Assignee
VALLOUREC IND
FR5 patents
Top patents by PatentIndex Score
US5137310AAug 11, 1992
Assembly arrangement using frustoconical screwthreads for tubes
VALLOUREC IND92 citations95
US5311127AMay 10, 1994
Method and apparatus for inspecting metal tubes employing magnetically induced eddy currents
VALLOUREC IND26 citations89
US5253902AOct 19, 1993
Anti-seizing surface coating for assembly means for tubes by threadings and process for producing such a coating
VALLOUREC IND40 citations87
US4869311ASep 26, 1989
Device permitting introduction of a fluid into the cooling chamber of a rotary mould
VALLOUREC IND3 citations61
US4957542ASep 18, 1990
Process for treating liquid steels by injecting gas through the ladle bottom
VALLOUREC IND2 citations59