Canister with porous plastic ends
CA 2184379 C · Owner: Multiform Desiccants, Inc. · Inventors: Berger, Lora Leigh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A canister (10) including an elongated hollow plastic body (11) having a wall with inner (13) and outer (12) surfaces, an edge portion (15) on the wall defining an open end, an end (17) on the edge portion (15) extending transversely to the inner (13) and outer (12) surfaces, a porous plastic member (14) having an outer edge portion (19) extending across the open end and fused to the end, an inner portion (20) on the porous plastic member (14) located radially inwardly of the outer edge portion (19) and extending into the body (11) and fused to the inner surface (13) (22) of the wall adjacent the end (17) thereof, and a gas-treating material (23) in the body (11). A method of fabricating …
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 March 7, 1995 and granted February 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2017.
- 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.