Pharmaceutical compositions containing urea
CA 1114744 A · Owner: Societe De Recherches Pharmaceutiques S.A. · Inventors: Leigh, Steven; Ayres, Peter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmaceutical compositions for application topically or by suppository comprise:a) a medicament, preferably protected from degradation by moisture by being presented in small particles of a waxy material, b) from 5% to 40% of an inclusion compound of urea with a straight-chain aliphatic compound prefer-, ably a fatty acid or alcohol, c) up to 50% of an inert insoluble powder such as starch, d) from 25% to 90% of an inert carrier components, a), b) and c) being dispersed in d). The compositions have good storage stability and a smooth texture.
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 December 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 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.