Cosmetic compositions for artificial tanning
CA 2190396 C · Owner: L'Oreal · Inventors: Ascione, Jean-Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel cosmetic compositions for artificial skin tanning including a cosmetically acceptable carrier such as a water-in-silicone carrier containing dihydroxyacetone as the tanning agent are disclosed. The compositions further include a mono- or dihydric alcohol and a silicone emulsifier consisting of a polydimethylsiloxane having one of formulae (I) and (II) wherein 1 <= a <= 500 (where a is an integer) 1 <= b <= 100 (where b is an integer), and R is a radical -C¿n?H¿2n?-(-OC¿2?H¿4?)¿x?-(-OC¿3?H¿6?)¿y?-O-R' where R' is H or a straight or branched C¿1-12? alkyl radical and O <= x <= 50 (where x is an integer) O <= y <= 50 (where y is an integer), x + y >= 1 and 2 <= n <= 12 (where n is an …
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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 March 20, 1996 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2018.
- 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.