Pharmaceutical active derivative delivery systems
CA 2020964 A1 · Owner: Partain, Emmett M. Iii · Inventors: Brode, George L. Ii; Partain, Emmett M. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A biocompatible, film-forming delivery system for the delivery of pharmaceutical or therapeutic actives to a desired topical site of a subject, the system including:, an active derivatized compound wherein the active, derivatized compound is a reaction product of (1) a cyclic anhydride moiety-containing biocompatible, film-forming polymer with (2) at least one active selected from the group consitting of pharmaceutical actives, therapeutic actives and a combination thereof, wherein the at least one active has a moiety selected from the group consisting of (a) a hydroxyl moiety capable Or forming a half-ester reaction product with a cyclic anhydride moiety o the polymer, (b) an amine moiety …
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
- Filed July 11, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2012.
- 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.