Anticalculus oral composition
CA 1339410 C · Owner: Colgate-Palmolive Company · Inventors: Polefka, Thomas G.; Gaffar, Abdul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oral composition such as a toothpaste (including gel or cream), mouthwash, lozenge, chewing gum or tooth powder containing in an orally acceptable vehicle approximately by, weight, one or a mixture of water soluble alkali metal or ammonium tripolyphosphate salts as anticalculus agent or agents and as, inhibitor against enzymatic hydrolysis of said agents in saliva an amount of a fluoride ion source sufficient to supply 25 ppm to 2,000 ppm of fluoride ions, said composition having a pH of about 4.5 to about 9.
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
- Granted September 2, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 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
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.