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. 11, 1995
Filed:
Aug. 03, 1994
Barbara L Heyl, Atlanta, GA (US);
Lynn C Winterton, Roswell, GA (US);
Kai C Su, Alpharetta, GA (US);
Jack C White, Stone Mountain, GA (US);
William M Hung, Alpharetta, GA (US);
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
A method is provided for the sterilization or disinfection of an object in need of such treatment. The object is immersed in a sterilizing or disinfecting solution containing an antimicrobial effective amount of at least one cationic or at least one anionic antimicrobial agent in the presence of a scavenger element containing a scavenger material which is a cationic exchange resin or an anionic exchange resin. Over a period of time, the scavenger element removes from the solution the cationic or anionic antimicrobial agent at a rate which permits sterilization or disinfection of the object and which prevents undesirable build-up of the antimicrobial agent in or on the object. The object is allowed to remain in the solution for a time sufficient for the scavenger element to remove a sufficient amount of the antimicrobial agent to render the object safe for use for its intended purpose and the object is then removed from the solution. The method is particularly useful in the sterilization or disinfection of contact lenses. An apparatus for sterilizing or disinfecting objects in need of such treatment is also disclosed.