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. 03, 1991
Filed:
Oct. 11, 1990
Applicant:
Inventor:
Yoshio Kijima, Tokyo, JP;
Assignee:
Sumitomo Metal Mining Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
419-9 ; 419 10 ; 419 19 ; 419 23 ; 419 26 ; 419 27 ; 419 28 ; 419 36 ; 419 37 ; 419 38 ;
Abstract
An injection molded powder metallurgy product of highly satisfactory quality is obtained by a method which comprises injection molding mixture obtained by kneading a metal powder with a binder, depriving the molded mass of the binder while keeping the molded mass at least in contact with ceramic powder, projecting beads on the molded mass free from the binder, and thereafter sintering the molded mass studded with the beads.