Patents by Inventor Stephan Drost

Stephan Drost 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).

  • Sensors for selectively determining liquid-phase or gas-phase components using a heteropolysiloxane sensitive layer
    Patent number: 4878015
    Abstract: A description is given of sensors in in the form of field effect transistors and capacitors which are suitable for qualitatively and quantitatively determining species to be analyzed, for example molecules or ions, in liquid or gaseous media. A special field of application is the selective determination of the presence and concentration of gases. The sensors are defined in that they have a sensitive layer consisting of a heteropolysiloxane.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: October 31, 1989
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Helmut Schmidt, Frank Hutter, Karl-Heinz Haas, Ernst Obermeier, Ulrich Steger, Hanns-Erik Endres, Stephan Drost