Composition for the cleaning of teeth and the prophylaxis of caries
CA 2081408 C · Owner: Khartchenko, Alina S. · Inventors: Khartchenko, Nadejda P.; Khartchenko, Serguei V.; Khartchenko, Alina S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The composition presents itself in the form of rapidly dissolving water soluble tablets, which, contain multivitamins sodium percarbonate, sodium bicarbonate citric acid, various food flavors, and food dyes. These components are mixed in such percentage and weight proportions, that, when placed in contact with human saliva a pH of 5.4 - 5.6 is created within , the oral cavity. A concurrent excretion of carbon dioxide CO2 and oxygen 0 occurs. Both of these reactions, enhance the desired effect of cleaning both soft and hard tartar from the teeth, while at the same, time diminishing not only the amount of pathogenic microflora but also the , inflammatory, processes in the gum and mucus …
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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 October 26, 1992 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2014.
- 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
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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.