Patent · US Expired

Opioid analgesic

US6806294B2 · kind B2 · utility

27Cited by

98References

12Claims

0Family size

Assignee

Euro-Celtique S.A. · LU

Inventors

Walter Wimmer · Limburg, DE
Bianca BRÖGMANN · Ulm, DE
Udo Hahn · Nentershausen, DE
Christof Spitzley · Hadamar, DE

Key dates

Filing date	Apr 23, 2002
Grant date	Oct 19, 2004
Priority date	—
Expiry date	Apr 23, 2022

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K31/137
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention is relative to a pharmaceutical preparation, especially for oral administration, with at least one active substance and with formulation components influencing the release of active substance, which preparation comprises at least one opiod analgesic as active substance that is formulated proportionally on the one hand for rapid release and on the other hand for delayed release in such a manner that the in vitro release rate from the preparation according to the Ph. Eur. paddle test shows a mean value of above 40% by weight after one hour and that the in vitro release rate shows a mean value that is still below 80% by weight after four hours.

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