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:
Jan. 10, 2001
Jiin-Huey Chern Lin, Winnetka, IL (US);
Chien-Ping Ju, Carbondale, IL (US);
Chao-Chin Ning, Kaohsiung, TW;
Hsuan-I Huang, Kaohsiung, TW;
Other;
Abstract
The present invention provides an amalgamatable dental alloy powder for making an amalgam having a low initial mercury vapor release rate having a composition comprising 50-80 wt % Ag; 10-30 wt % Cu, and 10-35 wt % Sn, and optionally less than 7 wt % of Pd, which is prepared by subjecting a single-alloy powder having a particle size ranging from 1 to 55 microns with a majority thereof having a particle size less than 20 microns to a heat treatment, or separately subjecting a Ag—Cu—Sn powder having a particle size ranging from 1 to 70 microns with a majority thereof having a particle size less than 30 microns and a Ag—Cu—Pd powder having a particle size ranging from 1 to 100 microns with a majority thereof having a particle size less than 45 microns to heat treatments, and subjecting the heat treated powders to a pickling treatment.