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:
Jul. 24, 2001
Filed:
May. 26, 2000
Applicant:
Inventors:
Nobuaki Akagi, Seymour, IN (US);
Shinya Kawai, Seymour, IN (US);
Michael E. Lutheran, Seymour, IN (US);
Masaaki Satoh, Takasago, JP;
Hironori Suzuki, Takasago, JP;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/00 ;
U.S. Cl.
CPC ...
B22F 3/00 ;
Abstract
A powder metallurgy product which is made from constituent including iron powder. The iron powder includes iron grains which contain machinability improving element in the iron grains. The machinability improving element is configured to improve machinability of the powder metallurgy product and has a pinning effect. An amount (Q) of the machinability improving element is adjusted such that an absolute value of a differential coefficient (dS/dQ) is at least a predetermined value, where (S) is a grain size of iron in the powder metallurgy product.