Techniques for analyzing products containing a coloring agent
CA 2503199 A1 · Owner: Philips, J. Christopher · Inventors: Philips, J. Christopher; Gill, Richard Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for detecting a tracer in a preparation by precipitating a coloring agent from a sample of the preparation especially where the , coloring agent otherwise interferes with detection of the tracer. A sample of the preparation may be contacted with an effective amount of a precipitating agent to precipitate the coloring agent in the sample yielding a sample , supernatant having a reduced concentration of coloring agent compared to the preparation. Detection of the tracer in the supernatant may produce a result which may be evaluated to assist in quality validation in a process of manufacturing the preparation or authenticating the preparation.
Read the whole patent
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 October 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 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
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.