Apparatus and method for detecting the presence and concentration of weak acids and bases in liquids
CA 2029549 A1 · Owner: Baughman, Ernest Henry · Inventors: Baughman, Ernest Henry; Coughlin, Barbara Rose; Schick, Karl George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, The concentration of weak acid and weak base constituents or their, soluble salts, in liquids is determined by passing succeeding samples of constant volume to a separation zone wherein target constituents are volatilized by meansof reagents then volatilized analytes are stripped from the liquid matrix and carried to a detection zone at a constant flow rate wherein signals proportional to, the variations in individual target analyte concentrations between succeeding samples are generated.
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 November 9, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2012.
- 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.