Rigid gas permeable lens material

Details Rigid gas permeable lens material Rigid gas permeable lens material

2005-06-06

2008-03-18

Harlan, Robert D. (Department: 1796)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Implant or insert

C525S474000, C525S523000

Reexamination Certificate

active

07344731

ABSTRACT:
A copolymer useful as a rigid gas permeable contact lens material is the polymerization product of a monomeric mixture comprising a polysiloxane-containing urethane or urea prepolymer endcapped with polymerizable ethylenically unsaturated radicals.

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