Plaque-inhibiting composites
CA 2233408 A1 · Owner: Thera Patent Gmbh & Co. Kg Gesellschaft Fur Industrielle Schutzrechte · Inventors: Burger, Bernd; Gangnus, Bernd; Guggenberger, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to dental composites made of customary materials including: polymerizable monomers initiators, fillers and other auxiliaries; and additionally containing salts of acid-functional polymers wherein the salt comprises mono- or polyvalent cations. Preferably the salts of acid-functional polymers are cured glass ionomer cements. The dental compositions of this invention are plaque inhibiting.
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 March 26, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2020.
- 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.