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

Aqueous emulsion for pharmaceutical dosage form

Patent 5019397 Issued on May 28, 1991. Estimated Expiration Date: Icon_subject May 28, 2008. 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

3207824

3845770

3865108

3916899

Diester crosslinked polyglucan hydrogels and reticulated sponges thereof
Patent #: 4002173
Issued on: 01/11/1977
Inventor: Manning ,   et al.

Apparatus for tracking moving workpiece by a laser beam
Patent #: 4063064
Issued on: 12/13/1977
Inventor: Saunders ,   et al.

Process for forming outlet passageways in pills using a laser
Patent #: 4088864
Issued on: 05/09/1978
Inventor: Theeuwes, et al.

Polymer emulsification process
Patent #: 4177177
Issued on: 12/04/1979
Inventor: Vanderhoff ,   et al.

Osmotic system with distribution zone for dispensing beneficial agent
Patent #: 4200098
Issued on: 04/29/1980
Inventor: Ayer ,   et al.

Device using hydrophilic polymer for delivering drug to biological environment
Patent #: 4207893
Issued on: 06/17/1980
Inventor: Michaels

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Inventors

Application

No. 184478 filed on 04/21/1988

US Classes:

424/473With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.)

Examiners

Primary: Cashion, Merrell C. Jr.
Assistant: Horne, J. R.

Attorney, Agent or Firm

International Class

A61K 009/24

Abstract

A dosage form is disclosed comprising a cured emulsion that coat that surrounds a drug. The emulsion comprises a lower alkyl acrylate-lower alkyl methacrylate copolymer and ethyl cellulose. The emulsion optionally comprises a hydrophilic polymer.

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