Method and apparatus for producing organic based fertilizer in continuous process
Patent 5393317 Issued on February 28, 1995. Estimated Expiration Date: 
February 28, 2012. 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.
February 28, 2012. 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 3050383 3929446 Process for treating sewage sludge and fertilizer products thereof Animal waste odor treatment Fertilizer and method Patent #: 4743287 InventorAssigneeApplicationNo. 750769 filed on 08/22/1991US Classes:71/12, From sewage or night soil71/13, With other organic material71/15, From animal matter71/21, Guano, stable manure, etc.71/23, From vegetation71/24, Peat, humus material, coal, etc.71/25, From industrial wastes71/901REFUSE CONDITIONINGExaminersPrimary: Lander, Ferris H.Attorney, Agent or FirmForeign Patent References
International ClassC05F 013/00AbstractA method and apparatus for making organic based fertilizer, the method including mixing organic material with phosphate, potash, or other inorganics and water if necessary. Acid is mixed with the organic and inorganic material mixture and the resulting mixture is permitted to cure for a sufficient period of time to allow the acid to chemically break down the material of the mixture. A first quantity of ammonia is then added to the mixture, and a second quantity of ammonia is added to the mixture to produce the finished fertilizer product. Quantities of the various ingredients are adjusted to provide a fertilizer that has a desired percentage make-up of the major fertilizer elements for a specific crop. | |
