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:
Mar. 28, 2017
Filed:
Dec. 09, 2013
Mitsubishi Rayon Co., Ltd., Tokyo, JP;
Kanagawa Academy of Science and Technology, Kawasaki-shi, Kanagawa, JP;
Hiroshi Onomoto, Otake, JP;
Jitsuo Hirohata, Otake, JP;
Eiko Okamoto, Otake, JP;
Yuji Matsubara, Otake, JP;
Masashi Ikawa, Otake, JP;
Hideki Masuda, Tokyo, JP;
Takashi Yanagishita, Tokyo, JP;
MITSUBISHI RAYON CO., LTD., Tokyo, JP;
KANAGAWA ACADEMY OF SCIENCE AND TECHNOLOGY, Kanagawa, JP;
Abstract
This method for producing anodic porous alumina such that an oxide coating film having a plurality of minute pores is formed at the surface of an aluminum substrate is characterized by containing: a step (a) for immersing the aluminum substrate in an electrolytic liquid resulting from mixing a plurality of acids; a step (b) for imposing a voltage on the aluminum substrate immersed in the electrolytic liquid; a step (c) for holding the aluminum substrate in the state of being immersed in the electrolytic liquid essentially without imposing a voltage on the aluminum substrate; and a step (d) for alternately repeating step (b) and step (c). By means of the present invention, it is possible using a simple device and with few steps to provide a method that easily produces anodic porous alumina such that an oxide coating film having a plurality of minute pores is formed at the surface of an aluminum substrate.