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:
Jan. 17, 2012
Filed:
Dec. 20, 2002
Howard Allen Ketelson, Fort Worth, TX (US);
Nissanke L. Dassanayake, Arlington, TX (US);
Thomas Christopher Carey, Fort Worth, TX (US);
David L. Meadows, Fort Worth, TX (US);
Howard Allen Ketelson, Fort Worth, TX (US);
Nissanke L. Dassanayake, Arlington, TX (US);
Thomas Christopher Carey, Fort Worth, TX (US);
David L. Meadows, Fort Worth, TX (US);
Novartis AG, Basel, CH;
Abstract
The use of nanoparticles of inorganic materials (e.g., synthetic smectite clays) in ophthalmic compositions is described. The nanoparticles are utilized as biologically inert carriers or depots for biocides. The nanoparticles are particularly useful in preventing or reducing the uptake of biocides from ophthalmic compositions by contact lenses, when the compositions are applied to the lenses.