Clear, water-miscible, liquid pharmaceutical vehicles and compositions which gel at body temperature for drug delivery to mucous membranes
CA 1090252 A · Owner: Ciba-Geigy Ag · Inventors: Krezanoski, Joseph Z.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmaceutical vehicles for delivery of pharmacologically active chemical materials to mucous membranes as well as, pharmaceutically active compositions containing such vehicles are provided. The pharmaceutical vehicles are clear water, miscible, physiologically-acceptable liquid compositions which, gel to a thickened non-flowing and adhering consistency at human body temperature. They are liquid at ambient room temperature and have a gel transition temperature in the range of from about 25°C. to about 40°C. Aqueous solutions of certain polyoxyethylene-polyoxypropylene condensates are suitable vehicles. Also provided are pharmaceutical compositions containing added pharmacologically active …
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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 November 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 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
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.