A new phenylacetic derivative and process for their obtention
CA 2017746 C · Owner: Laboratorios Vinas, S.A. · Inventors: Buxade, Antonio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pharmaceutical phenylacetic acid derivative of the following formula (I):, (see formula I) The invention also relates to a process for preparing the derivative of formula (I) which includes reacting 2-(2,6-dichloroaniline)-phenylacetic acid with zinc oxide zinc, hydroxides, zinc carbonates or zinc salts or reacting an ammonium salt, an alkali metal salt or an alkaline earth metal salt of 2-(2,6-dichloroaniline)-phenylacetic acid with a zinc salt, e.g. zinc chloride, in a nonpolar solvent. The compound of formula (I) is novel and has improved pharmaceutical properties in anti-inflammatory preparations.
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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 May 29, 1990 and granted May 8, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 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.