Retinol acetate skin-care compositions
CA 1108052 A · Owner: Beecham Group Limited · Inventors: Harrison, Raymond G.; Bowley, Inez
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A skin-care composition, effective in promoting epidermal mitosis, comprising from 20-40% by weight of oil a non-ionic emulsifying agent in an amount greater than 1 % by weight and retinol acetate in an amount from 1,000 to 15,000 IUg-1. The composition preferably contains butylated hydroxytoluene or butylated hydroxyanisole as an antioxidant.
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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
- 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.