Vallourec
Records under this name other than patents Vallourec holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,019,394 | Drive device for clamp holder carriages of a continuously operating pilger mill Term ended Term ended no later than Apr 26, 1997 · Low confidence | Term ended | Term ended no later than Apr 26, 1997 | Low confidence |
| US 4,326,398 | Apparatus to equalize in height, by hammering, the line of welding of longitudinally welded tubes Term ended Term ended no later than Apr 27, 2002 · Low confidence | Term ended | Term ended no later than Apr 27, 2002 | Low confidence |
| US 4,353,238 | Method for manufacture of seamless metal tubing by continuous rolling Term ended Term ended no later than Oct 12, 2002 · Low confidence | Term ended | Term ended no later than Oct 12, 2002 | Low confidence |
| US 4,361,023 | Mandrel-restraining assembly for a tube-rolling mill Term ended Term ended no later than Nov 30, 2002 · Low confidence | Term ended | Term ended no later than Nov 30, 2002 | Low confidence |
| US 4,364,770 | Manufacture of a composite tubular product Term ended Term ended no later than Dec 21, 2002 · Low confidence | Term ended | Term ended no later than Dec 21, 2002 | Low confidence |
| US 4,373,703 | Device for rapidly cooling metal tubes Term ended Term ended no later than Feb 15, 2003 · Low confidence | Term ended | Term ended no later than Feb 15, 2003 | Low confidence |
| US 4,375,160 | Manufacture of seamless steel tube Term ended Term ended no later than Mar 1, 2003 · Low confidence | Term ended | Term ended no later than Mar 1, 2003 | Low confidence |
| US 4,380,480 | Method of making one-piece tubular axle blanks and the produced axle blanks Term ended Term ended no later than Apr 19, 2003 · Low confidence | Term ended | Term ended no later than Apr 19, 2003 | Low confidence |
| US 4,383,604 | Device for the transfer of long products particularly bars or tubes Term ended Term ended no later than May 17, 2003 · Low confidence | Term ended | Term ended no later than May 17, 2003 | Low confidence |
| US 4,395,897 | Rolling head support assembly for a rolling mill Term ended Term ended no later than Aug 2, 2003 · Low confidence | Term ended | Term ended no later than Aug 2, 2003 | Low confidence |