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, 1996
Filed:
Jul. 09, 1993
Applicant:
Inventors:
Yasuaki Isobe, Nagoya, JP;
Hiroyoshi Mizuno, Anjou, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428469 ; 428336 ; 428470 ; 428471 ; 4284722 ; 106 1416 ; 106 1421 ; 106 1444 ; 252388 ; 2523891 ; 25238961 ; 25238962 ;
Abstract
A chemical conversion coating formed on a surface of an aluminum substrate. The coating comprises a composite material formed by a reaction of a nitrate or sulfate of an alkali metal or alkaline earth metal and an organic compound that can form a compound with aluminum or exhibit a weak basicity an an aqueous aluminum treating liquid comprising the nitrate or sulfate of alkali metal or alkaline earth metal and the organic compound, with the aluminum substrate. The coating is corrosion-resistant, bacteria-proof or fungiproof, and the surface is of a heat exchanger, etc.