Oral composition
CA 2060895 C · Owner: Sunstar Kabushiki Kaisha · Inventors: Fujita, Tomomi; Ohtsuki, Hidehiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oral composition comprising cetylpyridinium chloride and an N.alpha.-longer acyl basic amino acid lower alkyl ester or a salt thereof promotes the adsorption of cetylpyridinium chloride as a bactericide to the surfaces of teeth and hence, shows excellent prevention of the formation of dental plaque and dental caries.
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 23, 1991 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2013.
- 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.