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:
Aug. 09, 1994
Filed:
Aug. 30, 1991
Applicant:
Inventors:
Masatsugu Maejima, Tokyo, JP;
Koichi Saruwatari, Musashino, JP;
Akihito Kurosaka, Tokyo, JP;
Mamoru Matsuo, Fukaya, JP;
Hiroyoshi Gunji, Tsuchiura, JP;
Toshiki Muramatsu, Fukaya, JP;
Assignees:
Fujikura Ltd., Tokyo, JP;
Sky Aluminium Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148415 ; 148549 ; 148698 ; 148702 ; 205106 ; 205109 ; 205207 ; 420547 ; 420550 ; 428632 ; 428640 ;
Abstract
An infrared radiation element and a process for producing the same. An aluminum alloy material consists essentially of 0.3 to 4.3 weight % of Mn, balance Al, and impurities. The alluminum alloy material is heated for dispersing a precipitate of an Al--Mn intermetallic compound at a density of at a minimum 1.times.10.sup.5 /mm.sup.3 for a size of 0.1 .mu.m to 3 .mu.m. The heated aluminum alloy material is anodized to form an anodic oxide layer thereon.