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. 20, 1990
Filed:
May. 12, 1989
Applicant:
Inventor:
John J DuPlessis, Elizabethtown, KY (US);
Assignee:
Crucible Materials Corporation, Pittsburgh, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
419 14 ; 419 28 ; 419 32 ; 419 49 ; 419 11 ; 419 31 ;
Abstract
Producing a die for use in compacting permanent magnet alloy powder by placing a quantity of a magnetic or nonmagnetic alloy, which may be stainless steel, cobalt- or nickel-base, or a magnetic or nonmagnetic mixture of one of these alloys and carbide particles in a container, heating the particles to an elevated temperature and hot-isostatically compacting the particles at the elevated temperature to obtain a fully dense die blank and forming a die cavity in the die blank. Carbide particles may be mixed with the alloy particles. The die blank may have an exterior cladding of stainless steel.