Water-based amalgam adhesive
CA 2117348 A1 · Owner: Mitra, Sumita B. · Inventors: Aasen, Steven M.; Mitra, Sumita B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dental adhesive containing water acid-reactive filler, water-miscible acidic polymer an ethylenically-unsaturated moiety, water-soluble reducing agent water-soluble oxidizing agent and, optionally photoinitiator. The adhesive has two curing modes namely, an acid-filler ionic reaction and a redox-initiated crosslinking reaction, and optionally, a photoinitiated crosslinking curing mode. The adhesive can be applied in one coat or two coats and is particularly well suited for use under amalgam.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.