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:
Oct. 01, 2002
Filed:
May. 08, 2000
Applicant:
Inventors:
Assignee:
Toto Ltd., Kitakyushu, JP;
Primary Examiner:
Int. Cl.
CPC ...
C22C 9/04 ; C22F 1/08 ; B21J 5/00 ;
U.S. Cl.
CPC ...
C22C 9/04 ; C22F 1/08 ; B21J 5/00 ;
Abstract
A brass for forging which has an apparent Zn content of 37 to 50 wt % and contains 0.5 to 7 wt % Sn. The brass has a microstructure of at least an &agr; phase and a &ggr; phase at a temperature of 300 to 550° C. and has crystal grain sizes which are made fine. A process for preparing brass involving making the crystal grain size of brass material fine and plastic working the brass material at 300 to 550° C.