Medicinal aerosol formulations
First Claim
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1. A method of making an aerosol formulation being suitable for delivery to the lung by inhalation, comprising the steps of:
- (a) providing an aerosol container, and(b) charging to said container;
(i) a medicament in an amount sufficient to provide a plurality of therapeutically effective doses of said formulation,(ii) an mount of propellant sufficient to propel from said container said plurality of therapeutically effective doses, said propellant being substantially free of chlorofluorocarbons and comprising 1,1,1,2-tetrafluoroethane.
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Accused Products
Abstract
A self-propelling aerosol formulation which may be free from CFC'"'"'s which comprises a medicament, 1,1,1,2-tetrafluoroethane, a surface active agent and at least one compound having a higher polarity than 1,1,1,2-tetrafluoroethane.
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Citations
1 Claim
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1. A method of making an aerosol formulation being suitable for delivery to the lung by inhalation, comprising the steps of:
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(a) providing an aerosol container, and (b) charging to said container; (i) a medicament in an amount sufficient to provide a plurality of therapeutically effective doses of said formulation, (ii) an mount of propellant sufficient to propel from said container said plurality of therapeutically effective doses, said propellant being substantially free of chlorofluorocarbons and comprising 1,1,1,2-tetrafluoroethane.
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Specification
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Current Assignee3M Innovative Properties Company (3M Company)
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Original AssigneeRiker Laboratories, Inc. (3M Company)
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InventorsGreenleaf, David J., Purewal, Tarlochan S.
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Primary Examiner(s)Schofer, Joseph L.
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Assistant Examiner(s)Benston, Jr., William E.
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Application NumberUS08/792,209Time in Patent Office1,000 DaysField of Search424/45, 424/46, 424/489, 424/1.13, 252/2US Class Current424/45CPC Class CodesA61K 9/008 comprising drug dissolved o...A61K 9/124 characterised by the propel...
