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:
Oct. 30, 2007
Filed:
Mar. 23, 2005
Applicants:
Aya Imada, Atsugi, JP;
Tohru Den, Setagaya-ku, JP;
Tatsuya Saito, Ebina, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C 1/22 (2006.01); G11B 5/706 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing a structure having a porous layer is provided. The process forms the porous layer with high thickness-controllability. The process comprises steps of preparing a layered product having, on a substrate, a first nonporous layer and a second nonporous layer different in constituting material composition from the first layer; anodizing the layered product to form pores in the first nonporous layer and the second nonporous layer; and removing the second nonporous layer having pores formed therein from the layered product.