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. 05, 2013
Filed:
Apr. 20, 2007
Hiroshi Okada, Miyagi, JP;
Yoshinori Sibata, Miyagi, JP;
Kuniyoshi Yokoo, Miyagi, JP;
Yuzo Mizobuchi, Miyagi, JP;
Kenji Omote, Miyagi, JP;
Yasuhiko Kasama, Miyagi, JP;
Hiroshi Okada, Miyagi, JP;
Yoshinori Sibata, Miyagi, JP;
Kuniyoshi Yokoo, Miyagi, JP;
Yuzo Mizobuchi, Miyagi, JP;
Kenji Omote, Miyagi, JP;
Yasuhiko Kasama, Miyagi, JP;
Other;
Abstract
In order to isolate and purify an endohedral fullerene, a solvent washing was performed using toluene to concentrate the endohedral fullerene in a residual, but endohedral fullerene could not be efficiently purified because impurities other than the endohedral fullerene could not be sufficiently removed. Thus, the endohedral fullerene is isolated and purified by using a solvent such as chloronaphthalene or tetralin having a high solubility for the endohedral fullerene and concentrating the endohedral fullerene in the solvent. The endohedral fullerene isolated and purified by solvent extraction has a cluster structure where the endohedral fullerene is surrounded with empty fullerenes. Thus, this endohedral fullerene is highly stable and is a useful material applicable to various fields such as medical care and electronics.