Anticalculus oral composition
CA 2057697 C · Owner: Colgate-Palmolive Company · Inventors: Afflitto, John; Smith, Sahar F.; Gaffar, Abdul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anal composition such as a toothpaste (including gel or cream), mouthwash, lozenge, chewing gum or tooth powder containing a calculus-inhibiting amount of a linear molecularly dehydrated polyphosphate salt and, as inhibitor of enzymatic hydrolysis of said polyphosphate salt in saliva, a synthetic polymeric vinyl phosphate. A fluoride-ion providing source may also be present to further inhibit the enzymatic hydrolysis of skid polyphosphate salt.
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 December 16, 1991 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 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.