Filter for separating particles from gases
CA 2045146 A1 · Owner: Hunt, Rolf · Inventors: Odenmo, Peter; Hunt, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filter (1) for separating particles from gases by screening said filter comprising bag-shaped filter material (7) made of filter material, each filter member having at least one opening for discharging the gases flowing through the filter material of said filter member. Furthermore, the filter (1) has pervious stiffening means arranged inside said filter members. The outsides of the filter members (7) are provided with fibres (13) hanging loosely from the filter material, electrically conductive means (8) being arranged inside and/or outside the filter members for charging said fibres.
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 January 2, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 2, 2012.
- 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.