Use of phospholipid derivatives as antiviral pharmaceutical and new phospholipids
CA 2023944 C · Owner: Roche Diagnostics Gmbh · Inventors: Herrmann, Dieter; Zilch, Harald; Koch, Edith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is concerned with the use of compounds of the general formula:-, wherein X is a valency bond an oxygen or sulphur atom, a sulphinyl sulphanyl, aminocarbonyl, carbonylamino or ureido group or a C3-C8-cycloalkylene or phenylene radical, Y is an oxygen or sulphur atom R1 is a, hydrogen atom or a straight-chained or branched saturated or unsaturated alkyl radical containing up to 18 carbon atoms which is optionally substituted one or more times by phenyl, halogen, C1-C4-alkoxy C1-C4-, alkylmercapto, C1-C4-alkoxycarbonyl C1-C4-alkane-, sulphinyl or C1-C4-alkanesulphonyl R2 is a straight-, chained or branched saturated or unsaturated alkylene, chain containing up to 18 …
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 August 24, 1990 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 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.