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:
Jun. 18, 2002
Filed:
Jun. 17, 1999
Applicant:
Inventors:
Stefano Fortunati, Ardea, IT;
Stefano Cicale′, Rome, IT;
Giuseppe Abbruzzese, Montecastrilli, IT;
Susanna Matera, Rome, IT;
Assignee:
Acciai Speciali Terni S.p.A., Terni, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/04 ; C21D 8/12 ;
U.S. Cl.
CPC ...
H01F 1/04 ; C21D 8/12 ;
Abstract
During the treatment of electrical steel, a careful combination of heat treatment of the slab with a specific primary recrystallization and nitriding treatment allows for control of the distribution, quantity and dimensions of precipitates in order to obtain a homogeneous precipitation of nitrogen compounds by direct reaction of the absorbed nitrogen with aluminum during the nitriding step.