Patent · US Active

Method for making UV-absorbing ophthalmic lenses

US9005700B2 · kind B2 · utility

23Cited by

437References

20Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Harald Bothe · Niedernhausen, DE
Yongxing Qiu · Duluth, US
Peter Hagmann · Erlenbach a.Main, DE

Key dates

Filing date	Oct 10, 2012
Grant date	Apr 14, 2015
Priority date	—
Expiry date	Oct 20, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02B1/043
WIPO fieldOther special machines
WIPO sectorMechanical engineering

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 dipping a contact lens in a solution of UV-absorbing polymer comprising carboxyl-containing monomeric units and UV-absorbing monomeric units to form a UV-absorbing coating on the contact lens.

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