Filter canister, system containing filter canister, and their use
CA 2464694 A1 · Owner: Dreyer, Harold B. · Inventors: Dreyer, Harold B.; Nottingham, Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filter canister (10) including a frame (12); a sheet of flexible fabric material (14) that allows the flow of water therethrough the sheet of , flexible fabric material being connected to the frame in a manner defining an internal zone whereby substantially all fluid entering the internal zone from an opposite side of the sheet of flexible fabric material passes therethrough; and a conduit (16) having a first end (42) located externally of the frame and a second end (44) located within the internal zone defined by the sheet of flexible fabric material; wherein, upon connection of the first end of the conduit to a fluid intake system (60), fluid is drawn through the sheet of …
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 November 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 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.