Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2006-11-02
2009-11-17
Turner, Archene (Department: 1794)
Stock material or miscellaneous articles
Composite
Of inorganic material
C065S374100, C065S374110, C249S134000, C428S336000, C428S698000, C428S699000, C428S704000
Reexamination Certificate
active
07618719
ABSTRACT:
A hard coating combining excellent mold releasability with respect to glass with excellent durability at high temperature environment of 600° C. or more, and a glass molding die having the hard coating are provided. A glass molding die has a hard coating formed on a molding surface of a base. The hard coating includes one or two of W and V, and B, C and N; wherein when a composition of the coating is expressed as Wa1Va2BbCcNd, 0.1≦a1+a2≦0.5, 0.05≦b≦0.5, 0.02≦c≦0.15, 0.05≦d≦0.5, and a1+a2+b+c+d=1 are given. The hard coating can be formed on the molding surface of the base via an intermediate layer including an amorphous CrSiN film.
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Ito Hirotaka
Yamamoto Kenji
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd).
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Turner Archene
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