Patents by Inventor Charles S. Block

Charles S. Block 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 wastewater containing phosphorus compounds
    Patent number: 4488967
    Abstract: Wastewater containing phosphorus values and BOD is initially admixed with recycled sludge containing activated biomass under anaerobic conditions, then contacted with oxygen-containing gas, followed by separation of a dense sludge layer from the mixed liquor. A portion of the sludge layer, containing the activated biomass, is held under non-aeration conditions for sufficient time to reduce any nitrates and/or nitrites contained therein, before admixture of the recycled sludge with the wastewater influent.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: December 18, 1984
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Charles S. Block, Sun-Nan Hong
  • Activated sludge system with staggered partition basin
    Patent number: 4087361
    Abstract: A wastewater treatment system of the activated sludge type is disclosed having an aeration basin provided with staggered partitions and of a particular geometrical design and mode of operation whereby more efficient purification of the wastewater may be achieved in a system of a given size.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: May 2, 1978
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Charles S. Block, Michael S. Chen, Olaf J. Noichl, Sun-Nan Hong
  • Activated sludge system with staggered partition basin
    Patent number: 4081368
    Abstract: A wastewater treatment system of the activated sludge type is disclosed having an aeration basin provided with staggered partitions and of a particular geometrical design and mode of operation whereby more efficient purification of the wastewater may be achieved in a system of a given size.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: March 28, 1978
    Assignee: Air Products & Chemicals, Inc.
    Inventors: Charles S. Block, Michael S. Chen, Olaf J. Noichl, Sun-nan Hong
  • Wastewater treatment system with controlled mixing
    Patent number: 3954606
    Abstract: A wastewater treatment system of the activated sludge type is disclosed in which variable degrees of effective staging of the mixed liquor are achieved in an oxygenated aeration basin without the use of walls or partitions to physically divide the mixed liquor into separate liquid stages.
    Type: Grant
    Filed: November 12, 1973
    Date of Patent: May 4, 1976
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Charles S. Block, Michael S. Chen, Olaf J. Noichl