Canadian application, no grantCanada
Method for measuring the concentration of carbon dioxide dissolved in sea water, and device therefor
CA 2109809 A1 · Owner: Centre National De La Recherche Scientifique · Inventors: Du Chaffaut, Maurice; Michard, Gil; Danguy, Theodore
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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 March 31, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 31, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1993
GrantedNo grant recorded
Term endedMarch 31, 2013
Patent numberCA 2109809 A1
Classification (IPC)G01N21/25 +2 more
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.