Patent · US Expired

Preservative system for topically administrable pharmaceutical compositions

US6211238A · kind A · utility

7Cited by

15References

19Claims

0Family size

Assignee

Alcon Laboratories, Inc. · US

Inventors

Ernesto J. Castillo · Saint Peters, US
Steven H. Gerson · Fort Worth, US
Wesley Wehsin Han · Arlington, US

Key dates

Filing date	Sep 21, 1999
Grant date	Apr 3, 2001
Priority date	—
Expiry date	Sep 21, 2019

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K47/183
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Anionic surfactants are used in conjunction with an antifungal acid and a chelating agent to preserve topically administrable pharmaceutical compositions without the need for a conventional preservative such as benzalkonium chloride.

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