Matrix material comprising several bio-active materials
CA 2221010 A1 · Owner: Bos, Johannes Jacobus Gerardus · Inventors: Bos, Johannes Jacobus Gerardus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A matrix material provided with a number of bio-active materials, in particular drugs comprises a, substrate, polyethyleneimine coupled to the substrate and several bio-active materials adhering to the polyethyleneimine and/or substrate.
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 November 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2019.
- 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.