Differential separation assay
CA 2128317 A1 · Owner: Ghazarossian, Vartan · Inventors: Ghazarossian, Vartan; Manian, Bala S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrophoresis-based assay system for detection of one or more target substances, i.e. an analyte tagged with fluorescent binding agents. The analyte is reacted with an excess amount of fluorescently tagged binding agent. The reaction mixture is subjected to electrophoresis and the migration of bound and free fluorescent substances are timed at a location where there is a spatial and optical differentiation of the two substances. An optical detector supplies signals corresponding to fluorescent amplitudes of the two substances. The free fluorescent substance arrives at a time expected from calibration runs. The optical signal is a marker for a second time, either earlier or later when …
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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 June 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2014.
- 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.