Patents by Inventor Stu Koch

Stu Koch 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).

  • Capacitive sensing isolation using reversed biased diodes
    Patent number: 7521940
    Abstract: A capacitive sensor is provided. The capacitive sensor includes a sensor/heat pad for outputting a sensing signal, a first diode coupled to a first node of the sensor/heat pad, a second diode coupled to a second node of the sensor/heat pad, a first transistor coupled to the first diode and a second transistor coupled to the second diode. During a sensing mode, the first and second transistors are opened and a reverse-biased signal is applied to the first diode and the second diode so that the sensor/heat pad is isolated from the first and second transistors.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: April 21, 2009
    Assignee: TK Holdings Inc.
    Inventors: Stu Koch, Phil Maguire
  • Capacitive sensing isolation using reversed biased diodes
    Publication number: 20070208529
    Abstract: A capacitive sensor is provided. The capacitive sensor includes a sensor/heat pad for outputting a sensing signal, a first diode coupled to a first node of the sensor/heat pad, a second diode coupled to a second node of the sensor/heat pad, a first transistor coupled to the first diode and a second transistor coupled to the second diode. During a sensing mode, the first and second transistors are opened and a reverse-biased signal is applied to the first diode and the second diode so that the sensor/heat pad is isolated from the first and second transistors.
    Type: Application
    Filed: January 26, 2007
    Publication date: September 6, 2007
    Inventors: Stu Koch, Phil Maguire