Patents by Inventor Robert Kellner, deceased

Robert Kellner, deceased 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).

  • Method for infrared-optical determination of the concentration of at least one chemical analyte in a liquid sample
    Patent number: 5922609
    Abstract: In a method for infrared-optical determination of the concentration of at least one chemical analyte in a liquid sample, where the liquid sample is passed through a measuring cell and irradiated with infrared radiation of a single narrow waverange and infrared absorption is measured, the analyte being determined is subject to a chemical reaction before measurement, which should leave the other components of the liquid sample unaffected, and the change in infrared absorption caused by the chemical reaction with the analyte is measured as a unique function of the analyte concentration to be determined.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: July 13, 1999
    Assignee: Anton Paar GmbH
    Inventors: Robert Kellner, deceased, Max Lippitsch