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. 19, 2002
Filed:
Jun. 16, 1999
Applicant:
Inventors:
Masanori Okabayashi, Uji, JP;
Katsunori Matsuda, Nara, JP;
Kazuo Okamura, Joyo, JP;
Seita Takahashi, Hirakata, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 1/112 ; C25D 5/48 ;
U.S. Cl.
CPC ...
C25D 1/112 ; C25D 5/48 ;
Abstract
A method for making an anode foil for an aluminum electrolytic capacitor which comprises a first anodizing step of forming an anodized film on the surface of an aluminum foil, an immersion treatment step of immersing this aluminum foil in an aqueous solution containing alkaline metal ions, a step of feeding an electric current to the aluminum foil from a current feeding cell having a current feeding solution 6 and a current feeding electrode connected to the anode of a direct-current power source , and a second anodizing step of forming by applying a higher voltage than in the first anodizing step.