Antiperspirant
CA 2069433 C · Owner: The Gillette Company · Inventors: Kwass, Jill A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optically clear liquid antiperspirant product in the form of a stable water-in-oil emulsion with a viscosity of less than about 1000 cps at about room temperature includes an aqueous phase with an antiperspirant active ingredient in solution therein an oil phase making up at least about thirty percent of the product and a stabilizing agent that has a substantial solubility in each of the oil and aqueous phases. The emulsion has long term stability over temperature ranges from about 0 to 45°C. The product preferably is dispensed as a thin film from a rollon type dispenser.
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 4, 1990 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2012.
- 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.