Liquid oral compositions comprising a calcium compound and an acidulant
CA 2247114 C · Owner: Smithkline Beecham Limited · Inventors: Parker, David Myatt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Acidic oral compositions having reduced tooth erosion characteristics especially acid beverages such as fruit juice drink concentrates or oral healthcare products such as mouthwashes are prepared by adding a , calcium compound to the acid composition so that the mol ratio of calcium to acid ranges from 0.3 to 0.8 and the pH of the composition, if , necessary after adjustment with an alkali is from 3.5 to 4.5.
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 February 12, 1997 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2019.
- 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.