Bioactive surface coating
CA 2226133 A1 · Owner: Lorenz, Gunter · Inventors: Anders, Christine; Lorenz, Gunter; Hocker, Hartwig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for making a surface of a substrate biocompatible, which comprises subjecting at least one monomer of the general formula: R-(A)a (in which R is a mono- or diolefinically unsaturated organic radical, having the valency a, A is a carboxyl group -COOH, a sulfuric acid group -OSO2OH, a sulfonic acid group -SO3H, a phosphoric acid group -OPO(OH)2 a phosphonic acid, group -PO(OH)2, a phosphorous acid group -OP(OH)2 a phenolic, hydroxyl group or a salt or an ester thereof and a is an integer from 1 to 6) to graft-polymerization under radiative induction onto an activated surface of the substrate with the, proviso that when A is a carboxyl group -COOH or a salt or an ester …
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 January 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 2, 2020.
- 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.