Sunscreen compositions
CA 1267095 C · Owner: Brock, Earl D. · Inventors: Brock, Earl D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sunscreen compositions are disclosed which are resistant to rub-off and the concomitant loss of protection provided by the sunscreen. The sunscreen compositions comprise: A) from about 1% to about 20% of an oil soluble sunscreen;, B) from about 0.25% to about 3% of an ethylene acrylic acid copolymer having the formula, C) from about 2% to about 10% of an emulsifier; and D) from about 70% to about 96% of water; wherein the ratio of A:B is from about 12:1 to about 15:1 and the ratio of x:y is from about 1:9 to about 1:24 and the molecular weight of B is from about 3500 to about 4500.
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
- Granted March 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 27, 2007.
- 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.