Patents by Inventor Sean J. Hancock

Sean J. Hancock has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Floating aquatic plant treatment system
    Patent number: 5409601
    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.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: April 25, 1995
    Assignee: The Lemna Corporation
    Inventors: Viet H. Ngo, Warren D. Poole, Sean J. Hancock, Timothy T. France
  • Floating aquatic plant treatment system with porous system
    Patent number: 5342512
    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.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: August 30, 1994
    Assignee: The Lemma Corporation
    Inventors: Viet H. Ngo, Warren D. Poole, Sean J. Hancock, Timothy T. France
  • Floating aquatic plant water treatment system with sprayer system
    Patent number: 5264127
    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.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: November 23, 1993
    Assignee: The Lemna Corporation
    Inventors: Viet H. Ngo, Warren D. Poole, Sean J. Hancock, Timothy T. France
  • Floating aquatic plant water treatment system
    Patent number: 5180501
    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.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: January 19, 1993
    Assignee: The Lemna Corporation
    Inventors: Viet H. Ngo, Warren D. Poole, Sean J. Hancock, Timothy T. France
  • Floating aquatic plant water treatment system
    Patent number: 5096577
    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.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: March 17, 1992
    Assignee: The Lemna Corporation
    Inventors: Viet H. Ngo, Warren D. Poole, Sean J. Hancock, Timothy T. France