Liquid column chromatographic separation
CA 1093340 A · Owner: Phillips Petroleum Company · Inventors: Snell, James B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus for sequentially subjecting a plurality of liquid samples to chromatographic separation and analysis wherein each liquid sample is sequentially passed through at least a portion of a chromatographic column to effect separation of a portion or the components of the sample analyzing at least a portion of the components eluted from the column and, periodically reversing the point of introduction of the liquid sample into the column such that differences observed in the analysis of the various liquid samples can be attributed to differences in the liquid samples rather than differences due to compacting of the sorbent of the column.
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 January 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 13, 1998.
- 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.