Filtration device
CA 2381365 A1 · Owner: Soper, Adrian John · Inventors: Soper, Adrian John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nasal filtration device adapted to remove minute particles from the air entering the nostrils, the device comprising a nasal insert adapted for insertion into a nostril of the user, the insert, comprising a housing defining a passageway therethrough a filter element , disposed within, the housing and extending across the passageway. The filter element comprises a filter, membrane secured at its periphery to the interior surface of the housing so , as to provide a, fluid-tight seal between the filter membrane and the inner surface of the housing. The filter, diaphragm may be made of polypropylene fibres and the housing may be formed of rubber-, modified polypropylene, ensuring …
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 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 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.