Oral composition
CA 2087789 C · Owner: Mori, Shigeki · Inventors: Makino, Chiho; Mori, Shigeki; Takatsuka, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an oral composition comprising a water-insoluble polymer having quaternary nitrogen atoms as an active component and a polyoxyethylenepolyoxypropylene block copolymer surfactant as a stabilizing agent for the polymer. This composition has high adsorbability to microorganisms in the oral cavity and removes the microorganisms to exhibit improved dental plaque control effects.
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 January 21, 1993 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2015.
- 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.