Apparatus for automated polyelectrolyte measurement
CA 2078543 C · Owner: Mutek Gmbh · Inventors: Krah, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Devices for determining the flow potential especially of fluid process substances (waste water) are known which comprise a sample vessel (30) with an electrically insulating cylindrical inner section (31), a large-diameter filter section (32) above and adjoining the latter electrodes (34, 35) substantially in the region of the ends of the cylindrical inner section, an insulating piston (33) which can reciprocate in the cylindrical inner section (31) with a defined, slight clearance and devices to measure the charge shift between the electrodes. In order to automate the determination of polyelectrolytes it is proposed to provide an outlet pipe (41, 42) opening into the base of the …
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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 8, 1991 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2013.
- 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.