Suspension aerosol formulations of pharmaceutical products
First Claim
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1. In a pharmaceutical formulation for administration of micronized or powdered drug to the respiratory tract of a warm-blooded animal via inhalation wherein propellant gases are employed, the improvement comprising employing 1,1,1,2,3,3,3-heptafluoropropane as the sole propellant gas.
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Abstract
Pharmaceutical preparations for producing powder aerosols using propellant gases which use TG 227, and possibly also TG 11, TG 12, TGH 114, propane, butane, pentane or DME.
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Citations
1 Claim
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1. In a pharmaceutical formulation for administration of micronized or powdered drug to the respiratory tract of a warm-blooded animal via inhalation wherein propellant gases are employed, the improvement comprising employing 1,1,1,2,3,3,3-heptafluoropropane as the sole propellant gas.
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Current AssigneeBoehringer Ingelheim Promeco SA de CV (C.H. Boehringer Sohn AG & Co. KG)
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Original AssigneeBoehringer Ingelheim Promeco SA de CV (C.H. Boehringer Sohn AG & Co. KG)
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InventorsDaab, Ottfried, Weil, Hans-Hermann
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Primary Examiner(s)Richter; Johann
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Assistant Examiner(s)Haghighatian; Mina
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Application NumberUS10/934,611Publication NumberTime in Patent Office858 DaysField of Search424/45, 424/46, 424/489US Class Current424/45CPC Class CodesA61K 9/008 comprising drug dissolved o...A61K 9/124 characterised by the propel...C09K 3/30 for aerosols aerosol contai...
