Patents by Inventor Gregory N. Miller

Gregory N. Miller 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: 4938583
    Abstract: A bifocal contact lens is made by cutting a first convex surface on the anterior surface of the lens, the first convex surface being a near distance corrective surface and the posterior surface being shaped to the eye, so that substantially the entirety of the anterior surface is formed by the first corrective surface. A second corrective surface is cut after the lens is eccentrically offset from the axis of rotation of the first surface, the second surface being of greater radius then that of the first surface and the two corrective surfaces forming substantially the entirety of the anterior surface of the lens with the lens being devoid of ballasting other than that provided by the eccentric thinning of the lens.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: July 3, 1990
    Inventor: Gregory N. Miller