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:
Feb. 27, 2007
Filed:
Oct. 24, 2001
Applicants:
Reinhold Schneider, Leoben, AT;
Gerhard Lichtenegger, Kapfenberg, AT;
Günter Schirninger, Kindberg-Aumühl, AT;
Inventors:
Reinhold Schneider, Leoben, AT;
Gerhard Lichtenegger, Kapfenberg, AT;
Günter Schirninger, Kindberg-Aumühl, AT;
Assignee:
Boehler Edelstahl GmbH & Co. KG, Kapfenberg, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 53/10 (2006.01); B21C 37/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Process for manufacturing cylindrical hollow bodies with a circular cross-section using solid rough material of corrosion-resistant, martensitic chromium steels. A remelting block is produced and a tube blank is made therefrom, the tube blank being formed into a tube at hot forming temperature by extrusion at a deformation ratio of at least 6. Hollow bodies are cut from the resultant tube.