Alkoxyphenylalkylamine derivatives
CA 2117250 C · Owner: Nakazato, Atsuro · Inventors: Ohta, Koumei; Sekiguchi, Yoshinori; Nakazato, Atsuro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An alkoxyphenylalkylamine derivative represented by the following formula:, (see. fig I), (wherein X1 and X2 may be either the same or different from each other and each represents a hydrogen atom a halogen, atom, a hydroxyl group, an alkoxy group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms and substituted with a phenyl group; R1 and R2 may be either the same or different from each other and each represents a hydrogen atom, an alkyl group having 1 to 7 carbon atoms an, alkyl group having 1 to 7 carbon atoms and substituted with "a hydroxyl group, a carboxyl group or an alkoxycarbonyl group" at the end, or, R1 and R2 together with the adjacent nitrogen atom …
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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 30, 1992 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 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.