Plant watering system
CA 2493576 A1 · Owner: Graham, Neil · Inventors: Graham, Neil; Martin, Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a plant watering system and in particular a system which allows the long-term watering of plants without the need for an open reservoir. The invention uses a water insoluble polymer contained within a porous bag or enclosure (1) to hold water in a reservoir type manner which , can then be provided to the plant (7) as required.
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 July 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2025.
- 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.