Automatic monitoring and control of the surfactant content in aqueous process solutions
CA 2332117 A1 · Owner: Wimschneider, Andrea · Inventors: Krey, Wolfgang; Kling, Hans-Willi; Opitz, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for automatically determining the inorganically and/or organically bound carbon contained in an aqueous cleaning solution, comprising the following program-controlled steps: a) drawing a sample from the cleaning solution with a predetermined volume b) optionally, liberating the sample from solids and/or homogenising the sample c) , optionally, diluting the sample with water according to a ratio which is predetermined or determined as a result of a preliminary determination d) , determining the inorganically and/or organically bound carbon using techniques known per se, e) transferring the result of the determination to a remote location and issuing …
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 April 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2021.
- 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.