Electrolysis: processes – compositions used therein – and methods – Electrolytic erosion of a workpiece for shape or surface... – Simple alternating current
Reexamination Certificate
2006-06-20
2006-06-20
King, Roy (Department: 1742)
Electrolysis: processes, compositions used therein, and methods
Electrolytic erosion of a workpiece for shape or surface...
Simple alternating current
C205S666000
Reexamination Certificate
active
07063780
ABSTRACT:
The present invention provides a method for indirect-electrification-type continuous electrolytic etching of a metal strip suitable for producing a low-core-loss, grain-oriented silicon steel sheet not susceptible to the deterioration of core loss after stress-relief annealing, and an apparatus for the indirect-electrification-type continuous electrolytic etching. It is a method for indirect-electrification-type continuous electrolytic etching of a metal strip and an apparatus for the same for continuously forming grooves by indirect-electrification-type electrolytic etching on a metal strip on which an etching mask is formed in etching patterns on one or both surfaces, wherein: plural electrodes of an A series and a B series are arranged alternatively, at least in a pair, in said order in the travelling direction of the metal strip so that they face the surface to be etched of the metal strip on which the etching patterns are formed; the space between the metal strip and the group of the electrodes is filled with an electrolyte; and voltage is applied across the A series and B series electrodes.
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European Search Report with abstract, EP 03 00 4385, dated Oct. 27, 2003.
Fujikura Masahiro
Koga Shigenobu
Mogi Hisashi
Nomura Naruhiko
Yamazaki Shuichi
Alexander Michael P.
Baker & Botts LLP
King Roy
Nippon Steel Corporation
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