Catalytic method for hydrolyzing urea
Patent 4168299 Issued on September 18, 1979. Estimated Expiration Date: 
March 20, 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.
March 20, 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 References 3826815 3851041 3896212 3922222 Method of hydrolyzing urea contained in waste water streams Patent #: 4087513 InventorApplicationNo. 05/888440 filed on 03/20/1978US Classes:423/358, From organic material containing nitrogen210/908, Organic423/232, Utilizing carbonate as reactant423/237, Ammonia423/437.1, Carbon dioxide or carbonic acid564/69With ammonia synthesisExaminersPrimary: Vertiz, O. R.Assistant: Roy, Thomas W. Attorney, Agent or FirmInternational ClassesC02F 1/02 (20060101)C01C 1/00 (20060101) C01C 1/10 (20060101) C01C 1/08 (20060101) AbstractA method for hydrolyzing urea in aqueous solutions such as waste-water streams which comprises heating the aqueous solution containing urea in the presence of a catalytic amount of vanadium pentoxide for sufficient time and at sufficient temperatures to effect hydrolysis of substantially all of the urea to ammonia and carbon dioxide. |
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