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:
Apr. 30, 1991
Filed:
Dec. 15, 1988
Applicant:
Inventors:
Manabu Ohori, Chiba, JP;
Noriaki Koshizuka, Chiba, JP;
Yoshihiro Kataoka, Chiba, JP;
Shuzo Ueda, Chiba, JP;
Assignee:
Kawaski Steel Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
420109 ; 420 40 ; 420 63 ; 420 69 ; 420111 ;
Abstract
A steel suitable for a hot working press tool used for a slab width sizing press comprises particular amounts of C, Si, Cr, Mn, Mo, V and N having a specific Cr equivalent, or particular amounts of C, Si, Mn, Mo, V, Cr and Ni having a specified Cr/Ni ratio.