High performance anion-exchange chromatographic packing composition
CA 1287442 C · Owner: Stevens, Timothy S. · Inventors: Stevens, Timothy S.; Langhorst, Martin A.; Randall, Osro W. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A anion-exchange chromatographic packing composition which comprises;, a substrate which comprises insoluble synthetic resinous particles of a low porosity gel type having cation-exchanging sites at least on their available surfaces, the particles having a diameter of from 1 to 75 microns; and, a liquid coating which comprises a hydrophilic water soluble, film forming aminated resin having anionexchanging sites which attract available cationexchanging sites of the substrate, wherein the liquid coating is retained by electrostatic bonds on the available surfaces of the substrate particles. The invention further includes a chromatographic column and process using the described packing …
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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
- Granted August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 2008.
- 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.