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. 16, 2015
Filed:
Mar. 10, 2009
Applicants:
Manabu Inoue, Tokyo, JP;
Ryo Nakajima, Tokyo, JP;
Kimitaka Watanabe, Tokyo, JP;
Toyoji Watanabe, Fuji, JP;
Fumie Watanabe, Fuji, JP;
Yutaka Watanabe, Fuji, JP;
Takeshi Watanabe, Fuji, JP;
Inventors:
Manabu Inoue, Tokyo, JP;
Ryo Nakajima, Tokyo, JP;
Kazuhiro Watanabe, Tokyo, JP;
Kimitaka Watanabe, Tokyo, JP;
Assignee:
DIPSOL CHEMICALS CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/33 (2006.01); C23C 22/17 (2006.01); C23C 22/53 (2006.01); C23C 22/47 (2006.01);
U.S. Cl.
CPC ...
C23C 22/17 (2013.01); C23C 22/47 (2013.01); C23C 22/53 (2013.01); C23C 2222/10 (2013.01);
Abstract
It is an object of the present invention to provide a processing solution used for forming a hexavalent chromium free, black conversion film, which is applied onto the surface of zinc or zinc alloy plating layers, and which has corrosion resistance identical to or higher than that achieved by the conventional hexavalent chromium-containing conversion film.