Photoprotective compositions
CA 2244887 C · Owner: Tanner, Paul Robert · Inventors: Wagner, Julie Ann; Tanner, Paul Robert
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 leave on skin care compositions, comprising: , (a) from about 0.1 % to about 30 % of a sunscreen active (b) from about 0.5 % , to about 20 % of a hydrophobic structuring agent, (c) from about 0.2 % to about 10 % of a hydrophilic surfactant (d) from about 0.1 % to about 5 % of a thickening agent, and (e) water. These compositions are useful for providing protection to human skin 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 January 24, 1997 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2019.
- 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.