Transporting urea for quantitative conversion into ammonia
Patent 5252308 Issued on October 12, 1993. Estimated Expiration Date: 
December 31, 2011. 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.
December 31, 2011. 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 ReferencesCatalytic method for hydrolyzing urea Patent #: 4220635 InventorAssigneeApplicationNo. 816406 filed on 12/31/1991US Classes:423/358, From organic material containing nitrogen423/235Nitrogen or nitrogenous componentExaminersPrimary: Langel, Wayne A.Attorney, Agent or FirmForeign Patent References
International ClassC01C 001/08AbstractHigh purity ammonia is quantitatively produced from urea by reaction with water in the presence of acid. A major advantage of the invention is that urea can be safely transported to a conversion site, then converted to ammonia. The net result is that high purity ammonia is available wherever it is needed without the toxic hazard presented by transporting ammonia.Other References
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