Assay method using surface plasmon resonance spectrometry
CA 2048694 A1 · Owner: Garland, Peter Bryan · Inventors: Charles, Stephen Alexander; Pollard-Knight, Denise Vera; Finlan, Martin Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an assay for an analyte particularly a hapten, changes in, refractive index at a solid surface are monitored by means of surface plasmon resonance spectroscopy. The signal is enhanced by conjugating to an assay reagent a substance capable of giving a strong signal. One example is an enzyme used to catalyse production of an insoluble product. Another example is latex beads. Assay formats include sandwich assay format, and a competition assay format preferably involving displacement of the conjugate.
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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 March 21, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2012.
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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.