US Patent Issued to HELLA on Jan. 27 for "Method for determining the state of a piezoelectric element and sensor apparatus with a piezoelectric element" (German Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,366, issued on Jan. 27, was assigned to HELLA GMBH & Co. KGAA (Lippstadt, Germany).

"Method for determining the state of a piezoelectric element and sensor apparatus with a piezoelectric element" was invented by Hauke Baumgartel (Ganderkesee, Germany) and Carsten Horst (Worpswede, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for determining the state of a piezoelectric element, in particular the piezoelectric element of a sensor apparatus, it is provided. The piezoelectric element is a component of a resonant circuit. The resonant circuit is excited to natural vibrations. The period durations of the natural vibrations of the reson...