U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Dosage form for time-varying patterns of drug delivery

Patent 5156850 Issued on October 20, 1992. Estimated Expiration Date: Icon_subject August 31, 2010. 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.

Patent References

3845770

3916899

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Issued on: 06/06/1978
Inventor: Choi, et al.

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Osmotic system comprising plurality of members for dispensing drug
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Patent #: 4863744
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Osmotic continuous dispensing oral delivery system containing a pharmaceutically acceptable active agent having a improved core membrane adhesion properties
Patent #: 4892739
Issued on: 01/09/1990
Inventor: Shah, et al.

Dosage form for treating cardiovascular diseases
Patent #: 4950486
Issued on: 08/21/1990
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Method for delivering dosage form for diltiazem
Patent #: 4966769
Issued on: 10/30/1990
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Manicure shield Patent #: 4984592
Issued on: 01/15/1991
Inventor: Hellein

Inventors

Assignee

Application

No. 576042 filed on 08/31/1990

US Classes:

424/473, With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.)424/472Layered unitary dosage forms

Examiners

Primary: Page, Thurman K.
Assistant: Horne, Leon R.

Attorney, Agent or Firm

International Class

A61K 009/24

Abstract

A dosage form is disclosed that comprises means inside the dosage form for providing a substantially drug-free interval before the dosage form delivers a drug from inside the dosage form. The dosage form in an embodiment comprises a drug on the exterior of the dosage form, which drug is available for immediate delivery.

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