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:
Aug. 29, 2000
Filed:
Apr. 28, 1998
Applicant:
Inventor:
Richard J Zaranek, Pittsburgh, PA (US);
Assignee:
USX Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C23C / ; C22C / ;
U.S. Cl.
CPC ...
148225 ; 148226 ; 148230 ; 148540 ; 148541 ; 148546 ;
Abstract
A substantially carbon free (e.g. 50-80 ppm carbon max.) iron base melt is strip cast to provide a cast strip having a low strength, high ductility, essentially ferrite matrix substantially free of hardening acicular ferrite, bainite and martensite phases. The strip strength may be enhanced by subjecting the strip to a carburizing or nitriding treatment either directly after casting or after casting followed by cold rolling and annealing.