Canadian application, no grantCanada
Dosage form for providing ascending dose of drug
CA 2263558 A1 · Owner: Alza Corporation · Inventors: Wright, Jeri D.; Hamel, Lawrence G.; Ayer, Atul D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bilayer and trilayer tablet and a dosage form are disclosed for administering a controlled and increasing dose of drug over time. A method is disclosed also for administering an increasing dose of drug over time.
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 August 8, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 8, 1997
GrantedNo grant recorded
Term endedAugust 8, 2017
Patent numberCA 2263558 A1
Classification (IPC)A61K9/28 +1 more
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.