Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2003-04-25
2008-08-26
Wyszomierski, George (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C148S713000
Reexamination Certificate
active
07416623
ABSTRACT:
To provide a method for simply and easily causing only IGSCC to initiate and grow in a specimen, which can retain corrosion resistance through passivation, under atmospheric pressure in a short time, an aqueous solution of potassium tetrathionate is brought into contact with the specimen capable of retaining corrosion resistance through passivation. The potassium tetrathionate concentration, temperature and pH value of the aqueous solution are from 0.3 to 6 wt. %, from 5 to 60° C., and from 3 to 6, respectively.
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Spanish Search Report dated Sep. 10, 2007 (Four (4) pages).
Manabe Fumio
Yamauchi Kiyoshi
Babcock-Hitachi K.K.
Crowell & Moring LLP
Wyszomierski George
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