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:
Dec. 06, 1994
Filed:
Jun. 10, 1993
Applicant:
Inventors:
Ingo von Hagen, Krefeld, DE;
Ulrich Menne, Bochum, DE;
Ulrich Hoffmann, Duisburg, DE;
Bernhard Vogelsang, Langenfeld, DE;
Assignee:
Mannesmann Aktiengesellschaft, Dusseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C22C / ; C22C / ;
U.S. Cl.
CPC ...
148330 ; 148333 ; 148548 ; 138177 ; 49502 ; 296188 ; 2961466 ;
Abstract
An air hardening steel which is killed during casting used as material for manufacturing structural tubes for structural elements which are subjected to high mechanical loads, particularly for door reinforcements in the manufacture of automobiles. The steel is composed of in percent by weight: