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. 08, 2014
Filed:
Dec. 23, 2009
Seiji Amakusa, Kasugai, JP;
Tetsuyoshi Naito, Okazaki, JP;
Norihiro Tateiwa, Chita-gun, JP;
Takanobu Iwade, Okazaki, JP;
Hiroshi Ohmi, Anjo, JP;
Shinji Kurano, Chiryu, JP;
Koichi Yokoyama, Nagoya, JP;
Seiji Amakusa, Kasugai, JP;
Tetsuyoshi Naito, Okazaki, JP;
Norihiro Tateiwa, Chita-gun, JP;
Takanobu Iwade, Okazaki, JP;
Hiroshi Ohmi, Anjo, JP;
Shinji Kurano, Chiryu, JP;
Koichi Yokoyama, Nagoya, JP;
Denso Corporation, Kariya, JP;
Abstract
A method for anodizing aluminum, wherein an object () made of aluminum or an aluminum alloy is anodized in an electrolytic solution (), and thereby an anodized aluminum film is formed on a surface of the object (), is provided. The electrolytic solution () is comprised of at least one acid selected from organic acids having two or more carboxylic groups, moves at an average speed of 15 cm/sec or less along at least an outer surface of the object (). The anodization is performed under conditions that a temperature of the outer surface of the object () is 80° C. or less, and current density is in a range from 10 to 170 A/dm.