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. 12, 2007
Filed:
Jul. 11, 2002
Hiroshi Kihira, Chiba, JP;
Yasumori Fujii, Tokyo, JP;
Yoshiyuki Harada, Chiba, JP;
Takashi Kusunoki, Tokyo, JP;
Norihito Fujikawa, Tokyo, JP;
Hiroshi Takezawa, Tokyo, JP;
Hiromichi Yasunami, Tokyo, JP;
Kazumi Matsuoka, Chiba, JP;
Hiroshi Kihira, Chiba, JP;
Yasumori Fujii, Tokyo, JP;
Yoshiyuki Harada, Chiba, JP;
Takashi Kusunoki, Tokyo, JP;
Norihito Fujikawa, Tokyo, JP;
Hiroshi Takezawa, Tokyo, JP;
Hiromichi Yasunami, Tokyo, JP;
Kazumi Matsuoka, Chiba, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A predicted corrosion amount of a painted or unpainted atmospheric corrosion resistant steel is calculated by using extrinsic corrosion information including weather observation data, an amount of airborne salt, and an amount of sulfur oxide in a planned location for use where the atmospheric corrosion resistant steel is to be used, and intrinsic corrosion information on components of the atmospheric corrosion resistant steel. The weather observation data on this occasion preferably includes the annual wetness time, annual mean wind speed, and annual mean temperature. Moreover, it is preferable to calculate a corrosivity index, estimate a first-year corrosion amount of the atmospheric corrosion resistant steel and a rust stabilization index from the corrosivity index, and calculate a corrosion amount accumulated over time.