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:
Jan. 28, 1992
Filed:
Apr. 26, 1990
Nobukazu Suzuki, Ibaraki, JP;
Seiji Bando, Ibaraki, JP;
Hirofumi Kurayasu, Sanda, JP;
Kazunobu Okawa, Ibaraki, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
In a method for manufacturing a one-sided electroplated steel sheet by electroplating of a steel sheet in an acidic bath, an adsorption film-forming organic inhibitor is added to either (a) the electroplating solution or (b) a pickling solution used prior to electroplating and/or rinse water used for rinsing the pickled sheet in a concentration of at least 1 ppm, or it is added to (c) both the plating solution and the pickling solution and/or rinse water in a concentration of at least 0.1 ppm. The steel sheet is then passed through the inhibitor-containing solution, thereby providing a one-sided electroplated steel sheet having improved appearance and adaptability to phosphating on the unplated side.