Toothpaste compositions containing fluidized polymer suspensions of carboxymethyl cellulose
CA 2257407 A1 · Owner: Clarke, Mary T. · Inventors: Melbouci, Mohand; Clarke, Mary T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are toothpaste compositions and a process for preparing such compositions comprising dental abrasive humectant, fluidized polymer , suspension and a suitable vehicle for the humectant wherein the fluidized , polymer suspension comprises: polyethylene glycol carboxymethyl cellulose and , hydrated thickening silica.
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 May 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 2019.
- 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.