Patents by Inventor Sven-Gunnar Olson

Sven-Gunnar Olson 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).

  • Spectrophotometric method and spectrophotometer for performing the method
    Patent number: 5387979
    Abstract: In a spectrophotometer for measuring the concentration of a specific substance, a pulsating (modulated) source of radiation gives rise to an alternating current component, a direct current component and a dark signal component in a measurement signal. The response time for changes in the concentration of the specific substance is reduced while the measurement signal's signal-to-noise ratio is simultaneously improved when the pulsation frequency is from 50 to 1000 Hz, and the direct current component in the measurement signal is filtered out for normalization by a reference signal in a signal analyzer so the concentration of the specific substance can be calculated.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: February 7, 1995
    Assignee: Siemens-Elema AB
    Inventors: Stefan Brauer, Rolf Castor, Anders Linge, Sven-Gunnar Olson