Zinc salt and hard abrasive as dentifrice
CA 1086228 A · Owner: Colgate-Palmolive Company · Inventors: Cordon, Martin; Norfleet, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dentifrice possessing enhanced polishing characteristics containing as the essential ingredients at least one hard abrasive in amount to provide a radioactive enamel abrasion to the dentifrice of above about 400, such as calcined alumina zirconium silicate, and the, like, and a non-toxic compound in an amount to provide at least about .0065% by weight of zinc to the dentifrice.
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 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 1997.
- 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.