Cosmetic composition
CA 2072713 C · Owner: Gregory, Marion F. · Inventors: Morris, Christine; Gregory, Marion F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preserved sunscreen compositions comprising 0.1 to 20% by weight of a substituted 1,3-diketone, a preservative system comprising 0.1 to 5% by weight of an organic acid and a cosmetically acceptable carrier for the sunscreen the, composition having a pH value not exceeding pH 6.
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 29, 1992 and granted July 8, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2014.
- 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.