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US Patent 5980882 - Drug-resin complexes stabilized by chelating agents
US Patent Issued on November 9, 1999
Estimated Patent Expiration Date:
April 16, 2017Estimated 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.
Estimated Patent Expiration Date:
April 16, 2017Estimated 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.AbstractThe invention provides a pharmaceutical composition comprising a drug-resin complex and a chelating agent in which the composition is in the form of a solid or a gel. The invention also provides a method of making such a composition and a method for improving the stability of a pharmaceutical composition.Other References
| InventorAssigneeApplicationNo. 834359 filed on 04/16/1997US Classes:424/78.12, Adsorbate or treating agent contains nitrogen424/78.1, Ion exchange resin424/483Ion-exchange resinsField of Search424/78.1, Ion exchange resin424/78.11, Plural ion exchange resins424/78.12, Adsorbate or treating agent contains nitrogen424/78.13, Oxygen or sulfur heterocycle424/78.14, Nitrogen heterocycle424/78.15, Plural nitrogen heteroatoms or rings424/78.16, Amine containing aromatic group424/78.17, Aftertreated polymer (e.g., grafting, blocking, etc.)424/483Ion-exchange resinsExaminersPrimary: Kulkosky, Peter F.Attorney, Agent or FirmUS Patent References2697059, 2751325, 2990332, 3035984, 3070503, 3070508, 3100738, 3108044, 3143465, 3352801, 3499960, 3594470, 4152493, Process for eliminating metal ions from a metal ion-containing liquid with solid chelate resinsIssued on: 05/01/1979 Inventor: Yotsumoto , et al.4172120, Cholestyramine compositions and method for treating biliary gastritis Issued on: 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well as process for its preparation Issued on: 01/05/1993 Inventor: Nijkerk, et al.5182102, Anti-glaucoma compositions Issued on: 01/26/1993 Inventor: DeSantis, Jr., et al.5186930, Sustained release oral suspensions Issued on: 02/16/1993 Inventor: Kogan, et al.5188825, Freeze-dried dosage forms and methods for preparing the same Issued on: 02/23/1993 Inventor: Iles, et al.5200473, Chelating resins and method for their use in the extraction of metal ions Issued on: 04/06/1993 Inventor: Jeanneret-Gris5217954, Formulations for stabilizing fibroblast growth factor Issued on: 06/08/1993 Inventor: Foster, et al.5288503, Cryogel oral pharmaceutical composition containing therapeutic agent Issued on: 02/22/1994 Inventor: Wood, et al.5334378, Pharmaceutical formulation in the form of aqueous suspension Issued on: 08/02/1994 Inventor: Mitani, et al.5338532, Starburst conjugates Issued on: 08/16/1994 Inventor: Tomalia, et al.5350584, Spheronization process using charged resins Issued on: 09/27/1994 Inventor: McClelland, et al.5368852, Prolonged-release liquid type of pharmaceutical preparation comprising drug-resin complex and benzoate preservative Issued on: 11/29/1994 Inventor: Umemoto, et al.5413782, Binding pharmaceuticals to ion exchange resins Issued on: 05/09/1995 Inventor: Warchol, et al.5453429, Crosslinked anion exchange particles and method for producing the particles Issued on: 09/26/1995 Inventor: Bliem, et al.5540918, Use of certain anionic surfactants to enhance antimicrobial effectiveness of ophthalmic compositions Issued on: 07/30/1996 Inventor: Castillo, et al.5575993Ionene polymers containing biologically-active anions Issued on: 11/19/1996 Inventor: Ward, et al. Foreign Patent References
International ClassesA61K 047/32A61K 009/30 |
