System for treating fluids in an electric field
CA 2362660 A1 · Owner: De Baat Doelman, Jan Pieter · Inventors: De Baat Doelman, Jan Pieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
System for treating fluids, especially water in a pipe to resist scale , deposits from building up in the pipe comprising a field generating coil (10) mounted exteriorly of the pipe, an electronic circuit (14) for energising the coil to develop an alternating electromagnetic field in the fluid a sensor , (18) for sensing a parameter related to the functioning of the system and for generating a parameter dependent signal a feed back circuit for feeding back , said parameter dependent signal to said electronic circuit to control said circuit, wherein the sensor comprises a field measuring coil (16) mounted exteriorly of said pipe near the field generating coil the feed back circuit , …
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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 February 11, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2022.
- 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.