Paba, fatty alcohol and non ionic surfactant in sun protective compositions
CA 1092031 A · Owner: Scherico Ltd. · Inventors: Sayre, Robert M.; Kaplan, Carl; Marlowe, Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel topical sun-protective formulations are provided which retain good protective index levels even after moisture, exposure. These cosmetically elegant formulations are based on aqueous compositions comprising by weight 2 to 10% paminobenzoic acid (PABA) and 2 to 6% of a cosmetically acceptable C12 - C18 fatty alcohol which is solid at 20°C and 0.5 to 2% of a cosmetically acceptable nonionic surfactant of the polyoxyethylene type having an HLB value of between about 9 and 18. The weight ratio of the alcohol to the surfactant is in the range of 2-6 to 1. The compositions also contain about 45 to 60% ethanol with the balance of the vehicle being substantially water. The compositions may …
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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 December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- 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
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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.