Composition for a clear cosmetic stick
CA 2483907 C · Owner: Schamper, Thomas · Inventors: Schamper, Thomas; Moghe, Bhalchandra Dattatray
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention includes a clear cosmetic stick that has a clarity that is stable over a temperature of 5 to 45 degrees Centigrade for a time period of at least about twelve months. The clear cosmetic stick includes one or more of a branched chain fatty acid surfactant and a straight-chain fatty alcohol surfactant.
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 1, 2003 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 1, 2025.
- 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.