Composition comprising salbutamol

Patent 4751071 Issued on June 14, 1988. Estimated Expiration Date:

January 7, 2007. 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

3644353

Osmotic devices having composite walls
Patent #: 4077407
Issued on: 03/07/1978
Inventor: Theeuwes , et al.

Osmotic system for the controlled and delivery of agent over time
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Inventor: Theeuwes

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Inventors

Application

No. 07/001135 filed on 01/07/1987

US Classes:

424/467, Printed, embossed, grooved, or perforated514/649, Amino nitrogen attached to aryl ring or aryl ring system by an acyclic carbon or acyclic chain564/360Additional hydroxy, bonded directly to carbon, or ether oxygen attached directly or indirectly to the acyclic carbon or chain by acyclic nonionic bonding with no amino nitrogen between the additional hydroxy or ether oxygen and the aryl ring or ring system (H of -OH may be replaced by a substituted or unsubstitited ammonium ion or a Group IA or IIA light metal)

Examiners

Primary: Schofer, Joseph L.
Assistant: Teskin, F. M.

Attorney, Agent or Firm

International Classes

A61K 9/00 (20060101)
A61M 31/00 (20060101)

Abstract

An osmotic delivery system is disclosed for delivering a useful agent at a controlled and constant rate modulated by a pulsed delivery of the useful agent to an environment of use.