Polyester-based composition for the controlled release of medicinal substances
CA 1332808 C · Owner: Speiser, Peter · Inventors: Heimgartner, Frederic; Schleuniger, Urs; Speiser, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The pharmaceutical composition is intended in particular for the sustained and controlled release of an effective dose of a medicinal substance. It comprises, as a carrier for the medicinal substance a, biodegradable polymer or copolymer or a mixture of biodegradable polymers and/or copolymers derived from a dicarboxylic acid selected from the acids of the Krebs cycle, and from an aliphatic diol containing 4 carbon atoms or from cyclohexane-1,4-dimethanol.
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 November 1, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 1, 2011.
- 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.