Patent · US Expired

Sustained release drug delivery system utilizing bioadhesive polymers

US4617186A · kind A · utility

55Cited by

14References

12Claims

0Family size

Assignee

Alcon Laboratories, Inc. · US

Inventors

Doris Schafer · Arisdorf, CH
Rolf Schafer

Key dates

Filing date	Dec 28, 1984
Grant date	Oct 14, 1986
Priority date	—
Expiry date	Dec 28, 2004

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K47/58
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A sustained release drug delivery system suitable for ophthalmic use is described. The delivery system utilizes a cationic polymer (polyquat) to deliver a drug residue. The drug residue delivered may comprise an anionic drug or a drug-carrier complex.

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