Face mask with fan attachment
CA 2374925 A1 · Owner: Bowen, Michael L. · Inventors: Bowen, Michael L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A face mask is provided having a filter body sized to cover the nose and mouth of a wearer, a securing mechanism for holding the filter body in close fit with the wearer's face, and a fan attachment to enhance breathability and comfort of the mask. The fan is powered and configured with the exterior of the filter body to aid in drawing air through the filter media of the mask. The fan operates to draw warm, moist exhaled air from the interior volume of the mask to improve comfort, facilitate inhalation and decrease fogging of , any transparent portions of the mask or eye coverings. The fan may additionally operate to force cool, fresh air into the interior volume of the mask, also …
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 April 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2022.
- 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.