Patents Assigned to Robert D. Herpst
  • Method and apparatus for the production of films
    Patent number: 6146900
    Abstract: Methods and apparatus for forming a film of a liquid material and for employing the film as a test sample for determining properties of the material in a suitable analytical instrument such as a spectrophotometer.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: November 14, 2000
    Assignee: Robert D. Herpst
    Inventors: Robert D. Herpst, Kenneth B. Cuthbert