Pre-column for preconcentrating substances to be chromatographed
CA 1205751 A · Owner: Duphar International Research B.V. · Inventors: Van Amsterdam, Peter H.; Wiegers, Elbert; De Bree, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a pre-column of pressure-resistant material for preconcentrating at elevated pressure substances to be chromatographed which column consists of a vessel-shaped body which narrows internally towards the two ends and has means for sealing connections upstream to an inlet tube, for the liquid to be preconcentrated and downstream to a separating column. The invention also relates to a device for a liquid chromatography system comprising one or more pre-colomns, optionally one or more separating columns and a coupling member, and to a coupling member for said device.
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
- Granted June 10, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 2003.
- 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.