Patent · US Expired

Collagen soft contact lens

US4223984A · kind A · utility

41Cited by
6References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 4, 1979
Grant dateSep 23, 1980
Priority date—
Expiry dateApr 4, 1999

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S128/08
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Soft contact lenses are made from solubilized, defatted, transparent, cross-linked collagen, and/or chemically-modified collagen.

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