Patent · US Active

Production of ophthalmic devices based on photo-induced step growth polymerization

US8357771B2 · kind B2 · utility

17Cited by

127References

10Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Arturo Norberto Medina · Suwanee, US
Robert Scott · Alpharetta, US
Dawn A. Smith · Rotorua, NZ

Key dates

Filing date	Jul 14, 2011
Grant date	Jan 22, 2013
Priority date	—
Expiry date	Jul 14, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG02B1/043
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention provide a new lens curing method for making hydrogel contact lenses. The new lens curing method is based on actinically-induced step-growth polymerization. The invention also provides hydrogel contact lenses prepared from the method of the invention and fluid compositions for making hydrogel contact lenses based on the new lens curing method. In addition, the invention provide prepolymers capable of undergoing actinically-induced step-growth polymerization to form hydrogel contact lenses.

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