Measuring and testing – Instrument proving or calibrating – Liquid level or volume measuring apparatus
Reexamination Certificate
2004-02-23
2009-10-27
Raevis, Robert R (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Liquid level or volume measuring apparatus
Reexamination Certificate
active
07607336
ABSTRACT:
In a method for ascertaining the control voltage of a piezoelectric element, the voltage drop at the piezoelectric element following a charge process is measured and the control voltage of the piezoelectric element is inferred from this voltage drop.
REFERENCES:
patent: 6133714 (2000-10-01), Freudenberg et al.
patent: 2002/0041475 (2002-04-01), Gangi et al.
patent: 199 30 309 (2001-01-01), None
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patent: 1 138 909 (2001-10-01), None
Rau Andreas
Sutter Kai
Kenyon & Kenyon LLP
Raevis Robert R
Robert & Bosch GmbH
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