Sulfonanilide derivatives and medicine
CA 2075482 C · Owner: Morita, Iwao · Inventors: Tada, Shin-Ichi; Morino, Akira; Morita, Iwao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An object of the present invention is to offer an agent for curing urinary incontinence with high selectivity to urethra, One of the compounds of the present invention is a sulfonanilide derivative having the following formula (T). (see fig. I) , The compounds of the present invention exhibit selective contracting action to smooth muscle of urethra tract whereupon they have useful effect as remedies fox urinary incontinence.
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 February 6, 1991 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 2013.
- 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.