Wet appliable sunscreen and makeup and method for testing sunscreens for efficacy
CA 2292669 A1 · Owner: Stewart, Ernest Glading · Inventors: Stewart, Ernest Glading; Klein, Kenneth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The sunscreen or makeup may be applied to a person who is wet or even , underwater, yet it will provide the full efficacy which it would have had had it been applied to the person when his skin was dry. In addition it will be , effective from the time that it is first applied so no waiting period is , required, as was the case for the so-called "water resistant" and "waterproof" sunscreens of the prior art. A series of test procedures which illustrate the efficacy of the "wet-appliable" sunscreens of the present invention are disclosed.
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 June 4, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2020.
- 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.