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:
Dec. 09, 2014
Filed:
Apr. 10, 2012
Hisato Noro, Kanagawa, JP;
Yoichiro Yamanaka, Hiroshima, JP;
Junichi Kitagawa, Hiroshima, JP;
Yoshihiko Yasue, Chiba, JP;
Hisao Yasuhara, Chiba, JP;
Hisato Noro, Kanagawa, JP;
Yoichiro Yamanaka, Hiroshima, JP;
Junichi Kitagawa, Hiroshima, JP;
Yoshihiko Yasue, Chiba, JP;
Hisao Yasuhara, Chiba, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A method to evaluate the corrosion resistance of a can to a content includes filling the can with the content to form a specimen, setting the specimen in an apparatus capable of blocking an outside atmosphere from entering the specimen, optionally saturating the content with nitrogen gas to expel dissolved oxygen present in the content, thereafter while maintaining the temperature of the content at a constant temperature in the range of 25 to 60° C., applying a constant potential that is more anodic than an immersion potential by 50 mV to 200 mV to the can of the specimen, and evaluating the corrosion resistance of the can to the content based on the accumulated amount of electricity generated during a time appropriately selected from 6 to 48 hours immediately after the application of the constant potential.