A method and a system for disinfecting air in air conditioning ducts
CA 2134202 C · Owner: Deso Star Holland B.V. · Inventors: Weibel, Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for disinfecting air in ventilation ducts on which a non-poisonous and substantially non-volatile disinfectant, in particular a quaternary ammonium complex, is vaporised as an aerosol by means of micro vaporisors into the air flow duct, and is allowed to precipitate on the walls of the duct, and in which furthermore, the air in the duct can be ionised without substantial ozone production, as well as a system for executing this method, comprising an air duct portion with means for disinfecting the air flow therein comprising an assembly of vaporising nozzles connected by means of a metering pump, to a reservoir for dissolved disinfectant, and a flow meter for controlling 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 April 28, 1993 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 28, 2015.
- 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.