Patents by Inventor Keith B. Clarke

Keith B. Clarke 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).

  • Treatment of water to remove gas vacoulate cyanobacteria
    Patent number: 5501800
    Abstract: The treatment of water to remove gas vacuolate cyanobacteria is effected by subjecting the water to a predetermined pressure by being pumped down a centrally located pipe in a bore-hole, which is steel lined. This causes the gas vesicles in the cyanobacteria to collapse. The treated water is then stored in a settling tank where the cyanobacteria sink to the bottom and can be removed along with any other sediment in the water. The method can be applied to decrease the amount of cyanobacteria with gas vesicles in a lake or other water impoundment. (FIG.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: March 26, 1996
    Inventors: Keith B. Clarke, Anthony E. Walsby
  • Treatment of water to remove gas vacuolate cyanobacteria
    Patent number: 5422002
    Abstract: The treatment of water to remove gas vacuolate cyanobacteria is effected by subjecting the water to a predetermined pressure by being pumped down a centrally located pipe in a bore-hole, which is steel lined. This causes the gas vesicles in the cyanobacteria to collapse. The treated water is then stored in a settling tank where the cyanobacteria sink to the bottom and can be removed along with any other sediment in the water. The method can be applied to decrease the amount of cyanobacteria with gas vesicles in a lake or other water impoundment. (FIG.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: June 6, 1995
    Assignees: East Anglian Water Company, Anthony E. Walsby
    Inventors: Keith B. Clarke, Anthony E. Walsby