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. 13, 1990
Filed:
Aug. 02, 1989
Applicant:
Inventors:
Hiromu Kunugihara, Kyoto, JP;
Kazuo Okamura, Joyo, JP;
Fumio Kudo, Joyo, JP;
Ryoichi Shimatani, Kyoto, JP;
Nobuyoshi Kanzaki, Joyo, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; B44C / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
156665 ; 148 / ; 204 33 ; 204 351 ; 204 383 ;
Abstract
In the method for making electrode foil for an aluminum electrolyte capacitor, in order to obtain a formation layer of aluminum foil having superior waterproof nature and good stability, surface-roughened aluminum foil has hydration treatment, first formation treatment, dipping in aqueous solution of ammonium dihydrogen phosphate and second formation.