Patents by Inventor Josephine Arendt

Josephine Arendt 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 for controlling the alertness of a human subject and a light source for use in this method
    Patent number: 8028706
    Abstract: The invention relates to a method for controlling the alertness of a human subject and a light source for use in this method and use of a light source for this method. The method comprises exposure of a human subject during an exposure period to suitable light radiation without substantially influencing the phase of a melatonin cycle. Melatonin is a sleep-hormone that can be used to control the alertness of a human subject. The suitable light radiation being specified by an output fraction of melatonin suppressive radiation (Melatonin Watt/Watt) and light output (lumen/Watt), the output fraction and light output being adjusted to obtain the desired effect on the phase of said cycle.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: October 4, 2011
    Assignee: Koninklijke Philips Electronics N. V.
    Inventors: Debra J. Skene, Josephine Arendt, Kavita Thapan, Gerrit Jan Van Den Beld, Petrus Johannes Mathijs Van Der Burgt
  • Method for controlling the alertness of a human subject and a light source for use in this method
    Publication number: 20030069616
    Abstract: The invention relates to a method for controlling the alertness of a human subject and a light source for use in this method and use of a light source for this method. The method comprises exposure of a human subject during an exposure period to suitable light radiation without substantially influencing the phase of a melatonin cycle. Melatonin is a sleep-hormone that can be used to control the alertness of a human subject. The suitable light radiation being specified by an output fraction of melatonin suppressive radiation (Melatonin Watt/Watt) and light output (lumen/Watt), the output fraction and light output being adjusted to obtain the desired effect on the phase of said cycle.
    Type: Application
    Filed: September 16, 2002
    Publication date: April 10, 2003
    Inventors: Debra J. Skene, Josephine Arendt, Kavita Thapan, Gerrit Jan Van Den Beld, Petrus Johannes Mathijs Van Der Burgt