Metal treatment – Process of modifying or maintaining internal physical... – Carburizing or nitriding using externally supplied carbon or...
Reexamination Certificate
2011-01-25
2011-01-25
King, Roy (Department: 1733)
Metal treatment
Process of modifying or maintaining internal physical...
Carburizing or nitriding using externally supplied carbon or...
C148S230000, C420S034000
Reexamination Certificate
active
07875128
ABSTRACT:
A Ni-free stainless steel product excellent in workability and corrosion resistance and a method for manufacturing such stainless steel product. A ferritic stainless steel product containing 18 to 24% by mass of Cr and 0 to 4% by mass of Mo is brought into contact with an inert gas containing a nitrogen gas at 800 degrees C. or above to subject it to nitrogen absorption treatment so that the product is austenitized partially or wholly to obtain such nickel-free product.
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patent: 3118795 (1964-01-01), Kolbe et al.
patent: 7229506 (2007-06-01), Giordani et al.
patent: 05-311336 (1993-11-01), None
patent: 07-188733 (1995-07-01), None
patent: 2000-008145 (2000-01-01), None
patent: 2004-068115 (2004-03-01), None
Machine Translation of Kuroda et al. (JP 2004-068115).
Kuroda Daisuke
Miura Kazuma
Watanabe Mitsuo
Yanadori Shinichi
King Roy
McDermott Will & Emery LLP
Myodo Metal Co., Ltd.
National Institute for Materials Science
Roe Jessee R.
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