Patents by Inventor Christof W. Burckhardt

Christof W. Burckhardt 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).

  • Apparatus for measurement of an eye's response to visual flicker
    Patent number: 5237349
    Abstract: A device for measuring the response of the eye to the flashing of a luminous source comprises a housing (11) containing a source of electrical energy (16), a light-emitting diode (14), an optical system (15) for focusing the light emitted by the source on the retina of the eye and an electronic control device (17). This device is arranged to generate numerical sinusoidal signal with modulation delta, which simplifies the circuit and ensures that the measurements are sufficiently stable.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: August 17, 1993
    Assignee: Ciposa Microtechniques S.A.
    Inventor: Christof W. Burckhardt
  • Device for measuring force
    Patent number: 4552028
    Abstract: A device for measuring force comprising, on the one hand, an upper rigid element (1) and a lower rigid element (2) linked by an elastic body (8), and on the other hand a capacitive sensor independent of the elastic body. The elastic body is made out of a single piece of material by machining a hollow cylinder. The capacitive sensor comprises a plurality of flat electrodes (6, 7) laid out so that different combinations of electrodes enable all 6 degrees of freedom to be measured.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: November 12, 1985
    Inventors: Christof W. Burckhardt, Philipp Stauber, Gerard Piller