Reaction monitoring
CA 2354459 A1 · Owner: Astrazeneca Ab · Inventors: Josefson, Mats; Langkilde, Frans; Svensson, Olof
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method for monitoring a chemical reaction of pharmaceutical relevance, comprising the steps of: consecutively obtaining Raman spectrum samples of a solution of chemical constituents contained within a reaction vessel, by irradiating, with substantially monochromatic radiation said solution and detecting the scattered radiation; processing said Raman spectrum samples by means of a multivariate data analysis (MVDA) for consecutively generating at least a first main component related to a latent variable indicative of the progress of the reaction wherein the multivariate data analysis is independent from calibration using reference measurements of objects …
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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 December 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2021.
- 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.