Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Reexamination Certificate
2011-03-08
2011-03-08
Berman, Susan W (Department: 1765)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
C351S16000R, C351S16000R, C523S106000, C523S107000, C523S108000, C528S025000, C528S026000, C522S099000, C522S148000, C522S167000
Reexamination Certificate
active
07901073
ABSTRACT:
A synthetic route to polymers comprised of at least two monomers each with a very different reactivity ratio by using a corresponding crosslink agent for each monomer. Novel crosslink agents are described that provide for the copolymerization of at least one hydrophilic monomer with at least one lens monomer typically used to prepare materials for ophthalmic lenses. The new crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer.
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McGee Joseph A.
Nunez Ivan M.
Seelye David E.
Barrera Joseph
Bausch & Lomb Incorporated
Berman Susan W
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