Patents Assigned to N.G. Trustees & Nominees, Ltd.
  • Patent number: 4704016
    Abstract: A bifocal contact lens is described wherein at least the major viewing area is divided into a multiplicity of near and distant vision viewing zones, each near vision zone being adjacent to a distant vision zone or middle distance zone and there being at least 3 viewing zones in all, whereby the wearer is able to look through at least 2 zones of different power simultaneously. Normally the lens has at least 2 of each kind of viewing zone and the total surface area of the distant vision zones is substantially equal to the total surface area of the near vision zones.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: November 3, 1987
    Assignee: N.G. Trustees & Nominees, Ltd.
    Inventor: John T. de Carle