Delivery of microparticle formulations using needleless syringe device for sustained-release of bioactive compounds
CA 2364198 A1 · Owner: Prestrelski, Stephen Joseph · Inventors: Saul, Gordon M.; Brodbeck, Kevin John; Prestrelski, Stephen Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for administration to a subject by means of a needleless syringe comprises particles which have a mean mass aerodynamic diameter of from 1 to 250 microns and an envelope density of from 0.1 to 25 g/cm3 the particles , comprising a biologically active agent and a sustained-release material which controls the release of the active agent to the subject following administration.
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 March 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2022.
- 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.