Patents by Inventor James P. Cave

James P. Cave 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).

  • Anaerobic treatment
    Patent number: 4415453
    Abstract: Treatment of waste streams, particularly acidic petrochemical wastes, in anaerobic filter at high loadings with high rates of recycle. The effluent from the top of the filter is passed into a gas-disengaging-solids-settling zone containing a quiescent body of the liquid of said effluent. Particles of solid biomass settle in that liquid body and are withdrawn, with the liquid, and recycled to the base of said filter together with fresh acidic waste and added inorganic alkaline material. The outfall from the filter is fed to an aerobic digester and the resulting activated sludge is recycled to the filter. The alkaline material is preferably magnesium oxide or carbonate. Sodium formate may also be used as the alkaline material.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: November 15, 1983
    Assignee: Celanese Corporation
    Inventors: Enrique R. Witt, William J. Humphrey, James P. Cave
  • Anaerobic treatment
    Patent number: 4366059
    Abstract: Treatment of waste streams, particularly acidic petrochemical wastes, in anaerobic filter at high loadings with high rates of recycle. The effluent from the top of the filter is passed into a gas-disengaging-solids-settling zone containing a quiescent body of the liquid of said effluent. Particles of solid biomass settle in that liquid body and are withdrawn, with the liquid, and recycled to the base of said filter together with fresh acidic waste and added inorganic alkaline material. The outfall from the filter is fed to an aerobic digester and the resulting activated sludge is recycled to the filter. The alkaline material is preferably magnesium oxide or carbonate. Sodium formate may also be used as the alkaline material.
    Type: Grant
    Filed: October 21, 1980
    Date of Patent: December 28, 1982
    Assignee: Celanese Corporation
    Inventors: Enrique R. Witt, William J. Humphrey, James P. Cave
  • Anaerobic treatment
    Patent number: 4315823
    Abstract: Treatment of waste streams, particularly acidic petrochemical wastes, in anaerobic filter at high loadings with high rates of recycle. The effluent from the top of the filter is passed into a gas-disengaging-solids-settling zone containing a quiescent body of the liquid of said effluent. Particles of solid biomass settle in that liquid body and are withdrawn, with the liquid, and recycled to the base of said filter together with fresh acidic waste and added inorganic alkaline material. The outfall from the settling zone is fed to an aerobic digester and the resulting activated sludge is recycled to the filter. The alkaline material is preferably magnesium oxide or carbonate. Sodium formate may also be used as the alkaline material.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: February 16, 1982
    Assignee: Celanese Corporation
    Inventors: Enrique R. Witt, William J. Humphrey, James P. Cave