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:
Sep. 20, 1988
Filed:
Feb. 04, 1987
Santrade Limited, Luzern, CH;
Abstract
The present invention relates to a unique and advantageous method making possible a superior technical and economical separation of cemented carbide bodies based upon their compositions and structures. The critical point of the method is, that after formation of a melt by melting of the binder metal including dissolved elements from the hard constituents there are so strong driving forces dependent on the grain size variables, proportions and compositions of the hard constituent phases, that melt is re-distributed between cemented carbide bodies in communicating contact. The re-distribution is determined by differences of mean grain sizes, grain size distributions, relative proportions and compositions of the hard constituent phases of the bodies.