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:
Dec. 06, 1988
Filed:
Jan. 29, 1987
Applicant:
Inventors:
Kilian Friederich, Plochingen, DE;
Ulf Dworak, Baltmannsweiler, DE;
Assignee:
Feldmuehle Aktiengesellschaft, Duesseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501 87 ; 501 96 ; 501 98 ; 51307 ; 51309 ;
Abstract
Disclosed is a cutting tool insert of sintered ceramic intended for machining ferrous materials. The insert contains 7 to 29% by volume of a hard substance, 1 to 15% by volume of a metal oxide compound, and at least 70% by volume of aluminum oxide, and a maximum of 0.3% by volume of impurities.