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. 15, 2006
Filed:
Jul. 03, 2002
Hoa T. Bui, Mendota Heights, MN (US);
Brant U. Kolb, Afton, MN (US);
Sumita B. Mitra, West St. Paul, MN (US);
Hoa T. Bui, Mendota Heights, MN (US);
Brant U. Kolb, Afton, MN (US);
Sumita B. Mitra, West St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
The present invention provides a dental paste, methods of making and using the dental paste, and compositions prepared therefrom. The dental paste includes (a) a filler including porous, non-pyrogenic silica having a silane treated surface and being substantially free of heavy metals and (b) a filler including non-agregated primary silica particles, with the fillers being dispersed in a hardenable resin. Fillers including porous, non-pyrogenic silica, and methods of making and using the fillers, are also provided.