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:
Aug. 04, 1992
Filed:
Oct. 04, 1990
Applicant:
Inventors:
Masakazu Achikita, Kashiwa, JP;
Akihito Ohtsuka, Sakura, JP;
Assignee:
Sumitomo Metal Mining Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524183 ; 524441 ; 524487 ;
Abstract
A powder metallurgy product delicate in shape is obtained with high efficiency in binder expulsion by using an injection molding composition including a sintering alumina powder and a binder, the binder including therein, in gravimetric ratio, 10 to 80% of a low-density polyethylene, 10 to 80% of a paraffin type wax and 5 to 35% of a boric ester, and the volumetric mixing ratio of the sintering powder to the binder is 30 to 70% of the former component to 70 to 30% of the latter component.