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. 24, 2000
Filed:
Dec. 07, 1998
GC Corporation, Tokyo, JP;
Abstract
A glass powder for dental glass ionomer cement is disclosed, comprising a fluoroaluminosilicate glass powder for dental glass ionomer cement having a specific gravity of 2.4.about.4.0, a mean particle size of 0.02.about.4 .mu.m, and a BET specific surface area of 2.5.about.6.0 m.sup.2 /g. Further, it preferably has a maximum particle size of less than 4 .mu.m and contains 10.about.21% by weight of Al.sup.3+, 9.about.21% by weight of Si.sup.4+, 1.about.20% by weight of F.sup.-, and 10.about.34% by weight in total of Sr.sup.2+ and/or Ca.sup.2+ in its components. The glass powder for dental glass ionomer cement of the invention can impart superior surface smoothness and film thickness, while utilizing superior characteristics inherent to the conventional dental glass ionomer cement, such as superior biocompatibility and adhesive strength.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile