Patents by Inventor Paul Huygen

Paul Huygen 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).

  • Method and apparatus for determining when a partially or completely collapsed lung has been opened
    Patent number: 6116241
    Abstract: A method and an apparatus for determining when a partially or completely collapsed lung has been opened are based on the fact that in the course of opening an alveolus by supplying a gas pressure, the alveolus will generate a crackle sound. By listening to the crackle sounds via microphones, an apparatus can determine when the lung is completely open. The apparatus has a filter for filtering out the relevant frequencies for the crackle sounds and a determination unit for identifying the crackles and for determining when the lung is open based on the filtered out sounds.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: September 12, 2000
    Assignee: Siemens-Elema AB
    Inventors: Paul Huygen, Stephan Bohm, Burkhard Lachmann