Solid drug for oral use
CA 2507002 C · Owner: Kissei Pharmaceutical Co. Ltd. · Inventors: Naganuma, Tsuyoshi; Muramatsu, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a solid oral dosage form pharmaceutical for the treatment of dysuria which comprises, as an active ingredient an indoline compound having an .alpha.1 -adrenoceptor blocking activity and represented by the formula: (see above formula), prodrug, pharmaceutically acceptable salt or pharmaceutically acceptable solvate thereof, wherein said pharmaceutical is prepared to have 85% dissolution time of not more than 60 minutes in a dissolution test according to method 2 (paddle method) of Japanese pharmacopoeia in a condition using water.
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 11, 2003 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 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.