Process for manufacturing effervescent granules and tablets
Patent 4614648 Issued on September 30, 1986. Estimated Expiration Date: 
August 20, 2004. 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.
August 20, 2004. 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 2463962 2497057 2985562 2999293 3401216 3480185 3773922 3903255 Effervescent stannous fluoride tablet Patent #: 4267164 InventorApplicationNo. 06/643980 filed on 08/20/1984US Classes:424/44, Gas produced in situ by chemical reaction252/183.16, Contains carbonate or bicarbonate252/363.5, SOLIDS WITH SOLUTION OR DISPERSION AIDS514/163, With carboxylic acid, ester or metal salt thereof514/474, Ascorbic acid or derivative (e.g., vitamin C, etc.)514/629, R is hydrogen or a lower saturated alkyl of less than seven carbons514/960, SIGNIFICANT, TABLET FORMULATION (E.G., DESIGNATED EXCIPIENT, DISINTEGRANT, GLYDENT OR LUBRICANT, ETC.)514/961, Binder therefor516/19The compound contains -C(=O)OH group or salt thereofExaminersPrimary: Lovering, Richard D.Attorney, Agent or FirmInternational ClassesA61K 9/46 (20060101)B01J 2/16 (20060101) Foreign Application Priority Data1982-12-21 FRAbstractThe invention relates to a process for manufacturing effervescent tablets consisting in the steps of careful humidifying of the acid+base mixture, pre-drying and final drying and granulating.It has been found that these operations can be performed in a single apparatus, either integrally in fluid bed, or with vacuum-drying. | |
