Process for the synthesis of finely divided antiperspirant active ingredient suspensions
CA 2309574 C · Owner: Schanz, Klaus · Inventors: Breker, Johannes; Reibel, Wolfgang; Schanz, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of this invention is a method for the manufacture of suspensions of fine, particle size containing basic aluminum halide which are particularly effective in, reducing perspiration of the human skin and are also easy to handle. The nonaqueous, oily suspensions can be used as antiperspirants in cosmetic formulations.
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 May 26, 2000 and granted September 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2022.
- 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.