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:
Nov. 12, 2002
Filed:
Feb. 28, 2001
Applicant:
Inventors:
Jeanne Y. Ellis, Lynnfield, MA (US);
Edward J. Ellis, Lynnfield, MA (US);
Assignee:
Vista Scientific L.L.C., Andover, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61L 2/18 ; C11D 3/48 ;
U.S. Cl.
CPC ...
A61L 2/18 ; C11D 3/48 ;
Abstract
The present invention is based on the unexpected finding that the combination of a carboxylate containing anionic polymer, of molecular weight greater than about 1000 daltons, with cleaning agents, provides improved contact lens cleaning preparations. The present invention includes contacting a soiled contact lens with an aqueous solution comprising an anionically charged polymer and a surfactant or surfactant combination selected from the classes of nonionic surfactants, anionic surfactants, and amphoteric surfactants.