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:
Nov. 24, 2015
Filed:
Feb. 08, 2011
Akinobu Isurugi, Osaka, JP;
Kiyoshi Minoura, Osaka, JP;
Hidekazu Hayashi, Osaka, JP;
SHARP KABUSHIKI KAISHA, Osaka, JP;
Abstract
One of the objects of the present invention is to provide a method for readily manufacturing a seamless mold in the form of a roll which has a porous alumina layer over its surface. The mold manufacturing method of the present invention is a method for manufacturing a mold which has a porous alumina layer over its surface, including the steps of: providing a hollow cylindrical support; forming an insulating layer on an outer perimeter surface of the hollow cylindrical support; depositing aluminum on the insulating layer to form an aluminum film; and anodizing a surface of the aluminum film to form a porous alumina layer which has a plurality of minute recessed portions.