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. 26, 2009
Filed:
May. 09, 2006
Takeshi Ishikawa, Chiba-ken, JP;
Takeshi Ishikawa, Chiba-ken, JP;
Hitachi Tool Engineering, Ltd., Chiba-ken, JP;
Abstract
A hard-coated member comprising a hard coating comprising a lowermost layer, an intermediate laminate and an uppermost layer on a substrate, the intermediate laminate being constituted by alternately laminated layers A and layers B having different compositions, the layers A and the layers B being respectively made of at least one selected from the group consisting of nitrides, borides, carbides and oxides of metal components having compositions represented by the formula of AlCrTiSi, wherein W, X, Y and Z respectively represent atomic % of Al, Cr, Ti and Si, W+X+Y+Z=100, and these combinations, the layers A meeting the condition of 70≦W+X<100, the layers B meeting the condition of 30≦Y<100, and the uppermost layer being made of at least one selected from the group consisting of nitrides, carbides, sulfides and borides of Ti or Ti and Si and these combinations, or at least one selected from the group consisting of nitrides, carbides, sulfides and borides of Cr or Cr and Si and these combinations.