Water circulation apparatus and method
CA 2352072 C · Owner: Vega Salinas, Daniel Eduardo · Inventors: Vega Salinas, Daniel Eduardo
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 conditioning water in open fish breeding cages which can solve the problems of "bloom of harmful seaweed" and the "lack of dissolved oxygen concentration in the water". The apparatus includes a tube having adjustable open upper and lower ends and an impeller for drawing a major water flow in either direction through the tube. To solve the "bloom of harmful seaweed" the apparatus draws water upward from deeper water with low algae concentration to the bloom zone dissolving and moving the harmful , seaweed far away from the cages. To solve the "lack of dissolved oxygen concentration" the apparatus draws water downward from the surface water having high …
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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 July 4, 2001 and granted September 20, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 4, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2023.
- 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.