Patent · US Active

Method for making UV-absorbing ophthalmic lenses

US9052439B2 · kind B2 · utility

18Cited by

72References

11Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Newton T. Samuel · Suwanee, US
John Dallas Pruitt · Suwanee, US
Daqing Wu · Suwanee, US
Selma Kuyu · Duluth, US

Key dates

Filing date	Jul 20, 2011
Grant date	Jun 9, 2015
Priority date	—
Expiry date	Mar 7, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/049
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Described herein is a cost-effective and time-efficient method for making UV-absorbing contact lenses. In contrast to the conventional method for making UV-absorbing contact lenses which involves copolymerizing a lens forming composition including a UV-absorbing vinylic monomer, a method of the invention involves covalent attachment of a UV-absorbing compound having a second reactive functional group to a preformed contact lens having a first reactive functional group therein and/or thereon.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.