Method of modifying the properties of a substrate surface by covalent bonding of a compound to the surface, and membrane modified according to this method
CA 2085979 A1 · Owner: Engbers, Gerardus Henricus Maria · Inventors: Engbers, Gerardus Henricus Maria; Feijen, Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of modifying the properties of a surface of a substrate by covalent bonding of a compound to the surface the compound, comprising one or more functional groups which are all or partly activated by a reagent in a solvent-containing first solution whereafter the activated compound is bonded to a functional substrate surface in a solvent-containing second solution.
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 June 19, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 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.