The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 1995
Filed:
Jul. 06, 1993
Applicant:
Inventors:
Viet H Ngo, Minneapolis, MN (US);
Warren D Poole, St. Paul, MN (US);
Sean J Hancock, Eagan, MN (US);
Timothy T France, Oakdale, MN (US);
Assignee:
The Lemna Corporation, Mendonta Heights, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210151 ; 210170 ; 2102421 ; 405 52 ;
Abstract
A floating aquatic plant water treatment system (31) utilizes a serpentine channel (36) defined by dividing walls (34). Floating plants (72) are distributed across the water surface by a floating grid structure (32). The grid structure (32) is preassembled into Z-fold bundles (88) which are towed onto the water and unfolded. The treatment system uses sprayers (62) to control growth conditions. Porous baffles (46) are placed along portions of the channel (36) to provide intimate contact with a larger portion of the water while allowing free flow.