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:
Oct. 04, 1994
Filed:
Apr. 23, 1993
Applicant:
Inventors:
Massimo Barteri, Rome, IT;
Ivan Nembrini, Montello, IT;
Assignees:
Centro Sviluppo Materiali S.p.A., Rome, IT;
Dalmine S.p.A., Dalmine, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ; C21D / ; C21D / ;
U.S. Cl.
CPC ...
420 49 ; 420 45 ; 420 58 ; 138177 ; 148592 ; 148597 ; 148325 ; 148327 ;
Abstract
A properly balanced chemical composition and the choice of a heat treatment (annealing and quenching) under controlled conditions allow to obtain uperduplex stainless steel manufactures which, in the hot-worked form, are excellent in resistance to corrosion and have unit tensile yield strength at room temperature of 90 ksi min.