Method for the removal of nitrogen compounds in water
CA 1072691 A · Owner: Euroc Administration Ab · Inventors: Olsson, Knut A. G.; Carlsson, Carl G. H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the removal from water of such injurious nitrogen compounds as are present in water supplies such as ground water, and in water drawn from a water catchment, supply and like source comprises treating the water with microorganisms which convert the injurious nitrogen compounds into non-injurious compounds.
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
- Granted February 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 1997.
- 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.