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. 18, 2008
Filed:
Aug. 20, 2004
Hiroyuki Tomiyama, Tendo, JP;
Masatoshi Sato, Tendo, JP;
Satoshi Hachiya, Tendo, JP;
Kouichi Honma, Mitsuke, JP;
Hiroyuki Tomiyama, Tendo, JP;
Masatoshi Sato, Tendo, JP;
Satoshi Hachiya, Tendo, JP;
Kouichi Honma, Mitsuke, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A substrate () made by a thin magnesium plate having a thickness of at most 60 μm and bent in a predetermined shape is subjected to anodic oxidation using an alkali-mixture aqueous solution containing metallic salt with a pH 12 or more so that porous anodic oxide coatings () are formed on the surfaces thereof. A first treated substrate () having the anodic oxide coatings () is immersed in a bath of a dye (B), which fills the pores (A) of the anodic oxide coatings () and dyes the substrate, providing a second treated substrate (). The second treated substrate () is subjected to electrodeposition using electrodeposition paint made mainly of acrylic resin, forming electrodeposition coatings () on the anodic oxide coatings (). A magnesium diaphragm is thereby produced, which is thin and has sufficient sensitivity and desired characteristics. The diaphragm thus dyed has metallic gloss and hence acquires a high decorative value.