ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,481,172, issued on Nov. 25, was assigned to COOPERVISION INTERNATIONAL Ltd. (Fareham, Great Britain).
"Contact lens membrane and related methods" was invented by Ian Bruce (Southampton, Great Britain) and Robert Oag (Southampton, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a membrane (140) suitable for forming at least part of a contact lens (500) by bonding to a bulk lens portion (540). The membrane has a central axis (168). The membrane comprises: a first face (142); a second face (144); and a peripheral edge (160). In a cross-sectional plane passing through and parallel to the central axis of the mem...