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US 7,833,443 B2Granted
Molds for producing contact lenses
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsChanghong Yin, Scott F Ansell
Life of this patent
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Abstract
This invention describes molds made from alicyclic co-polymers that are useful in the production of contact lenses and methods for their use.
Claims7
A method for making a coated lenses comprising
- (1) coating at least one lens forming surface of a lens mold with a coating effective amount of a high molecular weight coating composition
- wherein said lens mold comprises an alicyclic co-polymer, polypropylene having a melt flow of less than about 21 g/10 min, and at least one lens forming surface
- wherein said alicyclic co-polymer comprises at least two alicyclic monomers of different chemical structures;
- (2) dispensing an uncured lens formulation onto said at least one lens forming surface;
- and
- (3) curing said lens formulation and said coating composition using a dwell time of less than about 5 minutes and under conditions suitable to form a coated lens.
3 more elements
Dependencies are inferred from the claim text.