Optically active benzyl alcohol compound and the use thereof
CA 2026216 C · Owner: Koshinaka, Eiichi · Inventors: Kurata, Sakae; Kato, Hideo; Ito, Yasuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A levo-rotatory enantiomer of benzyl alcohol compound represented by the following formula (I): (see figure 1), wherein ~ C represents an asymmetric carbon atom; a pharmacologically acceptable salt of the compound; and a method for preparing the enantiomer is disclosed. Also disclosed are methods for ralaxing uterine smooth muscle and bladder smooth muscle comprising administering the levvo-rotatory enantiomer. Further disclosed is a pharmaceutical composition for the treatment of premature labor or incontinence of urine comprising an effective amount of the levo-rotatory enantiomer together with a pharmaceutically acceptable carrier or coating. Lastly disclosed are methods for the …
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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 September 26, 1990 and granted December 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2012.
- 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.