Artificial tanning compositions having improved color development
CA 2186502 C · Owner: Tanner, Paul Robert · 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 compositions that provide improved color development and good chemical and physical stability. These compositions comprise dihydroxyacetone certain amino acids or their pharmaceutically acceptable salts and, a topical carrier, wherein said compositions have a pH value of less than about 4. In other embodiments these compositions comprise dihydroxyacetone, certain amino acids or their pharmaceutically acceptable salts and a stabilizing salt selected from the group consisting of metabisulfite salts, sulfite salts, hydrogen sulfite salts and mixtures thereof, and a topical carrier.
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 17, 1995 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 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.