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:
Sep. 05, 2017
Filed:
Sep. 12, 2012
Applicants:
Haruji Morita, Hanno, JP;
Tsuneo Tate, Tokyo, JP;
Akira Shiozawa, Okaya, JP;
Inventors:
Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/08 (2006.01); C23C 22/83 (2006.01); C23C 8/42 (2006.01); C23C 22/47 (2006.01); C23C 8/80 (2006.01); C23C 22/82 (2006.01);
U.S. Cl.
CPC ...
C23C 8/42 (2013.01); C23C 8/80 (2013.01); C23C 22/08 (2013.01); C23C 22/47 (2013.01); C23C 22/83 (2013.01);
Abstract
This surface treatment method comprises a rustproofing step, a rinsing step, and a cleaning step. In the rustproofing step, a rustproofing liquid containing orthophosphoric acid and an organic acid is used to perform a rustproofing treatment on the surface of a steel material. In the rinsing step, a treatment liquid containing an oxo acid salt of a transition metal is used to perform a rinsing treatment on the surface of the steel material. In the cleaning step, the surface of the steel material that has undergone the rinsing step is subjected to a cleaning treatment.