Aerosol formulations containing beclomethasone dipropionate-1, 1, 1, 2-tetrafluoroethane solvate

Patent 5833950 Issued on November 10, 1998. Estimated Expiration Date:

June 18, 2017. 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.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Glaxo Group Limited

Application

No. 877796 filed on 06/18/1997

US Classes:

424/45, Organic pressurized fluid424/46, Powder or dust containing514/937DISPERSION OR EMULSION

Examiners

Primary: Bawa, Raj

Attorney, Agent or Firm

Bacon & Thomas, PLLC

Foreign Patent References

0372777 EP. 06/13/1990
0 518 600 EP. 12/13/1992
11495 WO. 08/13/1991
92 06675 WO. 04/13/1992
92 22287 WO. 12/13/1992
93/11743 WO. 06/13/1993

International Class

A61K 009/12

Foreign Application Priority Data

1992-07-31 GB

Abstract

This invention relates to novel aerosol formulations for administering drugs, in particular, for the administration of a beclomethasone ester, by inhalation. In particular, the invention provides novel aerosol formulations consisting essentially of (a) beclomethasone dipropionate in the form of a solvate with 1,1,1,2-tetrafluoroethane (CF3 CH2 F) and one or more fluorocarbon or hydrogen-containing chlorofluorocarbon propellants, or (b) anhydrous beclomethasone dipropionate and 1,1,1,2,3,3,3-heptafluoro-n-propane as propellant.