Phosphate removal from aquaria using immobilized ferric hydroxide
Patent 5124044 Issued on June 23, 1992. Estimated Expiration Date: 
January 9, 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.
January 9, 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 References 3499837 3723306 Preferential removal of ammonia and phosphates Process for the production of materials characterized by a continuous web matrix or force point bonding Patent #: 5019311 InventorsAssigneeApplicationNo. 639048 filed on 01/09/1991US Classes:210/683, Anions210/169, Aquarium or swimming pool210/170, Geographic (e.g., drainage ditch, septic, pond)210/504, With adhered coating or impregnant210/747Including geographic feature (e.g., drainage ditch, septic, pond)ExaminersPrimary: Silverman, Stanley S.Assistant: Nessler, Cynthia L. International ClassC02F 001/58AbstractImmobilized ferric hydroxide selectively removes phosphate from aquarium water. The material provides a healthier environment and retards growth of undesirable algae and bacteria. | |
