Implant for transport and release for pharmacologically active agents incorporated within polyphosphazenes and related methods
CA 2491282 C · Owner: Celonova Biosciences Germany Gmbh · Inventors: Denk, Roman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an implant comprising (a) a polymer of the general formula (I) as a matrix material of the implant wherein n is , from 2 to , .infin. and R1 to R6 are the same or different and represent a halogenalkoxy alkoxy, alkylsulfonyl, dialkylamino or aryloxy group or a heterocycloalkyl or heteroaryl , group having nitrogen as a heteroatom and at least one halogen substituent; and , (b) at least one pharmacologically active agent incorporated into the matrix material, a process for producing the same and the use of a mixture of a polymer , having the formula (I) and a pharmacologically active agent for the preparation of , a pharmaceutical composition in the …
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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
- Filed July 4, 2003 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2025.
- 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
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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.