Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2005-06-14
2005-06-14
Koehler, Robert R. (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S630000, C428S631000, C428S663000, C428S680000, C428S682000, C428S450000, C148S529000, C148S530000, C148S537000, C427S419600
Reexamination Certificate
active
06905783
ABSTRACT:
Steel sheet for porcelain enameling having excellent workability yet capable of providing an enamel layer having excellent adhesion with the steel sheet on direct-on enameling once and still free of black specks defects, a method for producing the same, as well as a porcelain enamel product and the method for producing the same are provided, in which low carbon Al-killed steel sheet, high oxygen steel sheet, Ti-added steel sheet, Nb-added steel sheet, Ti—Nb-added steel sheet or B-added steel sheet is used. A steel sheet for porcelain enameling is produced by applying Ni—Mo alloy plating to the low carbon Al-killed steel sheet, high oxygen steel sheet, Ti-added steel sheet, Nb-added steel sheet, Ti—Nb-added steel sheet or B-added steel sheet having specified components and composition ratio, and after performing heat treatment thereto to control the content of Ni, Mo, and Fe that are present on the surface of the steel sheet in a predetermined range, porcelain enamel is applied and fired.
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Kojima Hirotatsu, “Production of Rolled Steel Sheet for Porcelain Enameling,” Publication No.: 06-279865, Oct. 4, 1994, On-line JAPIO Abstract of Japanese patent.
Sayanagi Shiro, “Production of Steel Sheet for Porcelain Enameling Excellent in Deep Drawability,” Publication No.: 07-118755, May 9, 1995, On-line JAPIO Abstract of Japanese patent.
Fujimoto Junichi
Hamada Toshihira
Hayashida Takahiro
Jono Yoshihiro
Komai Masao
Browdy and Neimark , P.L.L.C.
Ferro Enamels (Japan) Limited
Koehler Robert R.
Toyo Kohan Co. Ltd.
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