Patents Assigned to Merck Patent Gesellesschaft
  • Method for the determination of refractive indices and optical instrument therefor
    Patent number: 6317201
    Abstract: The present invention relates to a method for the determination of refractive indices, ranging over a wide range of values. It also relates to a method for the determination of the birefringence of liquid crystals. Further, it relates to optical instruments used for such determinations.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: November 13, 2001
    Assignee: Merck Patent Gesellesschaft
    Inventor: Michael Heckmeier