Multi-unit pulsatile delivery system
CA 2031864 A1 · Owner: Cortese, Richard · Inventors: Maruyama, Frederick; Cortese, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an active agent dispenser for use in a fluid-containing environment which dispenser comprises, a rigid housing (20) a plurality of movable active agent units (26) (28)(30)(32) and (34), filling a portion of the housing a fluid-, activated driving member (38) for dispensing the active agent units filling the remainder of the housing, and an active agent unit outlet means (22). The dispenser may optionally also include an initial active agent tablet (24), a density element (36) and/or an inert, layer (40). In the present invention each active agent unit is, comprised of an active agent dosage or filling contained within a fluid-impermeable cup-shaped …
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 December 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 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.