Anti-plaque toothpaste
CA 2065313 A1 · Owner: Henkel Kommanditgesellschaft Auf Aktien · Inventors: Wuelknitz, Peter; Lehmann, Rudolf; Klueppel, Hans-Juergen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Toothpastes containing 10-60 wt. % of polishing agents 2-20 wt. , % of humectants, 0.5-5 wt. % of water-soluble consistency regulators and 0.05-0.5 wt. % of antimicrobial biguanides as well as 1-5 wt. % of other additives from the group of surface-active substances which contain aromatic oils and sweeteners have a, particularly high biguanide availability if the polishing agent consists main of calcium carbonate, the consistency regulators are non-ionic polysaccharide derivatives and the surface-active substances are a cationic tenside with a linear alkyl group containing 12-18 carbon atoms and one or two tertiary amino groups or quaternary ammonium groups and possibly a non-ionogenic …
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 August 16, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2012.
- 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.