Patent classifications
C
CHEMISTRY; METALLURGY
Load children
C21
METALLURGY OF IRON
Load children
C21C
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
Load children
5/00
Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel; or stainless steel
Load children Filter patents View analytics View as hierarchy
C21C5/52
Manufacture of steel in electric furnaces
Load children Filter patents View analytics View as hierarchy
C21C5/5229
in a direct current [DC] electric arc furnace
Load children Filter patents View analytics View as hierarchy
C21C2005/5235
with bottom electrodes
Filter patents View analytics View as hierarchy