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:
Apr. 02, 2013
Filed:
Jan. 20, 2011
Makoto Okai, Tokorozawa, JP;
Motoyuki Hirooka, Kumagaya, JP;
Yasuo Wada, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A substrate having a graphene film grown thereon according to the present invention includes: a base substrate; a patterned aluminum oxide film formed on the base substrate, the patterned aluminum oxide film having an average composition of AlO(where x is 0 or more); and a graphene film preferentially grown only on the patterned aluminum oxide film, the graphene film having one or more graphene atomic layers, the graphene film growing parallel to a surface of the patterned aluminum oxide film, the graphene film having an electrical conductivity of 1×10S/cm or more measured by a four-probe resistive method using an inter-voltage-probe distance of 0.2 mm.