Catalytic method for hydrolyzing urea
Patent 4220635 Issued on September 2, 1980. Estimated Expiration Date: 
May 14, 1999. 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.
May 14, 1999. 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 Catalytic method for hydrolyzing urea Patent #: 4168299 InventorApplicationNo. 06/039231 filed on 05/14/1979US Classes:423/358, From organic material containing nitrogen423/437.1Carbon dioxide or carbonic acidExaminersPrimary: Langel, Wayne A.Attorney, Agent or FirmInternational ClassesC02F 1/02 (20060101)C01C 1/00 (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 a vanadium compound for sufficient time and at sufficient temperatures to effect hydrolysis of at least a portion of the urea to ammonia and carbon dioxide.Other References
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