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:
Sep. 12, 2000
Filed:
Mar. 05, 1999
Applicant:
Inventors:
Takashi Shibata, Hokkaido, JP;
Eiji Maeda, Hokkaido, JP;
Assignee:
The Japan Steel Works, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ; C22C / ; C22C / ;
U.S. Cl.
CPC ...
420 37 ; 420 38 ; 420 69 ; 420105 ; 420107 ;
Abstract
Alloy steel containing 0.10 to 0.50 wt % of C, 0.5 wt % or less of Si, 1.5 wt % or less of Mn, 1.5 wt % or less of Ni, 3.0 to 13.0 wt % of Cr, 0 to 3.0 wt % of Mo, 1.0 to 8.0 wt % of W, 0.01 to 1.0 wt % of V, 0.01 to 1.0 wt % of Nb, 1.0 to 10.0 wt % of Co, 0.003 to 0.04 wt % of B, and 0.005 to 0.05 wt % of N, the balance comprising Fe and unavoidable impurities.