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:
Sep. 30, 2014
Filed:
Mar. 10, 2009
Alice Weimin Liu, Alpharetta, GA (US);
Lance Kyle Lipscomb, Cumming, GA (US);
Michael Schaub, Cumming, GA (US);
Dawn A. Smith, Duluth, GA (US);
Alice Weimin Liu, Alpharetta, GA (US);
Lance Kyle Lipscomb, Cumming, GA (US);
Michael Schaub, Cumming, GA (US);
Dawn A. Smith, Duluth, GA (US);
Novartis AG, Basel, CH;
Abstract
The invention provide a method for cast-molding hydrogel contact lenses, especially silicone hydrogel contact lenses by using plastic molds of a poly(cycloalkylene-dialkylene terephthalate) copolymer. These plastic molds do not need to be degassed and stored in an oxygen-free atmosphere (e.g., Nor Ar) before being used for cast-molding silicone hydrogel contact lenses in the absence of oxygen and resultant silicone hydrogel lenses can still have relatively high ion permeability and relatively low variation in targeted optical power, compared with silicone hydrogel lenses made from a conventional mold material, such as polypropylene. The invention also provides plastic molds for cast-molding silicone hydrogel contact lenses.