Antiperspirant gel stick composition
CA 2135386 C · Owner: Hofrichter, Brian D. · Inventors: Gardlik, John M.; Hofrichter, Brian D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses antiperspirant gel stick compositions made from a n-acyl amino acid amides a liquid base, material, and an antiperspirant active. The above combination provides gel stick antiperspirant compositions having excellent efficacy, stability, low residue, low skin irritation and aesthetic advantages over compositions disclosed in the art. These compositions are easily prepared by conventional techniques.
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 April 26, 1993 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2015.
- 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.