Oligomers, their uses and formulations
CA 2046491 A1 · Owner: Merrell Pharmaceuticals Inc. · Inventors: Mullins, Michael J.; Jackson, Richard L.; Cardin, Alan D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The preferred oligomers of the present invention are polyureas, polycarbonates polyesters or, polyamides having a number average molecular weight of <10,000. These oligomers are water-soluble have a, rigid backbone, have recurring units coupled by carbonyl linking moieties which have anionic groups display, predominantly linear geomentry such that regular spacing between anionic groups exists in an aqueous medium and, are pharmaceutically-acceptable. The oligomers are useful for the treatment and/or diagnosis of AIDS and ARC. 38,587A-F
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 July 8, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2013.
- 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.