Silicone hydrogel contact lenses

US9217813B2 · kind B2 · utility

Assignee

• COOPERVISION INTERNATIONAL LIMITED · GB

Inventors

• Yuwen Liu · Dublin, US
• Junhao Ge · Johns Creek, US
• Charlie Chen · San Ramon, US
• Yuan Xu · Fremont, US
• Li Yao · Corning, US
• Arthur Back · Danville, US
• Charles A. Francis · Union City, US

Key dates

• Filing date: Feb 23, 2012
• Grant date: Dec 22, 2015
• Expiry date: Oct 9, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C7/04
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Silicone hydrogel contact lenses are formed from the reaction product of a polymerizable composition comprising at least one acrylate-containing siloxane monomer, at least one hydrophilic vinyl-containing monomer, and at least one vinyl-containing cross-linking agent. The contact lenses have ophthalmically-acceptable ionoflux values and surface wettability, and can be manufactured without the use of volatile organic solvents.