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:
Apr. 04, 2017
Filed:
Sep. 23, 2013
Ciba Vision Corporation, Duluth, GA (US);
Paul Clement Nicolson, Dunwoody, GA (US);
Richard Carlton Baron, Alpharetta, GA (US);
Peter Chabrecek, Riehen, CH;
John Court, Ultimo, AU;
Angelika Domschke, Duluth, GA (US);
Hans Jorge Griesser, The Patch, AU;
Arthur Ho, Randwick, AU;
Jens Hopken, Lorrach, DE;
Bronwyn Glenice Laycock, Heidelberg Heights, AU;
Qin Liu, Corvallis, OR (US);
Dieter Lohmann, Munchenstein, CH;
Gordon Francis Meijs, Carnegie, AU;
Eric Papaspiliotopoulos, Paddington, AU;
Judy Smith Riffle, Blacksburg, VA (US);
Klaus Schindhelm, Cherrybrook, AU;
Deborah Sweeney, Roseville, AU;
Wilson Leonard Terry, Jr., Gainesville, FL (US);
Jurgen Vogt, Duluth, GA (US);
Lynn Cook Winterton, Alpharetta, GA (US);
Novartis AG, Basel, CH;
Abstract
A method for making a silicone hydrogel contact lens is provided. In one embodiment, a prepolymer mixture is polymerized in a lens mold in an atmosphere having less than about 10000 ppm oxygen to form a silicone hydrogel contact lens suitable for extended wear as characterized by producing less than 10% corneal swelling after a period of continuous wear of 7 days including normal sleep periods. In one embodiment, the prepolymer mixture comprises at least one oxyperm material containing hydrophilic groups, wherein the at least one oxyperm material is a siloxane-containing macromer or monomer, at least one ionperm material, and a cross-linking agent. In certain embodiments, the polymerization of the prepolymer mixture may be carried out in an atmosphere having less than about 1000 ppm oxygen.