Inventor
LUEHRSEN ERNST
DE24 patents
Patents
24 patentsUS5173199ADec 22, 1992
Apparatus for use in replacing a worn pouring pipe and for adjusting molten metal flow through a pouring pipe
DIDIER WERKE AG14 citations73
US5173242ADec 22, 1992
Means and method for forming a sealed connection
DIDIER WERKE AG7 citations73
US5037017AAug 6, 1991
Horizontal or vertical rotary valve for a metallurgical vessel
DIDIER WERKE AG5 citations73
US4949886AAug 21, 1990
Horizontal or vertical rotary valve for a metallurgical vessel
DIDIER WERKE AG10 citations73
US4913324AApr 3, 1990
Rotary valve for a metallurgical vessel and rotor and stator therefor
DIDIER WERKE AG10 citations73
US5072864ADec 17, 1991
Carbon-containing wearable refractory parts
DIDIER WERKE AG12 citations72
US4717128AJan 5, 1988
Refractory plate assembly including wear and erosion resistant insert surrounded by plural component base structure
DIDIER WERKE AG10 citations72
US4508324AApr 2, 1985
Fastening means for a closure plate on a sliding shutter outlet in a vessel which contains molten metal
DIDIER WERKE AG17 citations72
US5092500AMar 3, 1992
Refractory discharge device with separate external reinforcement member
DIDIER WERKE AG14 citations71
US5429283AJul 4, 1995
Immersion nozzle formed of separate members
DIDIER WERKE AG10 citations70
US4290589ASep 22, 1981
Teeming pipe for use at the outlet of a melt container
DIDIER WERKE AG12 citations70
US5303905AApr 19, 1994
Refractory ceramic stopper, apparatus for support thereof, and assembly thereof
DIDIER WERKE AG13 citations68
US4268015AMay 19, 1981
Bottom outlet or discharge for use in metallurgical vessels for steel melts, particularly tundishes
DIDIER WERKE AG7 citations65
US5413744AMay 9, 1995
Process for inductive heating of ceramic shaped parts
DIDIER WERKE AG5 citations62
US5190716AMar 2, 1993
Process for manufacturing and preheating a shaped ceramic part
DIDIER WERKE AG3 citations62
US5025961AJun 25, 1991
Refractory shutoff assembly capable of improved emergency closing
DIDIER WERKE AG4 citations61
US5058784AOct 22, 1991
Closing and/or regulating apparatus for tapping molten metal from a metallurgical vessel
DIDIER WERKE AG2 citations59
US4923225AMay 8, 1990
Assembly for connecting a metal member to a ceramic refractory member
DIDIER WERKE AG6 citations58
US4634685AJan 6, 1987
Refractory article suitable for casting molten metal
DIDIER WERKE AG6 citations58
US5942316AAug 24, 1999
Multi-layer refractory wear body
DIDIER WERKE AG5 citations57
US5657997AAug 19, 1997
Fixing device for a ceramic sealing plate
DIDIER WERKE AG1 citations52
US5083688AJan 28, 1992
Rotary valve for a metallurgical vessel and rotor and stator therefor
DIDIER WERKE AG1 citations52
US5106060AApr 21, 1992
Components for forming a closing and/or regulating apparatus for tapping molten metal from a metallurgical vessel
DIDIER WERKE AG0 citations51
US5080265AJan 14, 1992
Apparatus for closing and/or regulating the tapping of molten metal
DIDIER WERKE AG0 citations40