Dental plaque inhibitor
CA 2004903 A1 · Owner: Morisaki, Mayumi · Inventors: Morisaki, Mayumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dental Plaque Inhibitor ABSTRACT OF THE DISCLOSURE, Provided are dental plaque inhibitor compositions comprising a compound of the formula:, wherein R1 R2 and R3 are the same or different and each is a hydrogen atom or a methyl group or a pharmaceutically acceptable salt thereof. The compositions inhibit the formation of dental plaque by inhibiting the transformation of sucrose into insoluble polysaccharides.
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 7, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2011.
- 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.