Inhalation pharmaceuticals
Patent 5260306 Issued on November 9, 1993. Estimated Expiration Date: 
July 2, 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.
July 2, 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 ReferencesSodium chromoglycate inhalation medicament Composition for treating airway disease Pyranoquinolinones and analogs thereof Inhalation pharmaceuticals Solid nedocromil sodium, useful for the removal of obstructed air pathways Patent #: 4760072 InventorsAssigneeApplicationNo. 727322 filed on 07/02/1991US Classes:514/291, Plural hetero atoms in the tricyclo ring system514/826, ASTHMA514/951POWDERS, GRANULES OR PARTICLES OF SPECIFIED MESH OR PARTICLE SIZEExaminersPrimary: Schenkman, LeonardAttorney, Agent or FirmInternational ClassA61K 031/44Foreign Application Priority Data1981-07-24 GBAbstractThere is described finely divided nedocromil sodium, comprising a therapeutically effective proportion of individual particles capable of penetrating deep into the lung, characterized in that a bulk of the particles which is both unaggolomerated and unmixed with a coarse carrier, is sufficiently free flowing to be filled into capsules on an automatic filling machine and to empty from an opened capsule in an inhalation device.There is also described a method of making the fine particles and pharmaceutical formulations containing them.Other References
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