Spectroscopic sample holder and method for using same
CA 2103446 A1 · Owner: Gagnon, James E. · Inventors: Midgley, Roland R.; Gagnon, James E.; Gagnon, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sample holder for use in infrared spectrophotometric analysis. The holder comprises a microporous sheet and is particularly useful for analysis of solutions, colloids small particle solids, flowable solids solvents, and viscous fluids. The microporous sheet preferably has a low absorbance (high spectral transmittance) in infrared wavelengths. The sample holder is especially useful for the analysis of aqueous based samples. Also a method for using, such sample holders for infrared spectrophotometric analysis.
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 June 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2014.
- 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.