Method for the colorimetric determination of an analyte with a pqq-dependent dehydrogenase
CA 2120453 A1 · Owner: Boehringer Mannheim Gmbh · Inventors: Unkrig, Volker; Hoenes, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for the colorimetric determination of an analyte by means of enzymatic oxidation with a PQQ-dependent dehydrogenase in the presence of an electron acceptor from the group of the electron-rich aromatic nitroso compounds by enzymatic reduction of the nitroso compound to an imino compound and detection of the imino compound by colour formation. In addition the invention concerns a corresponding agent containing a PQQ-dependent dehydrogenase an electon-, rich aromatic nitroso compound as well as if desired, a, detection reagent for imino compounds. The invention in addition concerns novel nitrosoamino compounds which form coloured quinone diimines on reduction as …
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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 31, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2016.
- 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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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.