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. 02, 1995
Filed:
Feb. 18, 1994
Applicant:
Inventors:
Fu-Pao Tsao, Lawrenceville, GA (US);
Susan A Littlefield, Norcross, GA (US);
John H Stone, Conyers, GA (US);
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61L / ; C11D / ; C11D / ; G02C / ;
U.S. Cl.
CPC ...
134 26 ; 134 42 ; 252106 ; 252153 ; 252170 ; 252173 ; 252D / ; 422 28 ; 514839 ; 514840 ;
Abstract
A rapid cleaning and disinfecting method and composition for ophthalmic devices, e.g. contact lenses. The composition includes, on a weight basis, 10-50% of a C.sub.3-8 alkylene glycol, 2-30% of a lower alkanol, 2-15% of a surfactant, 0-2% pH adjusting agent, 0-5% tonicity builder, viscosity enhancing agent in an amount from 0 to the amount required to bring the solution viscosity to 100 cps, and the balance water. The method involves mechanically rubbing the ophthalmic device with the cleaning/disinfecting composition followed by rinsing the device.