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

Binder-free granules with delayed release of the active compound

Patent 4902516 Issued on February 20, 1990. Estimated Expiration Date: Icon_subject April 6, 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

3773919

Processes for preparation of microspheres
Patent #: 4166800
Issued on: 09/04/1979
Inventor: Fong

Process for preparation of microspheres
Patent #: 4384975
Issued on: 05/24/1983
Inventor: Fong

Compressed products with retarded release of active substance, a process for their preparation and a process for the long-term administration of medicaments
Patent #: 4491575
Issued on: 01/01/1985
Inventor: Korsatko

Galenical administration form of METOCLOPRAMIDE, method for its preparation and medicament comprising the new form
Patent #: 4656024
Issued on: 04/07/1987
Inventor: Laruelle

Dosage units for controlled release of active material
Patent #: 4666702
Issued on: 05/19/1987
Inventor: Junginger

Microencapsulation of water soluble active polypeptides
Patent #: 4675189
Issued on: 06/23/1987
Inventor: Kent ,   et al.

Granular delayed-release form of pharmaceutically active substances Patent #: 4728513
Issued on: 03/01/1988
Inventor: Ventouras

Inventors

Assignee

Application

No. 178107 filed on 04/06/1988

US Classes:

424/497, Containing solid synthetic polymers424/470, Where particles are granulated424/482Containing solid synthetic polymers

Examiners

Primary: Page, Thurman K.

Attorney, Agent or Firm

Foreign Patent References

  • 0149744 EP. 11/13/1984
  • 0164571 EP. 05/13/1985
  • 0172422 EP. 07/13/1985
  • 6602562 DE. 07/13/1968
  • 2620456 DE. 11/13/1977
  • 2917037 DE. 12/13/1980

International Class

A61K 009/16

Foreign Application Priority Data

1987-04-10 DE

Abstract

Binder-free granules for oral and parenteral administration with delayed release of the active compound, consisting of a pharmaceutical active compound or granules thereof and a coating of 1 to 20% by weight of poly-D(-)-3-hydroxybutyric acid, based on the total weight, and a process for their preparation.

Other References

  • Juni et al; "Controlled Release of Aclarubicin . . . " (1986); Chemical Abstracts, vol. 105, p. 401, Ref 85 056
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