06918404 is referenced by 671 patents and cites 60 patents.

Irrigation and drainage systems are disclosed, including a saturated zone and at least one pipe in communication with the saturated zone. The pipe(s) can be configured to comprise a tubarc porous microstructure for conducting water from the saturated zone to an unsaturated zone in order to drain the water from the saturated zone. The water can be delivered from the saturated zone to the unsaturated zone through the tubarc porous microstructure, thereby permitting the water to be harnessed for irrigation or drainage through the hydrodynamic movement of the water from one zone of saturation or unsaturation to another.

Title
Irrigation and drainage based on hydrodynamic unsaturated fluid flow
Application Number
10/822969
Publication Number
6918404 (B2)
Application Date
April 13, 2004
Publication Date
July 19, 2005
Inventor
Elson Dias da Silva
Campinas
BR
Agent
Ortiz & Lopez PLLC
Luis M Ortiz
Kermit D Lopez
Assignee
Tubarc Technologies
NM, US
IPC
A01G 027/04
B41J 002/175
A01G 027/04
F04F 010/00
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