Patent · US Expired

Zero-order sustained release matrix tablet formulations of carbamazepine

US5980942A · kind A · utility

36Cited by

3References

13Claims

0Family size

Assignee

YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM LTD. · IL

Inventors

Ifat Katzhendler · Jerusalem, IL
Michael Friedman · Jerusalem, IL

Key dates

Filing date	Jan 23, 1998
Grant date	Nov 9, 1999
Priority date	—
Expiry date	Jan 23, 2018

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K9/2054
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A zero-order sustained-release delivery system for delivery of carbamazepine. A matrix tablet formulations of carbamazepine comprising hydrophilic polymer gel which inhibits transformation of carbamazepine into carbamazepine dihydrate by causing morphologic changes of carbamazepine crystals and results in amorphous form of carbamazepine present in the polymer matrix.

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