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:
Apr. 01, 1986
Filed:
Oct. 03, 1984
Applicant:
Inventors:
Takehisa Mizunuma, Kawasaki, JP;
Seizaburo Abe, Yokohama, JP;
Jiro Ohno, Yokohama, JP;
Hisashi Kobayashi, Yokohama, JP;
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ; C23F / ;
U.S. Cl.
CPC ...
148 315 ; 148-621 ; 428623 ;
Abstract
In order to obtain a film having a low electric resistance and a good selective absorption property of solar radiation, good rust proofing and good weldability, a stainless steel is dipped in a chemical conversion bath, in which sodium bichromate or potassium bichromate is mixed with sulfuric acid at a predetermined proportion to one another, in accordance with the method of the present invention. The product film of the present invention comprises metal oxides or metal hydroxides with metal (Fe+Cr) finely dispersed therein.