Blood-compatible and bacteria-repellent copolymer
CA 2241374 A1 · Owner: Anders, Christine · Inventors: Anders, Christine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a copolymer having units of (a) at least one monomer containing a sulfonic acid or sulfonate group, (b) at least one monomer containing a carboxyl or carboxylate group and (c) at least one monomer containing an NCO-reactive group. The copolymer may have up to 70 mol% based on the total of monomers (a), (b) and (c) of units of one or more other monomers having either a different functionality to that of the monomers mentioned or no functionality. The copolymer can be covalently bonded to a hydrophilic surface of a polymer substrate by reaction with a polyisocyanate. Also disclosed is an article having a surface modified in this way useful for medical hygiene, industrial, …
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 22, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 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.