Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 27, 2018
Patent Application Number
14104300
Date Filed
December 12, 2013
Patent Citations Received
...
Patent Primary Examiner
Patent abstract
A method for making a hydrogel, photochromic contact lens including supplying a first lens composition comprising a contact lens monomer and a photochromic material to a front contact lens mold and supplying a second lens composition to said contact lens mold wherein the viscosity of said first composition is at least about 1000 cp greater than the viscosity of said second contact lens composition, and the makeup of said second composition matches the of said first composition to reduce strain between said compositions of the resulting lens.
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