Process and apparatus for waste water treatment
Patent 4181604 Issued on January 1, 1980. Estimated Expiration Date: 
April 4, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 4, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus Apparatus for treating waste water Patent #: 4045344 InventorsAssigneeApplicationNo. 05/893360 filed on 04/04/1978US Classes:210/615, Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.)210/150, WITH GAS-LIQUID SURFACE CONTACT MEANS210/622Of separated liquidExaminersPrimary: Wyse, Thomas G.Attorney, Agent or FirmInternational ClassesC02F 3/10 (20060101)C02F 3/06 (20060101) Foreign Application Priority Data1977-04-13 JPAbstractWaste water containing organic pollutants is purified by biological treatment with aerobic microorganisms supported on hollow fibers having microporous walls through which oxygen is supplied to the microorganisms. | |
