Pharmaceutical compositions for oral use and method of preparing them
CA 2083305 C · Owner: Takeda Chemical Industries, Ltd. · Inventors: Mizukami, Yoshio; Makino, Tadashi; Kikuta, Jun-Ichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pharmaceutical composition for oral use comprising an effective amount of a compound of the formula (I) having antagonistic action to angiotensin II, (see formula I), (wherein the ring W is an optionally substituted Ncontaining heterocyclic residue; R3 is a group capable of forming an anion or a group convertible thereinto; X is a direct bond or a spacer having an atomic length of two or less between the phenylene group and the phenyl group; and n is an integer of 1 or 2) and an oleaginous substance having a lower melting point and, a method for preparing a pharmaceutical composition for oral use comprising an effective amount of a compound of the formula (I) and an oleaginous substance …
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 November 19, 1992 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2014.
- 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.