Hydraulic and earth engineering – Drainage or irrigation – Porous or apertured pipe – flume – or tileway
Reexamination Certificate
2007-04-03
2007-04-03
Lagman, Frederick L. (Department: 3673)
Hydraulic and earth engineering
Drainage or irrigation
Porous or apertured pipe, flume, or tileway
C405S045000
Reexamination Certificate
active
11126073
ABSTRACT:
A system and method for efficiently delivering an aqueous solution to plants includes a hydrophilic delivery device, for example, tubing, that has a distal portion positionable adjacent a root system of a plant and a lumen for channeling an aqueous solution from an inlet to the distal portion. At least a portion of the device's wall along the distal portion has a porosity adapted for permitting a flow of the aqueous solution therethrough when acted upon by a surfactant root exudate and/or negative pressure generated by the roots due to water stress. A reservoir is adapted for holding the aqueous solution therein and is situated in fluid communication with the hydrophilic device's inlet.
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Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Lagman Frederick L.
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