Electrostatically enhanced media air filtration system
CA 2428611 A1 · Owner: Ferguson, Mark A. · Inventors: Chapman, Richard H.; Marconi, Fred A. Jr.; Ferguson, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a portable air filtration system for removing contaminants from room air. In one embodiment, the air filtration system comprises a power supply and an air blower module electrically connected to the power supply. The air filtration system further comprises an ionization module engaged with the air blower module and comprising a first control grid and a high voltage grid electrically connected to the power supply. The air filtration system further comprises a filter module removably engaged with the ionization module. The filter module comprises a filter and a second control grid. Engagement of the filter module and the ionization module creates an electrical connection …
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 August 21, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 21, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 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.