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. 23, 2001
Filed:
Oct. 07, 1998
Kathyrn R. Bretscher, Minneapolis, MN (US);
Richard P. Rusin, Woodbury, MN (US);
Bradley D. Craig, Inver Grove Heights, MN (US);
Sumita B. Mitra, West St. Paul, MN (US);
Joel D. Oxman, St. Louis Park, MN (US);
Janis R. Gust, Minneapolis, MN (US);
Cheryl A. Hayne, Minneapolis, MN (US);
James W. Westberg, Willernie, MN (US);
Matthew C. Trom, Cottage Grove, MN (US);
Brant U. Kolb, Afton, MN (US);
Dwight W. Jacobs, Hudson, WI (US);
David A. Kaisaki, St. Paul, MN (US);
James A. Baker, Hudson, WI (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Polymerizable compositions that include: (a) a cationically active functional group; (b) an initiation system capable of initiating cationic polymerization of the cationically active functional group; and (c) a filler composition that includes various radiopacifying fillers in an amount sufficient to render the polymerizable composition radiopaque. Components (a), (b), and (c) are selected such that the polymerizable composition polymerizes to form a polymerized composition having a Barcol hardness, measured using a GYZJ-935 meter, of at least 10 within 30 minutes following initiation of the cationically active functional group at a reaction temperature of 25° C.