Color coated layer-by-layer microcapsules serving as combinatory analysis libraries and as specific optical sensors
CA 2494782 A1 · Owner: Baude, Barbara · Inventors: Daehne, Lars; Baude, Barbara; Voigt, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Monodisperse colloids were coated with polyelectrolytes by means of the layerby-layer method. The template cores can remain inside or can be dissolved. Different fluorescent dyes are covalently bound in a defined amount to the polyelectrolytes. The amount of dye is controlled by varying the label content or by the Co deposition of unlabeled polymers. Different dye layers are separated from one another by intermediate layers thereby suppressing unwanted interactions. Conversely, a FRET signal can be generated between suitable dye pairs situated at short distances (0 - 6 nm) from one another. This signal can be controlled independent of the dye concentration by the number of …
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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 July 29, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2025.
- 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.