filtering the resulting mixture to recover remaining solids, and heat-treating the solids.