Oil-free pharmaceutical cream
CA 1045974 A · Owner: Glaxo Laboratories Limited · Inventors: Franks, Michael H.; Busse, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The Specification describes a pharmaceutical cream composition comprising a dispersion of a wax in an aqueous phase comprising water and a water-miscible hydroxylic solvent, the total quantity of wax being 5.0 to 30% the quantity of water being 7.0 to 75% and the total quantity of hydroxylic solvent being 10 to 80% these, amounts being based on the total weight of the composition. The cream compositions are substantially oil-free and this represents an important practical advantage over prior cream compositions containing oils. The cream compositions may contain a drug intended for topical application e.g. an anti-inflammatory steroid.
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 January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
- 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.