Method for corrosion-proofing of a water system
CA 2092421 C · Owner: Guldager Electrolyse A/S · Inventors: Fabricius, Claus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for electrolytically corrosion-proofing a water system having, a tank and a piping system connected thereto through which water flows. At least two, electrodes are fitted in the tank and one of these electrodes comprises a metal aluminium and, serves as a cathode. An electrolysis power source is connected to the electrodes. The, energising of the electrodes for treating the water in the tank allows corrosion-proofing of the, tank and the piping system.
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 September 27, 1990 and granted August 28, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 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.