Patents by Inventor Hans Schollermann

Hans Schollermann 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).

  • Detection of parasitic signals during pulsoxymetric measurement
    Patent number: 6181959
    Abstract: In the proposed method for detecting spurious signals caused by movements of the patient or his environment in the pulse oximetric measurement of the arterial oxygen saturation, the intensity of the light emerging from the test specimen is measured by two photodiodes (7, 8). The signals (S1, S2) generated at these photodiodes (7, 8) are normalized to equal levels of their DC components. Finally, to detect spurious signals caused by movements, the differences (&Dgr;Sn) of these normalized signals (S1n, S2n) are formed.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: January 30, 2001
    Assignee: Kontron Instruments AG
    Inventors: Hans Schöllermann, Patrick Eberhard
  • Method of non-invasive determination of oxygen saturation in tissue in which blood is circulating
    Patent number: 6151107
    Abstract: In a method for the non-invasive determination of the oxygen saturation in tissue supplied with blood, the tissue is irradiated with red and infrared light and the DC and AC components of the emerging light are measured. During a first time interval, a calibration factor k is determined from the DC and AC components of the emerging light. During a second time interval, the oxygen saturation in the tissue is computed progressively from the DC components of the emerging light and the determined calibration factor k.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: November 21, 2000
    Assignee: Linde Medical Sensors AG
    Inventors: Hans Schollermann, Patrick Eberhard