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:
Jun. 28, 1994
Filed:
Oct. 28, 1992
Akira Yasuda, Chiba, JP;
Takaaki Hira, Chiba, JP;
Toshitake Hanazawa, Kurashiki, JP;
Hiroaki Ueno, Kurashiki, JP;
Yoshihisa Serizawa, Toyota, JP;
Tadaaki Morishita, Toyota, JP;
Kazuyoshi Sato, Toyota, JP;
Kawasaki Steel Corporation, Hyogo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
In a hot-dip zinc-coated steel sheet exhibiting excellent press die sliding characteristics and obtained by performing a molten galvanization and then skin pass rolling on a surface of the steel sheet, a galvanized layer has a three-dimensional average surface roughness ranging from 0.7 .mu.m to 1.4 .mu.m, and a skewness (S) of the amplitude probability distribution of the surface roughness, which is defined by the following equation (1), ranging from 0.1 to -0.3: