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:
Jul. 04, 2000
Filed:
Jul. 29, 1999
Applicant:
Inventors:
Toshio Inbe, Kanagawa-ken, JP;
Shinji Sasakuma, Tokyo-to, JP;
Yasutake Mino, Hyogo-ken, JP;
Satoshi Ikeda, Kanagawa-ken, JP;
Assignee:
Nippon Paint Co., Ltd., Osaka-fu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ; C23G / ; C23G / ;
U.S. Cl.
CPC ...
510254 ; 510255 ; 510270 ; 510271 ; 510421 ; 510508 ; 134-3 ; 134 41 ;
Abstract
The present invention provides an aqueous cleaning solution for aluminum-based metals which comprises an inorganic acid in an amount to provide a pH value of 2 or less, an oxidized form metal ion and a surfactant represented by the following formula (I)