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. 26, 1977
Filed:
May. 20, 1975
Applicant:
Inventors:
Kazuo Matsudo, Fukuyama, JA;
Takayoshi Shimomura, Fukuyama, JA;
Teruo Kurokawa, Fukuyama, JA;
Takao Arayama, Fukuyama, JA;
Assignee:
Nippon Kokan Kabushiki Kaisha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148 315 ; 148 36 ;
Abstract
An enameling cold rolled steel sheet with a high enamel adhesive property which requires no pickling step before enameling, characterized by an Mn content kept within 0.05 to 0.20%, and the relation between the surface roughness and the Mn content of said steel sheet satisfying at least one of the following two equations: