Process for wastewater purification
Patent 4971698 Issued on November 20, 1990. Estimated Expiration Date: 
January 6, 2009. 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.
January 6, 2009. 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 ReferencesMicrobial degradation of obnoxious organic wastes into innocuous materials Biodegradation of halogenated aliphatic hydrocarbons Process and apparatus for removal of nitrate from surface and ground water, in particular drinking water Detoxification of chlorinated aromatic compounds by organism NRRL B-18087 Patent #: 4804629 InventorsAssigneeApplicationNo. 304432 filed on 01/06/1989US Classes:210/615, Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.)210/908OrganicExaminersPrimary: Wyse, Thomas G.Attorney, Agent or FirmInternational ClassC02F 003/10Foreign Application Priority Data1987-05-07 DEAbstractA process is disclosed for the purification of wastewaters containing biodegradable aliphatic compounds which is characterized in that these compounds are brought into contact with microorganisms capable of biodegradation immobilized by embedment in a gel-type organic polymer that does not denature the microorganisms. | |
