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:
Dec. 07, 2004
Filed:
Mar. 12, 2002
Hirofumi Takikawa, Toyohashi-shi Aichi-ken, JP;
Yoshihiko Hibi, Toyohashi, JP;
Shigeo Itoh, Mobara, JP;
Other;
Abstract
Described herein is a method of preparing nano-carbon; a method of preparing an electron emitting source by supporting the soot; and an apparatus for preparing the same. A torch electrode of an arc torch as a first electrode is placed opposite to a material to be arced using graphite as a second electrode. A voltage is applied between the torch electrode and an edge portion of the material to be arced to generate are discharge, to evaporate the edge portion of the material to be arced exposed to the arc discharge, to generate soot. The soot thus generated is deposited on the surface of a substrate opposite to an arc discharge-generating area through a mask having a patterned opening.