Antiperspirant compositions containing calcium salts
CA 2337216 C · Owner: Thong, Stephen Hong-Kwee · Inventors: Weber, Teresa M.; Prodouz, Kristina N.; Thong, Stephen Hong-Kwee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention embraces antiperspirant compositions with improved efficacy. These compositions contain an aluminum or aluminum-zirconium antiperspirant salt and a water soluble calcium salt both of which are , suspended in a dermatologically acceptacle anhydrous carrier vehicle. The present invention also embraces a method of inhibiting or reducing perspiration by topically applying an effective amount of such an antiperspirant composition to the skin.
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 August 5, 1999 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2021.
- 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.