Patent · US Expired

High refractive index photochromic ophthalmic article

US5708064A · kind A · utility

22Cited by
12References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 13, 1994
Grant dateJan 13, 1998
Priority date—
Expiry dateOct 13, 2014

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02B1/041
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Organic ophthalmic articles are photochromic and have high indices of refraction.

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