Oral composition
CA 2098525 C · Owner: Sunstar Kabushiki Kaisha · Inventors: Tomita, Chiho; Mori, Shigeki
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 including an organosilicon-types quaternary ammonium salt immobilized on a water-insoluble solid carrier. In particular, an oral composition in an aqueous system according to the present invention includes an organosilicon-type quaternary ammonium salt immobilized on a water-insoluble solid carrier in combination with at least one surfactant selected from the group consisting of polyoxyethylenepolyoxypropylene block copolymers and alkylolamides as a stabilizing agent; at least one thickening agent selected from the group consisting of nonionic thickening agents and cationic thickening agents; and optionally at least one alcohol …
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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 June 16, 1993 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 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.