Method and apparatus for spectrometric analysis of turbid, pharmaceutical samples
CA 2383834 C · Owner: Folestad, Staffan · Inventors: Josefson, Mats; Sparen, Anders; Johansson, Jonas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and an apparatus for use in performing a quantitative analysis of a turbid pharmaceutical sample e.g. , a , tablet, a capsule or a similar sample forming a pharmaceutical dose. A pharmaceutical, turbid sample (24) is irradiated with an excitation beam (20) of , radiation, e.g. near infrared radiation. The intensity of emitted radiation (30) from , the sample (24) is detected as a function of both the wavelength of the emitted , radiation and the photon propagation time through said sample (24). Optionally, the intensity of the emitted radiation (30) from the sample (24) is also detected in a , spatially resolved manner.
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 September 18, 2000 and granted August 30, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2022.
- 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.