Expired Canadian patentCanada
Dentifrice compositions
CA 1302290 C · Owner: Ingram, Geoffrey Stewart · Inventors: Trevethan, Michael Albert; Bristow, Neil John; Ingram, Geoffrey Stewart
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure concerns a toothpaste having an aqueous humectant liquid phase, consisting at least in part of an aqueous solution of potassium acetate.
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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 9, 1988
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302290 C
Classification (IPC)A61K8/19 +1 more
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.