The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2005
Filed:
Mar. 27, 2001
François Stouvenot, Labry, FR;
Marc Burty, Metz, FR;
Jean-françois Domgin, Sommerviller, FR;
Pascal Gardin, Metz, FR;
Dominique Viale, Metz, FR;
Raymond Reitz, Terville, FR;
Frédéric Leclercq, Metz, FR;
François Stouvenot, Labry, FR;
Marc Burty, Metz, FR;
Jean-François Domgin, Sommerviller, FR;
Pascal Gardin, Metz, FR;
Dominique Viale, Metz, FR;
Raymond Reitz, Terville, FR;
Frédéric Leclercq, Metz, FR;
Usinor, Puteaux, FR;
Abstract
A vacuum treatment of cast metal in liquid form employing the steps of: introducing the cast metal in liquid form into a metallurgic ladle; filling the ladle until a guard height ranging between 0.4 and 0.6 m is reached; and treating the metal while bringing the atmosphere above the ladle under vacuum, and simultaneously stirring the cast metal by injecting helium into the base of the ladle during part of or the whole treatment.