The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2003
Filed:
May. 19, 2000
Gunther Bellmann, Berlin, DE;
Gudrun Claus-Herz, Berlin, DE;
Bausch & Lomb Incorporated, Rochester, NY (US);
Abstract
Ophthalmic composition with prolonged residence time on the eye, in particular in the form of a gel which can be administered as drops, of an ointment or the like, containing a free-flowing vehicle with increased viscosity and a preservative, and, where appropriate, one or more active ingredients and conventional additives such as tonicity agents, substances to adjust the pH etc. The preservative is essentially formed according to the invention by a benzyllauryldimethylammonium salt. The invention furthermore relates to the use of a benzyllauryldimethylammonium salt as preservative for producing ophthalmic compositions intended for repeated use over lengthy periods and/or formulated for a lengthy residence time on the eye after each use, whereby irritation and/or damage to the tissue of the eye are avoided.