Patents by Inventor Malchow Volker

Malchow Volker has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5971542
    Abstract: A multifocal contact lens has a substantially spherical lens body that has a substantially convex outer surface, a substantially concave inner surface, and an optical central point, with a horizontal and a vertical axis that intersect in the optical central point. These axes are horizontal and vertical in the sense that the lens being worn on a human eye is in a usually upright position. The lens has a centrally arranged optical zone, a lens outer region, and an rim region, and at least two thickened regions arranged on the outer lens region, between the optical zone and the rim region and laterally of the vertical mid-axis, for setting a given orientation of the contact lens relative to the human eye. A prescribed near vision value, at least in a lower visual region, and a prescribed far vision value in an upper visual region are distributed on the surface of the lens body.
    Type: Grant
    Filed: April 3, 1998
    Date of Patent: October 26, 1999
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Malchow Volker, Eckhard Rothe, Klaus Grimmenstein