Fast sampling device and sampling method for capillary electrophoresis
CA 2176317 C · Owner: Wu, Jiaqi · Inventors: Wu, Jiaqi; Pawliszyn, Janusz B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved apparatus and method for the capillary electrophoretic separation of chemical compounds comprises carrying out on-line sample preparation by means of semipermeable members connected to the capillary separation column for selective introduction of ampholytes into the capillary separation column. Semipermeable membrane means may also be used on-line for preliminary desalting of the sample prior to its introduction into the separation column.
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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 May 10, 1996 and granted November 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2018.
- 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
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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.