Patent · US Expired

Multifocal contact lens with aspheric surface

US6808262B2 · kind B2 · utility

363Cited by

183References

18Claims

0Family size

Assignee

Novartis AG · CH

Inventors

L. Lawrence Chapoy · Barrington, US
William Rovani · Mount Prospect, US
John B. W. Lett · San Diego, US

Key dates

Filing date	Jun 14, 2001
Grant date	Oct 26, 2004
Priority date	—
Expiry date	Oct 12, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/048
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A contact lens is disclosed having a front surface and a back surface. The lens contains a continuously varying aspheric surface on one or more of these surfaces.

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