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:
May. 26, 2009
Filed:
Mar. 16, 2005
Anne Dailly, Pasadena, CA (US);
Channing Ahn, Pasadena, CA (US);
Rachid Yazami, Los Angeles, CA (US);
Brent T. Fultz, Pasadena, CA (US);
Anne Dailly, Pasadena, CA (US);
Channing Ahn, Pasadena, CA (US);
Rachid Yazami, Los Angeles, CA (US);
Brent T. Fultz, Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
Centre National de la Recherche Scientifique, Paris, FR;
Abstract
Methods of purifying samples are provided that are capable of removing carbonaceous and noncarbonaceous impurities from a sample containing a carbon material having a selected structure. Purification methods are provided for removing residual metal catalyst particles enclosed in multilayer carbonaceous impurities in samples generate by catalytic synthesis methods. Purification methods are provided wherein carbonaceous impurities in a sample are at least partially exfoliated, thereby facilitating subsequent removal of carbonaceous and noncarbonaceous impurities from the sample. Methods of purifying carbon nanotube-containing samples are provided wherein an intercalant is added to the sample and subsequently reacted with an exfoliation initiator to achieve exfoliation of carbonaceous impurities.