Apparatus and method for purifying air
CA 2464688 A1 · Owner: Verhoff, Marta Lea · Inventors: Verhoff, Marta Lea; Gartstein, Vladimir; Gaw, Chinto Benjamin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for removing particles from air including an inlet for receiving , a flow of air a first chamber in flow communication with the inlet wherein a , charged spray of semi-conducting fluid droplets having a first polarity is introduced to the air flow so that the particles are electrostatically attracted to and retained by the spray droplets and an outlet in flow , communication with the first chamber wherein the air flow exits the apparatus substantially free of the particles. The first chamber of the apparatus further includes a collecting surface for attracting the spray droplets a , power supply, and a spray nozzle connected to the power supply for receiving fluid and …
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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 October 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2024.
- 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.