3-spiro-cyanin fluorochromes and their use in bioassays
CA 2422758 A1 · Owner: Icb- Institut Fur Chemo- Und Biosensorik Gmbh · Inventors: Haalck, Lutz; Gedig, Erk; Podsadlowski, Viola
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to sterically shielded stabilised fluorescent dyes , based on symmetrical or asymmetrical 3-spiro cyanins and to their use as labelling molecules in analytical methods. The inventive fluorochromes are characterised in particular in that they exhibit a significantly reduced tendency to aggregate as a result of the introduction of the bulky spiro hydrocarbon substituents and thus enable a high degree of coupling to the target molecule, without any fluorescence quenching by quench effects being observed. The fluorochromes have a high quantum yield and are therefore eminently suitable for use as fluorescent dyes in particular as a NIR , fluorescent dye for the …
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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 September 3, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2023.
- 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.