Hydrophilic polymer coated perfluorocarbon polymer-based matrices, their preparation and use in bioaffinity
CA 2121747 C · Owner: Lowe, Christopher Robin · Inventors: Parris, Norman A.; Pitfield, Ian; Purvis, Duncan Ross
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to perfluorocarbon polymer-based matrices having a coating of a crosslinked hydrophilic polymer such as polyvinyl alcohol. Solid affinity supports prepared using such hydrophilic polymer coated perfluorocarbon polymer-based supports and their use in affinity separations are also provided. The affinity support is based on crosslinked hydrophilic polymer coated perfluorocarbon carrier having ligands or binders for the ligands attached to its surface.
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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 April 20, 1994 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2016.
- 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.