Use of xanthine derivatives for the treatment of muscle damage after interruption of the blood circulation
CA 2089959 A1 · Owner: Gregory, Michael Alfred · Inventors: Gregory, Michael Alfred; Mars, Maurice; Okyayuz-Baklouti, Ismahan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the disclosure The use of xanthine derivatives for the treatment of muscle damage after interruption of the blood circulation Xanthine derivatives of the formula I, (I) where at least one of the radicals R1 and R3 is a radical of the formula Ia, (Ia), R4 is a (C1-C3)-alkyl radical n is an integer of 2 - 5, and - if only one of the radicals R1 and R3 is such a tertiary hydroxyalkyl group of the formula Ia - the other radical is a hydrogen atom or an aliphatic hydrocarbon radical R5 which has up to 6 carbon atoms and whose carbon chain can be interrupted by up to 2 oxygen atoms or can be substituted by an oxo group or up to two hydroxyl groups, where there oxo and hydroxyl groups …
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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 February 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2015.
- 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.