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:
May. 14, 1991
Filed:
Jun. 02, 1989
Applicant:
Inventors:
June-sang Siak, Warren, MI (US);
Otto J Klingenmaier, Warren, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F / ; F28F / ;
U.S. Cl.
CPC ...
165133 ; 1651341 ; 165905 ;
Abstract
An automotive air conditioning system evaporator core is formed of an aluminum alloy and has a biocidal coating comprising a zinc layer deposited onto said aluminum alloy and an outermost elemental copper plate overlying said zinc layer. During air cooling operations, slightly acidic condensate accumulating on the surface reacts with the copper to form cupric ions that inhibit microbial growth.