Patent 5980867 Issued on November 9, 1999. Estimated Expiration Date: July 6, 2018. 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.
Pharmaceutical aerosol formulations comprising flunisolide, ethanol, and a propellant selected from the group consisting of 1,1,1,2-tetrafluoroethane, 1,1,1,2,3,3,3-heptafluoropropane, and a mixture thereof.
Other References
"Comparison of Output Particle Size Distributions from Pressurised Aerosols Formulated as Solutions or Suspensions" (R.N. Dalby and P.R. Byron, Pharmaceutical Res., vol. 5, No. 1 (1988) p. 36)
The Theory and Practice of Industrial Pharmacy, Leon Lachman et al., 3rd Ed., Lea & Febiger 1986, Chapter 20, p. 597, 599 and 603
The Theory and Practice of Industrial Pharmacy, 2nd Edition, 1976, Lea & Febiger, Philadelphia, pp. 270 and 276-280
July 6, 2018. 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.
