Means and method for enhancing plant growth under field conditions
CA 2094606 A1 · Owner: Stewart E. Erickson Construction Inc. · Inventors: Erickson, Stewart E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An economic and practical system for enhancing plant growth by delivering gaseous carbon dioxide (30) to the plants. The vegetation is planted within an elongated trench (10) preferably in an overstocked condition whereby the vegetation is permitted to grow sufficiently to define a closed canopy. The carbon dioxide-rich gas (30) may be delivered to the trench by conduits (32) beneath the level of the canopy. The trenches can include a floor (12) and sidewalls (14) which extend vertically upwardly and divergently from each other to restrict the flow of air beneath the canopy thereby minimizing the dilutive effects of the atmosphere. The trenches (10) can also be oriented generally …
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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 22, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2013.
- 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.