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:
May. 31, 2005
Filed:
Jul. 03, 2002
Applicants:
Takemori Takayama, Hirakata, JP;
Chikara Nakao, Hirakata, JP;
Inventors:
Takemori Takayama, Hirakata, JP;
Chikara Nakao, Hirakata, JP;
Assignee:
Komatsu Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C038/08 ; C22C038/06 ;
U.S. Cl.
CPC ...
Abstract
A primary purpose is to provide an inexpensive high-toughness wear-resistant steel having satisfactory toughness where its hardness is HRC 55 or more. This steel contains at least 0.21 to 0.80 wt % C; 0.3 to 2.0 wt % Al; and 0.5 to 4.0 wt % Ni as essential components and further contains alloy elements such as Si, Mn, Cr, Mo, W, V, Ti, Cu and B; unavoidable impurities such as P, S, N and O; and the remainder which substantially consists of a tempered martensitic steel of Fe.