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:
May. 26, 2015
Filed:
Mar. 25, 2009
Howard Allen Ketelson, Dallas, TX (US);
Ryan Desousa, Fort Worth, TX (US);
Nissanke L. Dassanayake, Fort Worth, TX (US);
Mary E. Luck, Fort Worth, TX (US);
Howard Allen Ketelson, Dallas, TX (US);
Ryan Desousa, Fort Worth, TX (US);
Nissanke L. Dassanayake, Fort Worth, TX (US);
Mary E. Luck, Fort Worth, TX (US);
Alcon Research, Ltd., Fort Worth, TX (US);
Abstract
Methods of inhibiting the uptake of cationic biocides into medical devices such as contact lenses and implants are described. Methods of stabilizing emulsions containing cationic biocides are also described. In particular, the present invention provides for the use of polymers acting as labile anionic polyelectrolytes to reversibly bind cationic biocides. The reversible binding can reduce the deleterious effects of cationic biocides while maintaining biocidal activity. Preferred polymers include galactomannan and polyvinyl alcohol.