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. 28, 1982
Filed:
May. 07, 1980
Applicant:
Inventors:
Johannes Jachowski, Duisburg, DE;
Rudolf Mohs, Essen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ; B22F / ;
U.S. Cl.
CPC ...
148 31 ; 164 591 ; 164 97 ; 75240 ; 419 47 ;
Abstract
A compound substance of great hardness and toughness, comprising a metal matrix, having embedded therein, hard material granules of a size of 0.1 to 5 mm. The metal matrix comprises 1 to 4% carbon, 0.3 to 0.6% silicon, 0.5 to 1.5% manganese, 0.8 to 2.8% vanadium, 0.5 to 1.5% chromium, 2 to 10% tungsten, about 0.01% aluminum and the remainder, iron.