Artificial tanning compositions having improved stability
CA 2186500 C · Owner: Robinson, Larry Richard · Inventors: Tanner, Paul Robert; Robinson, Larry Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to artificial tanning composition having improved stability. These compositions comprise dihydroxyacetone, a salt selected from the group consisting of metabisulfite salts sulfite salts, hydrogen sulfite salts, and mixtures thereof. These compositions are useful for imparting an artificial tan to human skin. In further embodiments these compositions also comprise a, sunscreen agent and are also useful for providing protection from the harmful effects of ultraviolet radiation.
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 March 3, 1995 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2017.
- 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.