Patents by Inventor Christer Elkwall

Christer Elkwall 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 tissue stimulation
    Patent number: 5165405
    Abstract: In the stimulation of living tissue the reaction thereof is usually superimposed with polarization phenomena to such a degree that the reaction cannot be recognized in the electrical signal. To avoid this problem, a curve of the measured tissue potential is intermediately stored in a first memory after each stimulation, and the intermediately stored curve is then always used for updating the current signal curve. The current signal curve is stored in a second memory whenever an absence of a tissue reaction to the stimulation occurs.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: November 24, 1992
    Assignee: Siemens Aktiengesellschaft
    Inventor: Christer Elkwall