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:
Nov. 10, 1998
Filed:
Jul. 22, 1997
Applicant:
Inventor:
Bjorn Ljungberg, Enskede, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
4272553 ; 4272552 ; 4272551 ;
Abstract
A body is disclosed with a coating comprising one or more refractory layers of which one layer is an outermost smooth, shiny 110-textured .alpha.-Al.sub.2 O.sub.3 layer. Said A1.sub.2 0.sub.3 layer has a surface appearance almost like a polished A1.sub.2 0.sub.3 layer. Coated tools show improved tool lives compared to prior art tools when used for machining steel or cast iron material preferably for near net shape machining.