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:
Oct. 18, 1994
Filed:
Jan. 15, 1993
Applicant:
Inventors:
Tetsuaki Tsuda, Nishinomiya, JP;
Yasuhiro Yamamoto, Kobe, JP;
Junichi Uchida, Ashiya, JP;
Hirohisa Seto, Kobe, JP;
Kunihiro Fukui, Kawanishi, JP;
Shinya Hikino, Amagasaki, JP;
Assignee:
Sumitomo Metal Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428629 ; 4284722 ; 428633 ; 428935 ;
Abstract
A material for producing far-infrared radiation is disclosed. The material comprises a substrate and an Al--Mn alloy-derived oxide surface layer on the substrate, the oxide surface layer being porous with an average pore diameter of 0.01-2.0 micrometers and a porosity of 10.sup.3 -10.sup.12 pores/cm.sup.2, the weight ratio of Mn/Al of the oxide surface layer being 0.001-2.0, and the thickness of the oxide surface layer being 0.1-100 micrometers.