Analgesics for nasal administration
CA 2479718 A1 · Owner: Castile, Jonathan David · Inventors: Hayes, Ann Gail; Watts, Peter James; Birch, Phillip John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An analgesic and a delivery agent are combined in a pharmaceutical composition such that, on introduction into the nasal cavity of a patient to be treated the analgesic may be delivered to the bloodstream to produce within 30 minutes a therapeutic plasma concentration, Cther of 0.2 ng/ml or greater which is , maintained for a duration Tmaint of at least 2 hours. The analgesic may be an opioid analgesic or a non-steroidal anti-inflammatory drug.
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 19, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 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
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.