Patents by Inventor Guillaume L. M. Cals

Guillaume L. M. Cals 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).

  • Pacemaker output circuit
    Patent number: 4343312
    Abstract: A physiological stimulating system includes improved means for minimizing the polarization that results at the stimulus site, thereby enabling enhanced detection of evoked responses. In the pacemaker embodiment, the stimulus signal comprises positive recharge pulses immediately before and immediately after the negative stimulus signal, the recharge pulses being adapted in a time duration and amplitude such that the total current delivered to the stimulus site, (e.g., a patient's heart) by the stimulus signal is substantially zero.
    Type: Grant
    Filed: February 5, 1981
    Date of Patent: August 10, 1982
    Assignee: Vitafin N.V.
    Inventors: Guillaume L. M. Cals, Frederik H. M. Wittkampf, Kornelis A. Mensink, Hendrik L. Brouwer