Patents by Inventor Joseph Topping

Joseph Topping 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).

  • Electrode assembly test unit and method
    Patent number: 5268632
    Abstract: A test unit for a monitoring device includes reference and measuring electrodes coupled to a preamplifier and a temperature compensating resistor for the preamplifier. The test unit has components corresponding to those of the monitoring device as well as a power supply and a voltmeter coupled to the output of its preamplifier. Cables are provided for substituting either or both electrodes of the monitoring device for the electrodes of the test device, and a switch is provided for substituting a temperature compensation resistor of the monitoring device for the temperature compensation resistor of the test device. A cable is adapted for connection to either preamplifier for supplying it with operating potentials derived from the power supply and for coupling the output of either preamplifier to the voltmeter.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: December 7, 1993
    Assignee: Henkel Corporation
    Inventor: Joseph Topping