Patent · US Active

Method for producing ophthalmic lenses

US9919456B2 · kind B2 · utility

0Cited by

104References

15Claims

0Family size

Assignee

Novartis AG · CH

Inventors

Horngyih Huang · Penfield, US
Honghui Lu · Johns Creek, US

Key dates

Filing date	Oct 30, 2014
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Jul 17, 2036

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2011/0041
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention provides a method for producing ophthalmic lenses, preferably contact lenses, more preferably silicone hydrogel contact lenses. This method involves applying a coat of catanionic vesicles onto the molding surfaces of a mold. By having a coat of catanionic vesicles on the molding surfaces of a mold, mold separation force and lens defects generated during mold opening and de-molding process can be substantially reduced.

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