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. 18, 1982
Filed:
Dec. 29, 1980
Applicant:
Inventors:
Shiro Terai, Nagoya, JP;
Toshio Amitani, Nagoya, JP;
Toshio Suzuki, Nagoya, JP;
Katsuhiko Hirata, Nagoya, JP;
Makoto Andoh, Nagoya, JP;
Assignee:
Sumitomo Light Metal Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; C23F / ;
U.S. Cl.
CPC ...
148-62 ; 148-627 ; 148-63 ; 148-616 ; 427160 ;
Abstract
A selective absorber of solar energy using an aluminum alloy sheet as a substrate on which a chemical conversion coating is initially formed. The coating is subsequently oxidized into a dark-colored coating of selective solar absorption nature. Also disclosed is a process which comprises a chemical conversion treatment step for formation of the initial coating, and a high-temperature oxidation treatment step for final formation of the selective coating for solar energy absorption.