Watering system
CA 2427192 A1 · Owner: Moran, Christopher Raymond · Inventors: Moran, Christopher Raymond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for cultivating plants comprises a vessel (15) for receiving a plant cultivating medium (10), the vessel wall having a number of apertures (30) which are substantially covered over by a water-permeable polymer (35) which controls introduction of aqueous media (25) into the vessel (15). The vessel (15) and polymer (35) sit in a reservoir (20) for the aqueous media (25). The polymer (35) may be water-swellable and may be a hydrogel and preferably is in the form of a film, membrane, layer or sheet having a thickness in the range 0.001 mm to 5.0 mm. The polymer (35) supports transport of the aqueous media (25) through the thickness of the polymer (35) by diffusion so that …
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 October 29, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2023.
- 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.