Patents by Inventor Sieghard Lehwald

Sieghard Lehwald 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).

  • Beam guidance for electron beam tests, and electron impact spectrometer having such beam guidance
    Patent number: 4300045
    Abstract: A beam guidance for electron beam tests, especially of solid bodies. The ctrons cathodically emitted and electron-optically bundled are subjected at least to an energy selection in a cylinder condenser deflection unit and are subsequently detected or indicated in a detector. The emission and bundling systems are arranged in such a way that the electrons, in the plane at right angles to the cylinder condenser axis, are focused upon the inlet shield or baffle of the condenser, yet are focused at right angles thereto upon the detector.
    Type: Grant
    Filed: December 27, 1979
    Date of Patent: November 10, 1981
    Assignee: Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftung
    Inventors: Harald Ibach, Hermann Froitzheim, Heinz-Dieter Bruchmann, Sieghard Lehwald