Metal treatment – Process of modifying or maintaining internal physical... – With casting or solidifying from melt
Reexamination Certificate
2007-10-30
2007-10-30
Yee, Deborah (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
With casting or solidifying from melt
C148S546000, C148S547000, C148S653000, C148S654000, C148S661000
Reexamination Certificate
active
11075938
ABSTRACT:
A flat rolled, high strength, formable steel product has a yield strength of at least about 100 ksi. The product has sufficient formability such that it can withstand a longitudinal or transverse 180° bend of less than 1.0 times its thickness and is preferably comprised of a high strength, low alloy steel composition containing a vanadium-nitride microalloy. The steel product is preferably produced by cold rolling a first steel product having a yield strength of at least about 70 ksi and a n-value from about 0.1 to about 0.16. Cold rolling of the first steel product reduces its thickness and increases its yield strength to at least 100 ksi.
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Johnston James W.
Thomson Barton A.
Algoma Steel Inc.
Ladas & Parry LLP
Yee Deborah
LandOfFree
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