Coatable ion exchange resins
Patent 4859461 Issued on August 22, 1989. Estimated Expiration Date: 
May 4, 2007. 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 4, 2007. 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 2990332 Iron-resin adsorbate Prolonged release pharmaceutical preparations Diethylcarbamazine resinate and styrlpyridinium resinate-diethylcarbamazine resinate edible anthelmintic tablets for companion animals Patent #: 4352891 InventorsAssigneeApplicationNo. 07/046378 filed on 05/04/1987US Classes:424/78.1Ion exchange resinExaminersPrimary: Ore, Dale R.Attorney, Agent or FirmInternational ClassesA61K 9/16 (20060101)A61K 47/48 (20060101) A61K 9/50 (20060101) AbstractSulfonic acid cationic exchange resin particles which have been treated to improve their coatability with up to about 20% by weight of a compound selected from hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropyl sorbitol, sorbitol, and polyvinylpyrrolidone.Other References
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