Patent · US Expired

Multilayered controlled release pharmaceutical dosage form

US5395626A · kind A · utility

187Cited by
5References
4Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 23, 1994
Grant dateMar 7, 1995
Priority date—
Expiry dateMar 23, 2014

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61K9/5078
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

This invention is directed to a multilayered controlled release pharmaceutical dosage form. More particularly the dosage form is adapted for water soluble drugs and comprises a plurality of coated particles wherein each has multiple layers about a core containing a drug active whereby the drug containing core and at least one other layer of drug active is overcoated with a controlled release barrier layer and preferably an outer layer of additional drug is adapted for immediate release to preferably provide one immediate releasing layer and at least two controlled releasing layers of a water soluble drug from the multilayered coated particle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.